Port of Simon Tatham's Puzzle Collection

Original revision: 5123b1bf68777ffa86e651f178046b26a87cf2d9

MIT Licensed. Some games still crash and others are unplayable due to
issues with controls. Still need a "real" polygon filling algorithm.

Currently builds one plugin per puzzle (about 40 in total, around 100K
each on ARM), but can easily be made to build a single monolithic
overlay (800K or so on ARM).

The following games are at least partially broken for various reasons,
and have been disabled on this commit:

Cube:     failed assertion with "Icosahedron" setting
Keen:     input issues
Mines:    weird stuff happens on target
Palisade: input issues
Solo:     input issues, occasional crash on target
Towers:   input issues
Undead:   input issues
Unequal:  input and drawing issues (concave polys)
Untangle: input issues

Features left to do:
 - In-game help system
 - Figure out the weird bugs

Change-Id: I7c69b6860ab115f973c8d76799502e9bb3d52368

1 files changed, 3760 insertions, 0 deletions

diff --git a/apps/plugins/puzzles/windows.c b/apps/plugins/puzzles/windows.c
new file mode 100644
index 0000000000..492e37ceac
--- /dev/null
+++ b/apps/plugins/puzzles/windows.c
@@ -0,0 +1,3760 @@
+/*
+ * windows.c: Windows front end for my puzzle collection.
+ */
+
+#include <windows.h>
+#include <commctrl.h>
+#ifndef NO_HTMLHELP
+#include <htmlhelp.h>
+#endif /* NO_HTMLHELP */
+
+#ifdef _WIN32_WCE
+#include <commdlg.h>
+#include <aygshell.h>
+#endif
+
+#include <stdio.h>
+#include "rbassert.h"
+#include <ctype.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <time.h>
+
+#include "puzzles.h"
+
+#ifdef _WIN32_WCE
+#include "resource.h"
+#endif
+
+#define IDM_NEW       0x0010
+#define IDM_RESTART   0x0020
+#define IDM_UNDO      0x0030
+#define IDM_REDO      0x0040
+#define IDM_COPY      0x0050
+#define IDM_SOLVE     0x0060
+#define IDM_QUIT      0x0070
+#define IDM_CONFIG    0x0080
+#define IDM_DESC      0x0090
+#define IDM_SEED      0x00A0
+#define IDM_HELPC     0x00B0
+#define IDM_GAMEHELP  0x00C0
+#define IDM_ABOUT     0x00D0
+#define IDM_SAVE      0x00E0
+#define IDM_LOAD      0x00F0
+#define IDM_PRINT     0x0100
+#define IDM_PRESETS   0x0110
+#define IDM_GAMES     0x0300
+
+#define IDM_KEYEMUL   0x0400
+
+#define HELP_FILE_NAME  "puzzles.hlp"
+#define HELP_CNT_NAME   "puzzles.cnt"
+#ifndef NO_HTMLHELP
+#define CHM_FILE_NAME   "puzzles.chm"
+#endif /* NO_HTMLHELP */
+
+#ifndef NO_HTMLHELP
+typedef HWND (CALLBACK *htmlhelp_t)(HWND, LPCSTR, UINT, DWORD);
+static htmlhelp_t htmlhelp;
+static HINSTANCE hh_dll;
+#endif /* NO_HTMLHELP */
+enum { NONE, HLP, CHM } help_type;
+char *help_path;
+int help_has_contents;
+
+#ifndef FILENAME_MAX
+#define FILENAME_MAX    (260)
+#endif
+
+#ifndef HGDI_ERROR
+#define HGDI_ERROR ((HANDLE)GDI_ERROR)
+#endif
+
+#ifdef COMBINED
+#define CLASSNAME "Puzzles"
+#else
+#define CLASSNAME thegame.name
+#endif
+
+#ifdef _WIN32_WCE
+
+/*
+ * Wrapper implementations of functions not supplied by the
+ * PocketPC API.
+ */
+
+#define SHGetSubMenu(hWndMB,ID_MENU) (HMENU)SendMessage((hWndMB), SHCMBM_GETSUBMENU, (WPARAM)0, (LPARAM)ID_MENU)
+
+#undef MessageBox
+
+int MessageBox(HWND hWnd, LPCSTR lpText, LPCSTR lpCaption, UINT uType)
+{
+    TCHAR wText[2048];
+    TCHAR wCaption[2048];
+
+    MultiByteToWideChar (CP_ACP, 0, lpText,    -1, wText,    2048);
+    MultiByteToWideChar (CP_ACP, 0, lpCaption, -1, wCaption, 2048);
+
+    return MessageBoxW (hWnd, wText, wCaption, uType);
+}
+
+BOOL SetDlgItemTextA(HWND hDlg, int nIDDlgItem, LPCSTR lpString)
+{
+    TCHAR wText[256];
+
+    MultiByteToWideChar (CP_ACP, 0, lpString, -1, wText, 256);
+    return SetDlgItemTextW(hDlg, nIDDlgItem, wText);
+}
+
+LPCSTR getenv(LPCSTR buf)
+{
+    return NULL;
+}
+
+BOOL GetKeyboardState(PBYTE pb)
+{
+  return FALSE;
+}
+
+static TCHAR wClassName[256], wGameName[256];
+
+#endif
+
+#ifdef DEBUGGING
+static FILE *debug_fp = NULL;
+static HANDLE debug_hdl = INVALID_HANDLE_VALUE;
+static int debug_got_console = 0;
+
+void dputs(char *buf)
+{
+    /*DWORD dw;
+
+    if (!debug_got_console) {
+        if (AllocConsole()) {
+            debug_got_console = 1;
+            debug_hdl = GetStdHandle(STD_OUTPUT_HANDLE);
+        }
+    }
+    if (!debug_fp) {
+        debug_fp = fopen("debug.log", "w");
+    }
+
+    if (debug_hdl != INVALID_HANDLE_VALUE) {
+        WriteFile(debug_hdl, buf, strlen(buf), &dw, NULL);
+    }
+    if (debug_fp) {
+      fputs(buf, debug_fp);
+      fflush(debug_fp);
+    }*/
+    OutputDebugString(buf);
+}
+
+void debug_printf(char *fmt, ...)
+{
+    char buf[4096];
+    va_list ap;
+    static int debugging = -1;
+
+    if (debugging == -1)
+        debugging = getenv("DEBUG_PUZZLES") ? 1 : 0;
+
+    if (debugging) {
+        va_start(ap, fmt);
+        _vsnprintf(buf, 4095, fmt, ap);
+        dputs(buf);
+        va_end(ap);
+    }
+}
+#endif
+
+#ifndef _WIN32_WCE
+#define WINFLAGS (WS_OVERLAPPEDWINDOW &~ \
+                      (WS_MAXIMIZEBOX | WS_OVERLAPPED))
+#else
+#define WINFLAGS (WS_CAPTION | WS_SYSMENU)
+#endif
+
+static void new_game_size(frontend *fe, float scale);
+
+struct font {
+    HFONT font;
+    int type;
+    int size;
+};
+
+struct cfg_aux {
+    int ctlid;
+};
+
+struct blitter {
+    HBITMAP bitmap;
+    frontend *fe;
+    int x, y, w, h;
+};
+
+enum { CFG_PRINT = CFG_FRONTEND_SPECIFIC };
+
+struct frontend {
+    const game *game;
+    midend *me;
+    HWND hwnd, statusbar, cfgbox;
+#ifdef _WIN32_WCE
+    HWND numpad;  /* window handle for the numeric pad */
+#endif
+    HINSTANCE inst;
+    HBITMAP bitmap, prevbm;
+    RECT bitmapPosition;  /* game bitmap position within game window */
+    HDC hdc;
+    COLORREF *colours;
+    HBRUSH *brushes;
+    HPEN *pens;
+    HRGN clip;
+    HMENU gamemenu, typemenu;
+    UINT timer;
+    DWORD timer_last_tickcount;
+    int npresets;
+    game_params **presets;
+    struct font *fonts;
+    int nfonts, fontsize;
+    config_item *cfg;
+    struct cfg_aux *cfgaux;
+    int cfg_which, dlg_done;
+    HFONT cfgfont;
+    HBRUSH oldbr;
+    HPEN oldpen;
+    int help_running;
+    enum { DRAWING, PRINTING, NOTHING } drawstatus;
+    DOCINFO di;
+    int printcount, printw, printh, printsolns, printcurr, printcolour;
+    float printscale;
+    int printoffsetx, printoffsety;
+    float printpixelscale;
+    int fontstart;
+    int linewidth, linedotted;
+    drawing *dr;
+    int xmin, ymin;
+    float puzz_scale;
+};
+
+void frontend_free(frontend *fe)
+{
+    midend_free(fe->me);
+
+    sfree(fe->colours);
+    sfree(fe->brushes);
+    sfree(fe->pens);
+    sfree(fe->presets);
+    sfree(fe->fonts);
+
+    sfree(fe);
+}
+
+static void update_type_menu_tick(frontend *fe);
+static void update_copy_menu_greying(frontend *fe);
+
+void fatal(char *fmt, ...)
+{
+    char buf[2048];
+    va_list ap;
+
+    va_start(ap, fmt);
+    vsprintf(buf, fmt, ap);
+    va_end(ap);
+
+    MessageBox(NULL, buf, "Fatal error", MB_ICONEXCLAMATION | MB_OK);
+
+    exit(1);
+}
+
+char *geterrstr(void)
+{
+    LPVOID lpMsgBuf;
+    DWORD dw = GetLastError();
+    char *ret;
+
+    FormatMessage(
+        FORMAT_MESSAGE_ALLOCATE_BUFFER | 
+        FORMAT_MESSAGE_FROM_SYSTEM,
+        NULL,
+        dw,
+        MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+        (LPTSTR) &lpMsgBuf,
+        0, NULL );
+
+    ret = dupstr(lpMsgBuf);
+
+    LocalFree(lpMsgBuf);
+
+    return ret;
+}
+
+void get_random_seed(void **randseed, int *randseedsize)
+{
+    SYSTEMTIME *st = snew(SYSTEMTIME);
+
+    GetLocalTime(st);
+
+    *randseed = (void *)st;
+    *randseedsize = sizeof(SYSTEMTIME);
+}
+
+static void win_status_bar(void *handle, char *text)
+{
+#ifdef _WIN32_WCE
+    TCHAR wText[255];
+#endif
+    frontend *fe = (frontend *)handle;
+
+#ifdef _WIN32_WCE
+    MultiByteToWideChar (CP_ACP, 0, text, -1, wText, 255);
+    SendMessage(fe->statusbar, SB_SETTEXT,
+                (WPARAM) 255 | SBT_NOBORDERS,
+                (LPARAM) wText);
+#else
+    SetWindowText(fe->statusbar, text);
+#endif
+}
+
+static blitter *win_blitter_new(void *handle, int w, int h)
+{
+    blitter *bl = snew(blitter);
+
+    memset(bl, 0, sizeof(blitter));
+    bl->w = w;
+    bl->h = h;
+    bl->bitmap = 0;
+
+    return bl;
+}
+
+static void win_blitter_free(void *handle, blitter *bl)
+{
+    if (bl->bitmap) DeleteObject(bl->bitmap);
+    sfree(bl);
+}
+
+static void blitter_mkbitmap(frontend *fe, blitter *bl)
+{
+    HDC hdc = GetDC(fe->hwnd);
+    bl->bitmap = CreateCompatibleBitmap(hdc, bl->w, bl->h);
+    ReleaseDC(fe->hwnd, hdc);
+}
+
+/* BitBlt(dstDC, dstX, dstY, dstW, dstH, srcDC, srcX, srcY, dType) */
+
+static void win_blitter_save(void *handle, blitter *bl, int x, int y)
+{
+    frontend *fe = (frontend *)handle;
+    HDC hdc_win, hdc_blit;
+    HBITMAP prev_blit;
+
+    assert(fe->drawstatus == DRAWING);
+
+    if (!bl->bitmap) blitter_mkbitmap(fe, bl);
+
+    bl->x = x; bl->y = y;
+
+    hdc_win = GetDC(fe->hwnd);
+    hdc_blit = CreateCompatibleDC(hdc_win);
+    if (!hdc_blit) fatal("hdc_blit failed: 0x%x", GetLastError());
+
+    prev_blit = SelectObject(hdc_blit, bl->bitmap);
+    if (prev_blit == NULL || prev_blit == HGDI_ERROR)
+        fatal("SelectObject for hdc_main failed: 0x%x", GetLastError());
+
+    if (!BitBlt(hdc_blit, 0, 0, bl->w, bl->h,
+                fe->hdc, x, y, SRCCOPY))
+        fatal("BitBlt failed: 0x%x", GetLastError());
+
+    SelectObject(hdc_blit, prev_blit);
+    DeleteDC(hdc_blit);
+    ReleaseDC(fe->hwnd, hdc_win);
+}
+
+static void win_blitter_load(void *handle, blitter *bl, int x, int y)
+{
+    frontend *fe = (frontend *)handle;
+    HDC hdc_win, hdc_blit;
+    HBITMAP prev_blit;
+
+    assert(fe->drawstatus == DRAWING);
+
+    assert(bl->bitmap); /* we should always have saved before loading */
+
+    if (x == BLITTER_FROMSAVED) x = bl->x;
+    if (y == BLITTER_FROMSAVED) y = bl->y;
+
+    hdc_win = GetDC(fe->hwnd);
+    hdc_blit = CreateCompatibleDC(hdc_win);
+
+    prev_blit = SelectObject(hdc_blit, bl->bitmap);
+
+    BitBlt(fe->hdc, x, y, bl->w, bl->h,
+           hdc_blit, 0, 0, SRCCOPY);
+
+    SelectObject(hdc_blit, prev_blit);
+    DeleteDC(hdc_blit);
+    ReleaseDC(fe->hwnd, hdc_win);
+}
+
+void frontend_default_colour(frontend *fe, float *output)
+{
+    DWORD c = GetSysColor(COLOR_MENU); /* ick */
+
+    output[0] = (float)(GetRValue(c) / 255.0);
+    output[1] = (float)(GetGValue(c) / 255.0);
+    output[2] = (float)(GetBValue(c) / 255.0);
+}
+
+static POINT win_transform_point(frontend *fe, int x, int y)
+{
+    POINT ret;
+
+    assert(fe->drawstatus != NOTHING);
+
+    if (fe->drawstatus == PRINTING) {
+        ret.x = (int)(fe->printoffsetx + fe->printpixelscale * x);
+        ret.y = (int)(fe->printoffsety + fe->printpixelscale * y);
+    } else {
+        ret.x = x;
+        ret.y = y;
+    }
+
+    return ret;
+}
+
+static void win_text_colour(frontend *fe, int colour)
+{
+    assert(fe->drawstatus != NOTHING);
+
+    if (fe->drawstatus == PRINTING) {
+        int hatch;
+        float r, g, b;
+        print_get_colour(fe->dr, colour, fe->printcolour, &hatch, &r, &g, &b);
+
+        /*
+         * Displaying text in hatched colours is not permitted.
+         */
+        assert(hatch < 0);
+
+        SetTextColor(fe->hdc, RGB(r * 255, g * 255, b * 255));
+    } else {
+        SetTextColor(fe->hdc, fe->colours[colour]);
+    }
+}
+
+static void win_set_brush(frontend *fe, int colour)
+{
+    HBRUSH br;
+    assert(fe->drawstatus != NOTHING);
+
+    if (fe->drawstatus == PRINTING) {
+        int hatch;
+        float r, g, b;
+        print_get_colour(fe->dr, colour, fe->printcolour, &hatch, &r, &g, &b);
+
+        if (hatch < 0) {
+            br = CreateSolidBrush(RGB(r * 255, g * 255, b * 255));
+        } else {
+#ifdef _WIN32_WCE
+            /*
+             * This is only ever required during printing, and the
+             * PocketPC port doesn't support printing.
+             */
+            fatal("CreateHatchBrush not supported");
+#else
+            br = CreateHatchBrush(hatch == HATCH_BACKSLASH ? HS_FDIAGONAL :
+                                  hatch == HATCH_SLASH ? HS_BDIAGONAL :
+                                  hatch == HATCH_HORIZ ? HS_HORIZONTAL :
+                                  hatch == HATCH_VERT ? HS_VERTICAL :
+                                  hatch == HATCH_PLUS ? HS_CROSS :
+                                  /* hatch == HATCH_X ? */ HS_DIAGCROSS,
+                                  RGB(0,0,0));
+#endif
+        }
+    } else {
+        br = fe->brushes[colour];
+    }
+    fe->oldbr = SelectObject(fe->hdc, br);
+}
+
+static void win_reset_brush(frontend *fe)
+{
+    HBRUSH br;
+
+    assert(fe->drawstatus != NOTHING);
+
+    br = SelectObject(fe->hdc, fe->oldbr);
+    if (fe->drawstatus == PRINTING)
+        DeleteObject(br);
+}
+
+static void win_set_pen(frontend *fe, int colour, int thin)
+{
+    HPEN pen;
+    assert(fe->drawstatus != NOTHING);
+
+    if (fe->drawstatus == PRINTING) {
+        int hatch;
+        float r, g, b;
+        int width = thin ? 0 : fe->linewidth;
+
+        if (fe->linedotted)
+            width = 0;
+
+        print_get_colour(fe->dr, colour, fe->printcolour, &hatch, &r, &g, &b);
+        /*
+         * Stroking in hatched colours is not permitted.
+         */
+        assert(hatch < 0);
+        pen = CreatePen(fe->linedotted ? PS_DOT : PS_SOLID,
+                        width, RGB(r * 255, g * 255, b * 255));
+    } else {
+        pen = fe->pens[colour];
+    }
+    fe->oldpen = SelectObject(fe->hdc, pen);
+}
+
+static void win_reset_pen(frontend *fe)
+{
+    HPEN pen;
+
+    assert(fe->drawstatus != NOTHING);
+
+    pen = SelectObject(fe->hdc, fe->oldpen);
+    if (fe->drawstatus == PRINTING)
+        DeleteObject(pen);
+}
+
+static void win_clip(void *handle, int x, int y, int w, int h)
+{
+    frontend *fe = (frontend *)handle;
+    POINT p, q;
+
+    if (fe->drawstatus == NOTHING)
+        return;
+
+    p = win_transform_point(fe, x, y);
+    q = win_transform_point(fe, x+w, y+h);
+    IntersectClipRect(fe->hdc, p.x, p.y, q.x, q.y);
+}
+
+static void win_unclip(void *handle)
+{
+    frontend *fe = (frontend *)handle;
+
+    if (fe->drawstatus == NOTHING)
+        return;
+
+    SelectClipRgn(fe->hdc, NULL);
+}
+
+static void win_draw_text(void *handle, int x, int y, int fonttype,
+                          int fontsize, int align, int colour, char *text)
+{
+    frontend *fe = (frontend *)handle;
+    POINT xy;
+    int i;
+    LOGFONT lf;
+
+    if (fe->drawstatus == NOTHING)
+        return;
+
+    if (fe->drawstatus == PRINTING)
+        fontsize = (int)(fontsize * fe->printpixelscale);
+
+    xy = win_transform_point(fe, x, y);
+
+    /*
+     * Find or create the font.
+     */
+    for (i = fe->fontstart; i < fe->nfonts; i++)
+        if (fe->fonts[i].type == fonttype && fe->fonts[i].size == fontsize)
+            break;
+
+    if (i == fe->nfonts) {
+        if (fe->fontsize <= fe->nfonts) {
+            fe->fontsize = fe->nfonts + 10;
+            fe->fonts = sresize(fe->fonts, fe->fontsize, struct font);
+        }
+
+        fe->nfonts++;
+
+        fe->fonts[i].type = fonttype;
+        fe->fonts[i].size = fontsize;
+
+        memset (&lf, 0, sizeof(LOGFONT));
+        lf.lfHeight = -fontsize;
+        lf.lfWeight = (fe->drawstatus == PRINTING ? 0 : FW_BOLD);
+        lf.lfCharSet = DEFAULT_CHARSET;
+        lf.lfOutPrecision = OUT_DEFAULT_PRECIS;
+        lf.lfClipPrecision = CLIP_DEFAULT_PRECIS;
+        lf.lfQuality = DEFAULT_QUALITY;
+        lf.lfPitchAndFamily = (fonttype == FONT_FIXED ?
+                               FIXED_PITCH | FF_DONTCARE :
+                               VARIABLE_PITCH | FF_SWISS);
+#ifdef _WIN32_WCE
+        wcscpy(lf.lfFaceName, TEXT("Tahoma"));
+#endif
+
+        fe->fonts[i].font = CreateFontIndirect(&lf);
+    }
+
+    /*
+     * Position and draw the text.
+     */
+    {
+        HFONT oldfont;
+        TEXTMETRIC tm;
+        SIZE size;
+        WCHAR wText[256];
+        MultiByteToWideChar (CP_UTF8, 0, text, -1, wText, 256);
+
+        oldfont = SelectObject(fe->hdc, fe->fonts[i].font);
+        if (GetTextMetrics(fe->hdc, &tm)) {
+            if (align & ALIGN_VCENTRE)
+                xy.y -= (tm.tmAscent+tm.tmDescent)/2;
+            else
+                xy.y -= tm.tmAscent;
+        }
+        if (GetTextExtentPoint32W(fe->hdc, wText, wcslen(wText), &size))
+        {
+            if (align & ALIGN_HCENTRE)
+                xy.x -= size.cx / 2;
+            else if (align & ALIGN_HRIGHT)
+                xy.x -= size.cx;
+        }
+        SetBkMode(fe->hdc, TRANSPARENT);
+        win_text_colour(fe, colour);
+        ExtTextOutW(fe->hdc, xy.x, xy.y, 0, NULL, wText, wcslen(wText), NULL);
+        SelectObject(fe->hdc, oldfont);
+    }
+}
+
+static void win_draw_rect(void *handle, int x, int y, int w, int h, int colour)
+{
+    frontend *fe = (frontend *)handle;
+    POINT p, q;
+
+    if (fe->drawstatus == NOTHING)
+        return;
+
+    if (fe->drawstatus == DRAWING && w == 1 && h == 1) {
+        /*
+         * Rectangle() appears to get uppity if asked to draw a 1x1
+         * rectangle, presumably on the grounds that that's beneath
+         * its dignity and you ought to be using SetPixel instead.
+         * So I will.
+         */
+        SetPixel(fe->hdc, x, y, fe->colours[colour]);
+    } else {
+        win_set_brush(fe, colour);
+        win_set_pen(fe, colour, TRUE);
+        p = win_transform_point(fe, x, y);
+        q = win_transform_point(fe, x+w, y+h);
+        Rectangle(fe->hdc, p.x, p.y, q.x, q.y);
+        win_reset_brush(fe);
+        win_reset_pen(fe);
+    }
+}
+
+static void win_draw_line(void *handle, int x1, int y1, int x2, int y2, int colour)
+{
+    frontend *fe = (frontend *)handle;
+    POINT pp[2];
+
+    if (fe->drawstatus == NOTHING)
+        return;
+
+    win_set_pen(fe, colour, FALSE);
+    pp[0] = win_transform_point(fe, x1, y1);
+    pp[1] = win_transform_point(fe, x2, y2);
+    Polyline(fe->hdc, pp, 2);
+    if (fe->drawstatus == DRAWING)
+        SetPixel(fe->hdc, pp[1].x, pp[1].y, fe->colours[colour]);
+    win_reset_pen(fe);
+}
+
+static void win_draw_circle(void *handle, int cx, int cy, int radius,
+                            int fillcolour, int outlinecolour)
+{
+    frontend *fe = (frontend *)handle;
+    POINT p, q;
+
+    assert(outlinecolour >= 0);
+
+    if (fe->drawstatus == NOTHING)
+        return;
+
+    if (fillcolour >= 0)
+        win_set_brush(fe, fillcolour);
+    else
+        fe->oldbr = SelectObject(fe->hdc, GetStockObject(NULL_BRUSH));
+
+    win_set_pen(fe, outlinecolour, FALSE);
+    p = win_transform_point(fe, cx - radius, cy - radius);
+    q = win_transform_point(fe, cx + radius, cy + radius);
+    Ellipse(fe->hdc, p.x, p.y, q.x+1, q.y+1);
+    win_reset_brush(fe);
+    win_reset_pen(fe);
+}
+
+static void win_draw_polygon(void *handle, int *coords, int npoints,
+                             int fillcolour, int outlinecolour)
+{
+    frontend *fe = (frontend *)handle;
+    POINT *pts;
+    int i;
+
+    if (fe->drawstatus == NOTHING)
+        return;
+
+    pts = snewn(npoints+1, POINT);
+
+    for (i = 0; i <= npoints; i++) {
+        int j = (i < npoints ? i : 0);
+        pts[i] = win_transform_point(fe, coords[j*2], coords[j*2+1]);
+    }
+
+    assert(outlinecolour >= 0);
+
+    if (fillcolour >= 0) {
+        win_set_brush(fe, fillcolour);
+        win_set_pen(fe, outlinecolour, FALSE);
+        Polygon(fe->hdc, pts, npoints);
+        win_reset_brush(fe);
+        win_reset_pen(fe);
+    } else {
+        win_set_pen(fe, outlinecolour, FALSE);
+        Polyline(fe->hdc, pts, npoints+1);
+        win_reset_pen(fe);
+    }
+
+    sfree(pts);
+}
+
+static void win_start_draw(void *handle)
+{
+    frontend *fe = (frontend *)handle;
+    HDC hdc_win;
+
+    assert(fe->drawstatus == NOTHING);
+
+    hdc_win = GetDC(fe->hwnd);
+    fe->hdc = CreateCompatibleDC(hdc_win);
+    fe->prevbm = SelectObject(fe->hdc, fe->bitmap);
+    ReleaseDC(fe->hwnd, hdc_win);
+    fe->clip = NULL;
+#ifndef _WIN32_WCE
+    SetMapMode(fe->hdc, MM_TEXT);
+#endif
+    fe->drawstatus = DRAWING;
+}
+
+static void win_draw_update(void *handle, int x, int y, int w, int h)
+{
+    frontend *fe = (frontend *)handle;
+    RECT r;
+
+    if (fe->drawstatus != DRAWING)
+        return;
+
+    r.left = x;
+    r.top = y;
+    r.right = x + w;
+    r.bottom = y + h;
+
+    OffsetRect(&r, fe->bitmapPosition.left, fe->bitmapPosition.top);
+    InvalidateRect(fe->hwnd, &r, FALSE);
+}
+
+static void win_end_draw(void *handle)
+{
+    frontend *fe = (frontend *)handle;
+    assert(fe->drawstatus == DRAWING);
+    SelectObject(fe->hdc, fe->prevbm);
+    DeleteDC(fe->hdc);
+    if (fe->clip) {
+        DeleteObject(fe->clip);
+        fe->clip = NULL;
+    }
+    fe->drawstatus = NOTHING;
+}
+
+static void win_line_width(void *handle, float width)
+{
+    frontend *fe = (frontend *)handle;
+
+    assert(fe->drawstatus != DRAWING);
+    if (fe->drawstatus == NOTHING)
+        return;
+
+    fe->linewidth = (int)(width * fe->printpixelscale);
+}
+
+static void win_line_dotted(void *handle, int dotted)
+{
+    frontend *fe = (frontend *)handle;
+
+    assert(fe->drawstatus != DRAWING);
+    if (fe->drawstatus == NOTHING)
+        return;
+
+    fe->linedotted = dotted;
+}
+
+static void win_begin_doc(void *handle, int pages)
+{
+    frontend *fe = (frontend *)handle;
+
+    assert(fe->drawstatus != DRAWING);
+    if (fe->drawstatus == NOTHING)
+        return;
+
+    if (StartDoc(fe->hdc, &fe->di) <= 0) {
+        char *e = geterrstr();
+        MessageBox(fe->hwnd, e, "Error starting to print",
+                   MB_ICONERROR | MB_OK);
+        sfree(e);
+        fe->drawstatus = NOTHING;
+    }
+
+    /*
+     * Push a marker on the font stack so that we won't use the
+     * same fonts for printing and drawing. (This is because
+     * drawing seems to look generally better in bold, but printing
+     * is better not in bold.)
+     */
+    fe->fontstart = fe->nfonts;
+}
+
+static void win_begin_page(void *handle, int number)
+{
+    frontend *fe = (frontend *)handle;
+
+    assert(fe->drawstatus != DRAWING);
+    if (fe->drawstatus == NOTHING)
+        return;
+
+    if (StartPage(fe->hdc) <= 0) {
+        char *e = geterrstr();
+        MessageBox(fe->hwnd, e, "Error starting a page",
+                   MB_ICONERROR | MB_OK);
+        sfree(e);
+        fe->drawstatus = NOTHING;
+    }
+}
+
+static void win_begin_puzzle(void *handle, float xm, float xc,
+                             float ym, float yc, int pw, int ph, float wmm)
+{
+    frontend *fe = (frontend *)handle;
+    int ppw, pph, pox, poy;
+    float mmpw, mmph, mmox, mmoy;
+    float scale;
+
+    assert(fe->drawstatus != DRAWING);
+    if (fe->drawstatus == NOTHING)
+        return;
+
+    ppw = GetDeviceCaps(fe->hdc, HORZRES);
+    pph = GetDeviceCaps(fe->hdc, VERTRES);
+    mmpw = (float)GetDeviceCaps(fe->hdc, HORZSIZE);
+    mmph = (float)GetDeviceCaps(fe->hdc, VERTSIZE);
+
+    /*
+     * Compute the puzzle's position on the logical page.
+     */
+    mmox = xm * mmpw + xc;
+    mmoy = ym * mmph + yc;
+
+    /*
+     * Work out what that comes to in pixels.
+     */
+    pox = (int)(mmox * (float)ppw / mmpw);
+    poy = (int)(mmoy * (float)pph / mmph);
+
+    /*
+     * And determine the scale.
+     * 
+     * I need a scale such that the maximum puzzle-coordinate
+     * extent of the rectangle (pw * scale) is equal to the pixel
+     * equivalent of the puzzle's millimetre width (wmm * ppw /
+     * mmpw).
+     */
+    scale = (wmm * ppw) / (mmpw * pw);
+
+    /*
+     * Now store pox, poy and scale for use in the main drawing
+     * functions.
+     */
+    fe->printoffsetx = pox;
+    fe->printoffsety = poy;
+    fe->printpixelscale = scale;
+
+    fe->linewidth = 1;
+    fe->linedotted = FALSE;
+}
+
+static void win_end_puzzle(void *handle)
+{
+    /* Nothing needs to be done here. */
+}
+
+static void win_end_page(void *handle, int number)
+{
+    frontend *fe = (frontend *)handle;
+
+    assert(fe->drawstatus != DRAWING);
+
+    if (fe->drawstatus == NOTHING)
+        return;
+
+    if (EndPage(fe->hdc) <= 0) {
+        char *e = geterrstr();
+        MessageBox(fe->hwnd, e, "Error finishing a page",
+                   MB_ICONERROR | MB_OK);
+        sfree(e);
+        fe->drawstatus = NOTHING;
+    }
+}
+
+static void win_end_doc(void *handle)
+{
+    frontend *fe = (frontend *)handle;
+
+    assert(fe->drawstatus != DRAWING);
+
+    /*
+     * Free all the fonts created since we began printing.
+     */
+    while (fe->nfonts > fe->fontstart) {
+        fe->nfonts--;
+        DeleteObject(fe->fonts[fe->nfonts].font);
+    }
+    fe->fontstart = 0;
+
+    /*
+     * The MSDN web site sample code doesn't bother to call EndDoc
+     * if an error occurs half way through printing. I expect doing
+     * so would cause the erroneous document to actually be
+     * printed, or something equally undesirable.
+     */
+    if (fe->drawstatus == NOTHING)
+        return;
+
+    if (EndDoc(fe->hdc) <= 0) {
+        char *e = geterrstr();
+        MessageBox(fe->hwnd, e, "Error finishing printing",
+                   MB_ICONERROR | MB_OK);
+        sfree(e);
+        fe->drawstatus = NOTHING;
+    }
+}
+
+char *win_text_fallback(void *handle, const char *const *strings, int nstrings)
+{
+    /*
+     * We assume Windows can cope with any UTF-8 likely to be
+     * emitted by a puzzle.
+     */
+    return dupstr(strings[0]);
+}
+
+const struct drawing_api win_drawing = {
+    win_draw_text,
+    win_draw_rect,
+    win_draw_line,
+    win_draw_polygon,
+    win_draw_circle,
+    win_draw_update,
+    win_clip,
+    win_unclip,
+    win_start_draw,
+    win_end_draw,
+    win_status_bar,
+    win_blitter_new,
+    win_blitter_free,
+    win_blitter_save,
+    win_blitter_load,
+    win_begin_doc,
+    win_begin_page,
+    win_begin_puzzle,
+    win_end_puzzle,
+    win_end_page,
+    win_end_doc,
+    win_line_width,
+    win_line_dotted,
+    win_text_fallback,
+};
+
+void print(frontend *fe)
+{
+#ifndef _WIN32_WCE
+    PRINTDLG pd;
+    char doctitle[256];
+    document *doc;
+    midend *nme = NULL;  /* non-interactive midend for bulk puzzle generation */
+    int i;
+    char *err = NULL;
+
+    /*
+     * Create our document structure and fill it up with puzzles.
+     */
+    doc = document_new(fe->printw, fe->printh, fe->printscale / 100.0F);
+    for (i = 0; i < fe->printcount; i++) {
+        if (i == 0 && fe->printcurr) {
+            err = midend_print_puzzle(fe->me, doc, fe->printsolns);
+        } else {
+            if (!nme) {
+                game_params *params;
+
+                nme = midend_new(NULL, fe->game, NULL, NULL);
+
+                /*
+                 * Set the non-interactive mid-end to have the same
+                 * parameters as the standard one.
+                 */
+                params = midend_get_params(fe->me);
+                midend_set_params(nme, params);
+                fe->game->free_params(params);
+            }
+
+            midend_new_game(nme);
+            err = midend_print_puzzle(nme, doc, fe->printsolns);
+        }
+        if (err)
+            break;
+    }
+    if (nme)
+        midend_free(nme);
+
+    if (err) {
+        MessageBox(fe->hwnd, err, "Error preparing puzzles for printing",
+                   MB_ICONERROR | MB_OK);
+        document_free(doc);
+        return;
+    }
+
+    memset(&pd, 0, sizeof(pd));
+    pd.lStructSize = sizeof(pd);
+    pd.hwndOwner = fe->hwnd;
+    pd.hDevMode = NULL;
+    pd.hDevNames = NULL;
+    pd.Flags = PD_USEDEVMODECOPIESANDCOLLATE | PD_RETURNDC |
+        PD_NOPAGENUMS | PD_NOSELECTION;
+    pd.nCopies = 1;
+    pd.nFromPage = pd.nToPage = 0xFFFF;
+    pd.nMinPage = pd.nMaxPage = 1;
+
+    if (!PrintDlg(&pd)) {
+        document_free(doc);
+        return;
+    }
+
+    /*
+     * Now pd.hDC is a device context for the printer.
+     */
+
+    /*
+     * FIXME: IWBNI we put up an Abort box here.
+     */
+
+    memset(&fe->di, 0, sizeof(fe->di));
+    fe->di.cbSize = sizeof(fe->di);
+    sprintf(doctitle, "Printed puzzles from %s (from Simon Tatham's"
+            " Portable Puzzle Collection)", fe->game->name);
+    fe->di.lpszDocName = doctitle;
+    fe->di.lpszOutput = NULL;
+    fe->di.lpszDatatype = NULL;
+    fe->di.fwType = 0;
+
+    fe->drawstatus = PRINTING;
+    fe->hdc = pd.hDC;
+
+    fe->dr = drawing_new(&win_drawing, NULL, fe);
+    document_print(doc, fe->dr);
+    drawing_free(fe->dr);
+    fe->dr = NULL;
+
+    fe->drawstatus = NOTHING;
+
+    DeleteDC(pd.hDC);
+    document_free(doc);
+#endif
+}
+
+void deactivate_timer(frontend *fe)
+{
+    if (!fe)
+        return;                        /* for non-interactive midend */
+    if (fe->hwnd) KillTimer(fe->hwnd, fe->timer);
+    fe->timer = 0;
+}
+
+void activate_timer(frontend *fe)
+{
+    if (!fe)
+        return;                        /* for non-interactive midend */
+    if (!fe->timer) {
+        fe->timer = SetTimer(fe->hwnd, 1, 20, NULL);
+        fe->timer_last_tickcount = GetTickCount();
+    }
+}
+
+void write_clip(HWND hwnd, char *data)
+{
+    HGLOBAL clipdata;
+    int len, i, j;
+    char *data2;
+    void *lock;
+
+    /*
+     * Windows expects CRLF in the clipboard, so we must convert
+     * any \n that has come out of the puzzle backend.
+     */
+    len = 0;
+    for (i = 0; data[i]; i++) {
+        if (data[i] == '\n')
+            len++;
+        len++;
+    }
+    data2 = snewn(len+1, char);
+    j = 0;
+    for (i = 0; data[i]; i++) {
+        if (data[i] == '\n')
+            data2[j++] = '\r';
+        data2[j++] = data[i];
+    }
+    assert(j == len);
+    data2[j] = '\0';
+
+    clipdata = GlobalAlloc(GMEM_DDESHARE | GMEM_MOVEABLE, len + 1);
+    if (!clipdata) {
+        sfree(data2);
+        return;
+    }
+    lock = GlobalLock(clipdata);
+    if (!lock) {
+        GlobalFree(clipdata);
+        sfree(data2);
+        return;
+    }
+    memcpy(lock, data2, len);
+    ((unsigned char *) lock)[len] = 0;
+    GlobalUnlock(clipdata);
+
+    if (OpenClipboard(hwnd)) {
+        EmptyClipboard();
+        SetClipboardData(CF_TEXT, clipdata);
+        CloseClipboard();
+    } else
+        GlobalFree(clipdata);
+
+    sfree(data2);
+}
+
+/*
+ * Set up Help and see if we can find a help file.
+ */
+static void init_help(void)
+{
+#ifndef _WIN32_WCE
+    char b[2048], *p, *q, *r;
+    FILE *fp;
+
+    /*
+     * Find the executable file path, so we can look alongside
+     * it for help files. Trim the filename off the end.
+     */
+    GetModuleFileName(NULL, b, sizeof(b) - 1);
+    r = b;
+    p = strrchr(b, '\\');
+    if (p && p >= r) r = p+1;
+    q = strrchr(b, ':');
+    if (q && q >= r) r = q+1;
+
+#ifndef NO_HTMLHELP
+    /*
+     * Try HTML Help first.
+     */
+    strcpy(r, CHM_FILE_NAME);
+    if ( (fp = fopen(b, "r")) != NULL) {
+        fclose(fp);
+
+        /*
+         * We have a .CHM. See if we can use it.
+         */
+        hh_dll = LoadLibrary("hhctrl.ocx");
+        if (hh_dll) {
+            htmlhelp = (htmlhelp_t)GetProcAddress(hh_dll, "HtmlHelpA");
+            if (!htmlhelp)
+                FreeLibrary(hh_dll);
+        }
+        if (htmlhelp) {
+            help_path = dupstr(b);
+            help_type = CHM;
+            return;
+        }
+    }
+#endif /* NO_HTMLHELP */
+
+    /*
+     * Now try old-style .HLP.
+     */
+    strcpy(r, HELP_FILE_NAME);
+    if ( (fp = fopen(b, "r")) != NULL) {
+        fclose(fp);
+
+        help_path = dupstr(b);
+        help_type = HLP;
+
+        /*
+         * See if there's a .CNT file alongside it.
+         */
+        strcpy(r, HELP_CNT_NAME);
+        if ( (fp = fopen(b, "r")) != NULL) {
+            fclose(fp);
+            help_has_contents = TRUE;
+        } else
+            help_has_contents = FALSE;
+
+        return;
+    }
+
+    help_type = NONE;          /* didn't find any */
+#endif
+}
+
+#ifndef _WIN32_WCE
+
+/*
+ * Start Help.
+ */
+static void start_help(frontend *fe, const char *topic)
+{
+    char *str = NULL;
+    int cmd;
+
+    switch (help_type) {
+      case HLP:
+        assert(help_path);
+        if (topic) {
+            str = snewn(10+strlen(topic), char);
+            sprintf(str, "JI(`',`%s')", topic);
+            cmd = HELP_COMMAND;
+        } else if (help_has_contents) {
+            cmd = HELP_FINDER;
+        } else {
+            cmd = HELP_CONTENTS;
+        }
+        WinHelp(fe->hwnd, help_path, cmd, (DWORD)str);
+        fe->help_running = TRUE;
+        break;
+      case CHM:
+#ifndef NO_HTMLHELP
+        assert(help_path);
+        assert(htmlhelp);
+        if (topic) {
+            str = snewn(20 + strlen(topic) + strlen(help_path), char);
+            sprintf(str, "%s::/%s.html>main", help_path, topic);
+        } else {
+            str = dupstr(help_path);
+        }
+        htmlhelp(fe->hwnd, str, HH_DISPLAY_TOPIC, 0);
+        fe->help_running = TRUE;
+        break;
+#endif /* NO_HTMLHELP */
+      case NONE:
+        assert(!"This shouldn't happen");
+        break;
+    }
+
+    sfree(str);
+}
+
+/*
+ * Stop Help on window cleanup.
+ */
+static void stop_help(frontend *fe)
+{
+    if (fe->help_running) {
+        switch (help_type) {
+          case HLP:
+            WinHelp(fe->hwnd, help_path, HELP_QUIT, 0);
+            break;
+          case CHM:
+#ifndef NO_HTMLHELP
+            assert(htmlhelp);
+            htmlhelp(NULL, NULL, HH_CLOSE_ALL, 0);
+            break;
+#endif /* NO_HTMLHELP */
+          case NONE:
+            assert(!"This shouldn't happen");
+            break;
+        }
+        fe->help_running = FALSE;
+    }
+}
+
+#endif
+
+/*
+ * Terminate Help on process exit.
+ */
+static void cleanup_help(void)
+{
+    /* Nothing to do currently.
+     * (If we were running HTML Help single-threaded, this is where we'd
+     * call HH_UNINITIALIZE.) */
+}
+
+static int get_statusbar_height(frontend *fe)
+{
+    int sy;
+    if (fe->statusbar) {
+        RECT sr;
+        GetWindowRect(fe->statusbar, &sr);
+        sy = sr.bottom - sr.top;
+    } else {
+        sy = 0;
+    }
+    return sy;
+}
+
+static void adjust_statusbar(frontend *fe, RECT *r)
+{
+    int sy;
+
+    if (!fe->statusbar) return;
+
+    sy = get_statusbar_height(fe);
+#ifndef _WIN32_WCE
+    SetWindowPos(fe->statusbar, NULL, 0, r->bottom-r->top-sy, r->right-r->left,
+                 sy, SWP_NOZORDER);
+#endif
+}
+
+static void get_menu_size(HWND wh, RECT *r)
+{
+    HMENU bar = GetMenu(wh);
+    RECT rect;
+    int i;
+
+    SetRect(r, 0, 0, 0, 0);
+    for (i = 0; i < GetMenuItemCount(bar); i++) {
+        GetMenuItemRect(wh, bar, i, &rect);
+        UnionRect(r, r, &rect);
+    }
+}
+
+/*
+ * Given a proposed new puzzle size (cx,cy), work out the actual
+ * puzzle size that would be (px,py) and the window size including
+ * furniture (wx,wy).
+ */
+
+static int check_window_resize(frontend *fe, int cx, int cy,
+                               int *px, int *py,
+                               int *wx, int *wy)
+{
+    RECT r;
+    int x, y, sy = get_statusbar_height(fe), changed = 0;
+
+    /* disallow making window thinner than menu bar */
+    x = max(cx, fe->xmin);
+    y = max(cy - sy, fe->ymin);
+
+    /*
+     * See if we actually got the window size we wanted, and adjust
+     * the puzzle size if not.
+     */
+    midend_size(fe->me, &x, &y, TRUE);
+    if (x != cx || y != cy) {
+        /*
+         * Resize the window, now we know what size we _really_
+         * want it to be.
+         */
+        r.left = r.top = 0;
+        r.right = x;
+        r.bottom = y + sy;
+        AdjustWindowRectEx(&r, WINFLAGS, TRUE, 0);
+        *wx = r.right - r.left;
+        *wy = r.bottom - r.top;
+        changed = 1;
+    }
+
+    *px = x;
+    *py = y;
+
+    fe->puzz_scale =
+      (float)midend_tilesize(fe->me) / (float)fe->game->preferred_tilesize;
+
+    return changed;
+}
+
+/*
+ * Given the current window size, make sure it's sane for the
+ * current puzzle and resize if necessary.
+ */
+
+static void check_window_size(frontend *fe, int *px, int *py)
+{
+    RECT r;
+    int wx, wy, cx, cy;
+
+    GetClientRect(fe->hwnd, &r);
+    cx = r.right - r.left;
+    cy = r.bottom - r.top;
+
+    if (check_window_resize(fe, cx, cy, px, py, &wx, &wy)) {
+#ifdef _WIN32_WCE
+        SetWindowPos(fe->hwnd, NULL, 0, 0, wx, wy,
+                     SWP_NOMOVE | SWP_NOZORDER);
+#endif
+        ;
+    }
+
+    GetClientRect(fe->hwnd, &r);
+    adjust_statusbar(fe, &r);
+}
+
+static void get_max_puzzle_size(frontend *fe, int *x, int *y)
+{
+    RECT r, sr;
+
+    if (SystemParametersInfo(SPI_GETWORKAREA, 0, &sr, FALSE)) {
+        *x = sr.right - sr.left;
+        *y = sr.bottom - sr.top;
+        r.left = 100;
+        r.right = 200;
+        r.top = 100;
+        r.bottom = 200;
+        AdjustWindowRectEx(&r, WINFLAGS, TRUE, 0);
+        *x -= r.right - r.left - 100;
+        *y -= r.bottom - r.top - 100;
+    } else {
+        *x = *y = INT_MAX;
+    }
+
+    if (fe->statusbar != NULL) {
+        GetWindowRect(fe->statusbar, &sr);
+        *y -= sr.bottom - sr.top;
+    }
+}
+
+#ifdef _WIN32_WCE
+/* Toolbar buttons on the numeric pad */
+static TBBUTTON tbNumpadButtons[] =
+{
+    {0, IDM_KEYEMUL + '1', TBSTATE_ENABLED, TBSTYLE_BUTTON,  0, -1},
+    {1, IDM_KEYEMUL + '2', TBSTATE_ENABLED, TBSTYLE_BUTTON,  0, -1},
+    {2, IDM_KEYEMUL + '3', TBSTATE_ENABLED, TBSTYLE_BUTTON,  0, -1},
+    {3, IDM_KEYEMUL + '4', TBSTATE_ENABLED, TBSTYLE_BUTTON,  0, -1},
+    {4, IDM_KEYEMUL + '5', TBSTATE_ENABLED, TBSTYLE_BUTTON,  0, -1},
+    {5, IDM_KEYEMUL + '6', TBSTATE_ENABLED, TBSTYLE_BUTTON,  0, -1},
+    {6, IDM_KEYEMUL + '7', TBSTATE_ENABLED, TBSTYLE_BUTTON,  0, -1},
+    {7, IDM_KEYEMUL + '8', TBSTATE_ENABLED, TBSTYLE_BUTTON,  0, -1},
+    {8, IDM_KEYEMUL + '9', TBSTATE_ENABLED, TBSTYLE_BUTTON,  0, -1},
+    {9, IDM_KEYEMUL + ' ', TBSTATE_ENABLED, TBSTYLE_BUTTON,  0, -1}
+};
+#endif
+
+/*
+ * Allocate a new frontend structure and create its main window.
+ */
+static frontend *frontend_new(HINSTANCE inst)
+{
+    frontend *fe;
+    const char *nogame = "Puzzles (no game selected)";
+
+    fe = snew(frontend);
+
+    fe->inst = inst;
+
+    fe->game = NULL;
+    fe->me = NULL;
+
+    fe->timer = 0;
+    fe->hwnd = NULL;
+
+    fe->help_running = FALSE;
+
+    fe->drawstatus = NOTHING;
+    fe->dr = NULL;
+    fe->fontstart = 0;
+
+    fe->fonts = NULL;
+    fe->nfonts = fe->fontsize = 0;
+
+    fe->colours = NULL;
+    fe->brushes = NULL;
+    fe->pens = NULL;
+
+    fe->puzz_scale = 1.0;
+
+    #ifdef _WIN32_WCE
+    MultiByteToWideChar (CP_ACP, 0, nogame, -1, wGameName, 256);
+    fe->hwnd = CreateWindowEx(0, wClassName, wGameName,
+                              WS_VISIBLE,
+                              CW_USEDEFAULT, CW_USEDEFAULT,
+                              CW_USEDEFAULT, CW_USEDEFAULT,
+                              NULL, NULL, inst, NULL);
+
+    {
+        SHMENUBARINFO mbi;
+        RECT rc, rcBar, rcTB, rcClient;
+
+        memset (&mbi, 0, sizeof(SHMENUBARINFO));
+        mbi.cbSize     = sizeof(SHMENUBARINFO);
+        mbi.hwndParent = fe->hwnd;
+        mbi.nToolBarId = IDR_MENUBAR1;
+        mbi.hInstRes   = inst;
+
+        SHCreateMenuBar(&mbi);
+
+        GetWindowRect(fe->hwnd, &rc);
+        GetWindowRect(mbi.hwndMB, &rcBar);
+        rc.bottom -= rcBar.bottom - rcBar.top;
+        MoveWindow(fe->hwnd, rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, FALSE);
+
+        fe->numpad = NULL;
+    }
+#else
+    fe->hwnd = CreateWindowEx(0, CLASSNAME, nogame,
+                              WS_OVERLAPPEDWINDOW &~
+                              (WS_MAXIMIZEBOX),
+                              CW_USEDEFAULT, CW_USEDEFAULT,
+                              CW_USEDEFAULT, CW_USEDEFAULT,
+                              NULL, NULL, inst, NULL);
+    if (!fe->hwnd) {
+        DWORD lerr = GetLastError();
+        printf("no window: 0x%x\n", lerr);
+    }
+#endif
+
+    fe->gamemenu = NULL;
+    fe->presets = NULL;
+
+    fe->statusbar = NULL;
+    fe->bitmap = NULL;
+
+    SetWindowLong(fe->hwnd, GWL_USERDATA, (LONG)fe);
+
+    return fe;
+}
+
+static void savefile_write(void *wctx, void *buf, int len)
+{
+    FILE *fp = (FILE *)wctx;
+    fwrite(buf, 1, len, fp);
+}
+
+static int savefile_read(void *wctx, void *buf, int len)
+{
+    FILE *fp = (FILE *)wctx;
+    int ret;
+
+    ret = fread(buf, 1, len, fp);
+    return (ret == len);
+}
+
+/*
+ * Create an appropriate midend structure to go in a puzzle window,
+ * given a game type and/or a command-line argument.
+ *
+ * 'arg' can be either a game ID string (descriptive, random, or a
+ * plain set of parameters) or the filename of a save file. The two
+ * boolean flag arguments indicate which possibilities are
+ * permissible.
+ */
+static midend *midend_for_new_game(frontend *fe, const game *cgame,
+                                   char *arg, int maybe_game_id,
+                                   int maybe_save_file, char **error)
+{
+    midend *me = NULL;
+
+    if (!arg) {
+        if (me) midend_free(me);
+        me = midend_new(fe, cgame, &win_drawing, fe);
+        midend_new_game(me);
+    } else {
+        FILE *fp;
+        char *err_param, *err_load;
+
+        /*
+         * See if arg is a valid filename of a save game file.
+         */
+        err_load = NULL;
+        if (maybe_save_file && (fp = fopen(arg, "r")) != NULL) {
+            const game *loadgame;
+
+#ifdef COMBINED
+            /*
+             * Find out what kind of game is stored in the save
+             * file; if we're going to end up loading that, it
+             * will have to override our caller's judgment as to
+             * what game to initialise our midend with.
+             */
+            char *id_name;
+            err_load = identify_game(&id_name, savefile_read, fp);
+            if (!err_load) {
+                int i;
+                for (i = 0; i < gamecount; i++)
+                    if (!strcmp(id_name, gamelist[i]->name))
+                        break;
+                if (i == gamecount) {
+                    err_load = "Save file is for a game not supported by"
+                        " this program";
+                } else {
+                    loadgame = gamelist[i];
+                    rewind(fp); /* go back to the start for actual load */
+                }
+            }
+#else
+            loadgame = cgame;
+#endif
+            if (!err_load) {
+                if (me) midend_free(me);
+                me = midend_new(fe, loadgame, &win_drawing, fe);
+                err_load = midend_deserialise(me, savefile_read, fp);
+            }
+        } else {
+            err_load = "Unable to open file";
+        }
+
+        if (maybe_game_id && (!maybe_save_file || err_load)) {
+            /*
+             * See if arg is a game description.
+             */
+            if (me) midend_free(me);
+            me = midend_new(fe, cgame, &win_drawing, fe);
+            err_param = midend_game_id(me, arg);
+            if (!err_param) {
+                midend_new_game(me);
+            } else {
+                if (maybe_save_file) {
+                    *error = snewn(256 + strlen(arg) + strlen(err_param) +
+                                   strlen(err_load), char);
+                    sprintf(*error, "Supplied argument \"%s\" is neither a"
+                            " game ID (%s) nor a save file (%s)",
+                            arg, err_param, err_load);
+                } else {
+                    *error = dupstr(err_param);
+                }
+                midend_free(me);
+                sfree(fe);
+                return NULL;
+            }
+        } else if (err_load) {
+            *error = dupstr(err_load);
+            midend_free(me);
+            sfree(fe);
+            return NULL;
+        }
+    }
+
+    return me;
+}
+
+/*
+ * Populate a frontend structure with a new midend structure, and
+ * create any window furniture that it needs.
+ *
+ * Previously-allocated memory and window furniture will be freed by
+ * this function.
+ *
+ */
+static int fe_set_midend(frontend *fe, midend *me)
+{
+    int x, y;
+    RECT r;
+
+    if (fe->me) midend_free(fe->me);
+    fe->me = me;
+    fe->game = midend_which_game(fe->me);
+
+    {
+        int i, ncolours;
+        float *colours;
+
+        colours = midend_colours(fe->me, &ncolours);
+
+        if (fe->colours) sfree(fe->colours);
+        if (fe->brushes) sfree(fe->brushes);
+        if (fe->pens) sfree(fe->pens);
+
+        fe->colours = snewn(ncolours, COLORREF);
+        fe->brushes = snewn(ncolours, HBRUSH);
+        fe->pens = snewn(ncolours, HPEN);
+
+        for (i = 0; i < ncolours; i++) {
+            fe->colours[i] = RGB(255 * colours[i*3+0],
+                                 255 * colours[i*3+1],
+                                 255 * colours[i*3+2]);
+            fe->brushes[i] = CreateSolidBrush(fe->colours[i]);
+            fe->pens[i] = CreatePen(PS_SOLID, 1, fe->colours[i]);
+        }
+        sfree(colours);
+    }
+
+    if (fe->statusbar)
+        DestroyWindow(fe->statusbar);
+    if (midend_wants_statusbar(fe->me)) {
+        fe->statusbar = CreateWindowEx(0, STATUSCLASSNAME,
+                                       TEXT(DEFAULT_STATUSBAR_TEXT),
+                                       WS_CHILD | WS_VISIBLE,
+                                       0, 0, 0, 0, /* status bar does these */
+                                       NULL, NULL, fe->inst, NULL);
+    } else
+        fe->statusbar = NULL;
+
+    get_max_puzzle_size(fe, &x, &y);
+    midend_size(fe->me, &x, &y, FALSE);
+
+    r.left = r.top = 0;
+    r.right = x;
+    r.bottom = y;
+    AdjustWindowRectEx(&r, WINFLAGS, TRUE, 0);
+
+#ifdef _WIN32_WCE
+    if (fe->numpad)
+        DestroyWindow(fe->numpad);
+    if (fe->game->flags & REQUIRE_NUMPAD)
+    {
+        fe->numpad = CreateToolbarEx (fe->hwnd,
+                                      WS_VISIBLE | WS_CHILD | CCS_NOPARENTALIGN | TBSTYLE_FLAT,
+                                      0, 10, fe->inst, IDR_PADTOOLBAR,
+                                      tbNumpadButtons, sizeof (tbNumpadButtons) / sizeof (TBBUTTON),
+                                      0, 0, 14, 15, sizeof (TBBUTTON));
+        GetWindowRect(fe->numpad, &rcTB);
+        GetClientRect(fe->hwnd, &rcClient);
+        MoveWindow(fe->numpad, 
+                   0, 
+                   rcClient.bottom - (rcTB.bottom - rcTB.top) - 1,
+                   rcClient.right,
+                   rcTB.bottom - rcTB.top,
+                   FALSE);
+        SendMessage(fe->numpad, TB_SETINDENT, (rcClient.right - (10 * 21)) / 2, 0);
+    }
+    else {
+        fe->numpad = NULL;
+    }
+    MultiByteToWideChar (CP_ACP, 0, fe->game->name, -1, wGameName, 256);
+    SetWindowText(fe->hwnd, wGameName);
+#else
+    SetWindowText(fe->hwnd, fe->game->name);
+#endif
+
+    if (fe->statusbar)
+        DestroyWindow(fe->statusbar);
+    if (midend_wants_statusbar(fe->me)) {
+        RECT sr;
+        fe->statusbar = CreateWindowEx(0, STATUSCLASSNAME, TEXT("ooh"),
+                                       WS_CHILD | WS_VISIBLE,
+                                       0, 0, 0, 0, /* status bar does these */
+                                       fe->hwnd, NULL, fe->inst, NULL);
+#ifdef _WIN32_WCE
+        /* Flat status bar looks better on the Pocket PC */
+        SendMessage(fe->statusbar, SB_SIMPLE, (WPARAM) TRUE, 0);
+        SendMessage(fe->statusbar, SB_SETTEXT,
+                                (WPARAM) 255 | SBT_NOBORDERS,
+                                (LPARAM) L"");
+#endif
+
+        /*
+         * Now resize the window to take account of the status bar.
+         */
+        GetWindowRect(fe->statusbar, &sr);
+        GetWindowRect(fe->hwnd, &r);
+#ifndef _WIN32_WCE
+        SetWindowPos(fe->hwnd, NULL, 0, 0, r.right - r.left,
+                     r.bottom - r.top + sr.bottom - sr.top,
+                     SWP_NOMOVE | SWP_NOZORDER);
+#endif
+    } else {
+        fe->statusbar = NULL;
+    }
+
+    {
+        HMENU oldmenu = GetMenu(fe->hwnd);
+
+#ifndef _WIN32_WCE
+        HMENU bar = CreateMenu();
+        HMENU menu = CreateMenu();
+        RECT menusize;
+
+        AppendMenu(bar, MF_ENABLED|MF_POPUP, (UINT)menu, "&Game");
+#else
+        HMENU menu = SHGetSubMenu(SHFindMenuBar(fe->hwnd), ID_GAME);
+        DeleteMenu(menu, 0, MF_BYPOSITION);
+#endif
+        fe->gamemenu = menu;
+        AppendMenu(menu, MF_ENABLED, IDM_NEW, TEXT("&New"));
+        AppendMenu(menu, MF_ENABLED, IDM_RESTART, TEXT("&Restart"));
+#ifndef _WIN32_WCE
+        /* ...here I run out of sensible accelerator characters. */
+        AppendMenu(menu, MF_ENABLED, IDM_DESC, TEXT("Speci&fic..."));
+        AppendMenu(menu, MF_ENABLED, IDM_SEED, TEXT("Rando&m Seed..."));
+#endif
+
+        if (fe->presets)
+            sfree(fe->presets);
+        if ((fe->npresets = midend_num_presets(fe->me)) > 0 ||
+            fe->game->can_configure) {
+            int i;
+#ifndef _WIN32_WCE
+            HMENU sub = CreateMenu();
+
+            AppendMenu(bar, MF_ENABLED|MF_POPUP, (UINT)sub, "&Type");
+#else
+            HMENU sub = SHGetSubMenu(SHFindMenuBar(fe->hwnd), ID_TYPE);
+            DeleteMenu(sub, 0, MF_BYPOSITION);
+#endif
+            fe->presets = snewn(fe->npresets, game_params *);
+
+            for (i = 0; i < fe->npresets; i++) {
+                char *name;
+#ifdef _WIN32_WCE
+                TCHAR wName[255];
+#endif
+
+                midend_fetch_preset(fe->me, i, &name, &fe->presets[i]);
+
+                /*
+                 * FIXME: we ought to go through and do something
+                 * with ampersands here.
+                 */
+
+#ifndef _WIN32_WCE
+                AppendMenu(sub, MF_ENABLED, IDM_PRESETS + 0x10 * i, name);
+#else
+                MultiByteToWideChar (CP_ACP, 0, name, -1, wName, 255);
+                AppendMenu(sub, MF_ENABLED, IDM_PRESETS + 0x10 * i, wName);
+#endif
+            }
+            if (fe->game->can_configure) {
+                AppendMenu(sub, MF_ENABLED, IDM_CONFIG, TEXT("&Custom..."));
+            }
+
+            fe->typemenu = sub;
+        } else {
+            fe->typemenu = INVALID_HANDLE_VALUE;
+            fe->presets = NULL;
+        }
+
+#ifdef COMBINED
+#ifdef _WIN32_WCE
+#error Windows CE does not support COMBINED build.
+#endif
+        {
+            HMENU games = CreateMenu();
+            int i;
+
+            AppendMenu(menu, MF_SEPARATOR, 0, 0);
+            AppendMenu(menu, MF_ENABLED|MF_POPUP, (UINT)games, "&Other");
+            for (i = 0; i < gamecount; i++) {
+                if (strcmp(gamelist[i]->name, fe->game->name) != 0) {
+                    /* only include those games that aren't the same as the
+                     * game we're currently playing. */
+                    AppendMenu(games, MF_ENABLED, IDM_GAMES + i, gamelist[i]->name);
+                }
+            }
+        }
+#endif
+
+        AppendMenu(menu, MF_SEPARATOR, 0, 0);
+#ifndef _WIN32_WCE
+        AppendMenu(menu, MF_ENABLED, IDM_LOAD, TEXT("&Load..."));
+        AppendMenu(menu, MF_ENABLED, IDM_SAVE, TEXT("&Save..."));
+        AppendMenu(menu, MF_SEPARATOR, 0, 0);
+        if (fe->game->can_print) {
+            AppendMenu(menu, MF_ENABLED, IDM_PRINT, TEXT("&Print..."));
+            AppendMenu(menu, MF_SEPARATOR, 0, 0);
+        }
+#endif
+        AppendMenu(menu, MF_ENABLED, IDM_UNDO, TEXT("Undo"));
+        AppendMenu(menu, MF_ENABLED, IDM_REDO, TEXT("Redo"));
+#ifndef _WIN32_WCE
+        if (fe->game->can_format_as_text_ever) {
+            AppendMenu(menu, MF_SEPARATOR, 0, 0);
+            AppendMenu(menu, MF_ENABLED, IDM_COPY, TEXT("&Copy"));
+        }
+#endif
+        if (fe->game->can_solve) {
+            AppendMenu(menu, MF_SEPARATOR, 0, 0);
+            AppendMenu(menu, MF_ENABLED, IDM_SOLVE, TEXT("Sol&ve"));
+        }
+        AppendMenu(menu, MF_SEPARATOR, 0, 0);
+#ifndef _WIN32_WCE
+        AppendMenu(menu, MF_ENABLED, IDM_QUIT, TEXT("E&xit"));
+        menu = CreateMenu();
+        AppendMenu(bar, MF_ENABLED|MF_POPUP, (UINT)menu, TEXT("&Help"));
+#endif
+        AppendMenu(menu, MF_ENABLED, IDM_ABOUT, TEXT("&About"));
+#ifndef _WIN32_WCE
+        if (help_type != NONE) {
+            char *item;
+            AppendMenu(menu, MF_SEPARATOR, 0, 0);
+            AppendMenu(menu, MF_ENABLED, IDM_HELPC, TEXT("&Contents"));
+            assert(fe->game->name);
+            item = snewn(10+strlen(fe->game->name), char); /*ick*/
+            sprintf(item, "&Help on %s", fe->game->name);
+            AppendMenu(menu, MF_ENABLED, IDM_GAMEHELP, item);
+            sfree(item);
+        }
+        DestroyMenu(oldmenu);
+        SetMenu(fe->hwnd, bar);
+        get_menu_size(fe->hwnd, &menusize);
+        fe->xmin = (menusize.right - menusize.left) + 25;
+#endif
+    }
+
+    if (fe->bitmap) DeleteObject(fe->bitmap);
+    fe->bitmap = NULL;
+    new_game_size(fe, fe->puzz_scale); /* initialises fe->bitmap */
+
+    return 0;
+}
+
+static void show_window(frontend *fe)
+{
+    ShowWindow(fe->hwnd, SW_SHOWNORMAL);
+    SetForegroundWindow(fe->hwnd);
+
+    update_type_menu_tick(fe);
+    update_copy_menu_greying(fe);
+
+    midend_redraw(fe->me);
+}
+
+#ifdef _WIN32_WCE
+static HFONT dialog_title_font()
+{
+    static HFONT hf = NULL;
+    LOGFONT lf;
+
+    if (hf)
+        return hf;
+
+    memset (&lf, 0, sizeof(LOGFONT));
+    lf.lfHeight = -11; /* - ((8 * GetDeviceCaps(hdc, LOGPIXELSY)) / 72) */
+    lf.lfWeight = FW_BOLD;
+    wcscpy(lf.lfFaceName, TEXT("Tahoma"));
+
+    return hf = CreateFontIndirect(&lf);
+}
+
+static void make_dialog_full_screen(HWND hwnd)
+{
+    SHINITDLGINFO shidi;
+
+    /* Make dialog full screen */
+    shidi.dwMask = SHIDIM_FLAGS;
+    shidi.dwFlags = SHIDIF_DONEBUTTON | SHIDIF_SIZEDLGFULLSCREEN |
+                    SHIDIF_EMPTYMENU;
+    shidi.hDlg = hwnd;
+    SHInitDialog(&shidi);
+}
+#endif
+
+static int CALLBACK AboutDlgProc(HWND hwnd, UINT msg,
+                                 WPARAM wParam, LPARAM lParam)
+{
+    frontend *fe = (frontend *)GetWindowLong(hwnd, GWL_USERDATA);
+
+    switch (msg) {
+      case WM_INITDIALOG:
+#ifdef _WIN32_WCE
+        {
+            char title[256];
+
+            make_dialog_full_screen(hwnd);
+
+            sprintf(title, "About %.250s", fe->game->name);
+            SetDlgItemTextA(hwnd, IDC_ABOUT_CAPTION, title);
+
+            SendDlgItemMessage(hwnd, IDC_ABOUT_CAPTION, WM_SETFONT,
+                               (WPARAM) dialog_title_font(), 0);
+
+            SetDlgItemTextA(hwnd, IDC_ABOUT_GAME, fe->game->name);
+            SetDlgItemTextA(hwnd, IDC_ABOUT_VERSION, ver);
+        }
+#endif
+        return TRUE;
+
+      case WM_COMMAND:
+        if (LOWORD(wParam) == IDOK)
+#ifdef _WIN32_WCE
+            EndDialog(hwnd, 1);
+#else
+            fe->dlg_done = 1;
+#endif
+        return 0;
+
+      case WM_CLOSE:
+#ifdef _WIN32_WCE
+        EndDialog(hwnd, 1);
+#else
+        fe->dlg_done = 1;
+#endif
+        return 0;
+    }
+
+    return 0;
+}
+
+/*
+ * Wrappers on midend_{get,set}_config, which extend the CFG_*
+ * enumeration to add CFG_PRINT.
+ */
+static config_item *frontend_get_config(frontend *fe, int which,
+                                        char **wintitle)
+{
+    if (which < CFG_FRONTEND_SPECIFIC) {
+        return midend_get_config(fe->me, which, wintitle);
+    } else if (which == CFG_PRINT) {
+        config_item *ret;
+        int i;
+
+        *wintitle = snewn(40 + strlen(fe->game->name), char);
+        sprintf(*wintitle, "%s print setup", fe->game->name);
+
+        ret = snewn(8, config_item);
+
+        i = 0;
+
+        ret[i].name = "Number of puzzles to print";
+        ret[i].type = C_STRING;
+        ret[i].sval = dupstr("1");
+        ret[i].ival = 0;
+        i++;
+
+        ret[i].name = "Number of puzzles across the page";
+        ret[i].type = C_STRING;
+        ret[i].sval = dupstr("1");
+        ret[i].ival = 0;
+        i++;
+
+        ret[i].name = "Number of puzzles down the page";
+        ret[i].type = C_STRING;
+        ret[i].sval = dupstr("1");
+        ret[i].ival = 0;
+        i++;
+
+        ret[i].name = "Percentage of standard size";
+        ret[i].type = C_STRING;
+        ret[i].sval = dupstr("100.0");
+        ret[i].ival = 0;
+        i++;
+
+        ret[i].name = "Include currently shown puzzle";
+        ret[i].type = C_BOOLEAN;
+        ret[i].sval = NULL;
+        ret[i].ival = TRUE;
+        i++;
+
+        ret[i].name = "Print solutions";
+        ret[i].type = C_BOOLEAN;
+        ret[i].sval = NULL;
+        ret[i].ival = FALSE;
+        i++;
+
+        if (fe->game->can_print_in_colour) {
+            ret[i].name = "Print in colour";
+            ret[i].type = C_BOOLEAN;
+            ret[i].sval = NULL;
+            ret[i].ival = FALSE;
+            i++;
+        }
+
+        ret[i].name = NULL;
+        ret[i].type = C_END;
+        ret[i].sval = NULL;
+        ret[i].ival = 0;
+        i++;
+
+        return ret;
+    } else {
+        assert(!"We should never get here");
+        return NULL;
+    }
+}
+
+static char *frontend_set_config(frontend *fe, int which, config_item *cfg)
+{
+    if (which < CFG_FRONTEND_SPECIFIC) {
+        return midend_set_config(fe->me, which, cfg);
+    } else if (which == CFG_PRINT) {
+        if ((fe->printcount = atoi(cfg[0].sval)) <= 0)
+            return "Number of puzzles to print should be at least one";
+        if ((fe->printw = atoi(cfg[1].sval)) <= 0)
+            return "Number of puzzles across the page should be at least one";
+        if ((fe->printh = atoi(cfg[2].sval)) <= 0)
+            return "Number of puzzles down the page should be at least one";
+        if ((fe->printscale = (float)atof(cfg[3].sval)) <= 0)
+            return "Print size should be positive";
+        fe->printcurr = cfg[4].ival;
+        fe->printsolns = cfg[5].ival;
+        fe->printcolour = fe->game->can_print_in_colour && cfg[6].ival;
+        return NULL;
+    } else {
+        assert(!"We should never get here");
+        return "Internal error";
+    }
+}
+
+#ifdef _WIN32_WCE
+/* Separate version of mkctrl function for the Pocket PC. */
+/* Control coordinates should be specified in dialog units. */
+HWND mkctrl(frontend *fe, int x1, int x2, int y1, int y2,
+            LPCTSTR wclass, int wstyle,
+            int exstyle, const char *wtext, int wid)
+{
+    RECT rc;
+    TCHAR wwtext[256];
+
+    /* Convert dialog units into pixels */
+    rc.left = x1;  rc.right  = x2;
+    rc.top  = y1;  rc.bottom = y2;
+    MapDialogRect(fe->cfgbox, &rc);
+
+    MultiByteToWideChar (CP_ACP, 0, wtext, -1, wwtext, 256);
+
+    return CreateWindowEx(exstyle, wclass, wwtext,
+                          wstyle | WS_CHILD | WS_VISIBLE,
+                          rc.left, rc.top,
+                          rc.right - rc.left, rc.bottom - rc.top,
+                          fe->cfgbox, (HMENU) wid, fe->inst, NULL);
+}
+
+static void create_config_controls(frontend * fe)
+{
+    int id, nctrls;
+    int col1l, col1r, col2l, col2r, y;
+    config_item *i;
+    struct cfg_aux *j;
+    HWND ctl;
+
+    /* Control placement done in dialog units */
+    col1l = 4;   col1r = 96;   /* Label column */
+    col2l = 100; col2r = 154;  /* Input column (edit boxes and combo boxes) */
+
+    /*
+     * Count the controls so we can allocate cfgaux.
+     */
+    for (nctrls = 0, i = fe->cfg; i->type != C_END; i++)
+        nctrls++;
+    fe->cfgaux = snewn(nctrls, struct cfg_aux);
+
+    id = 1000;
+    y = 22; /* Leave some room for the dialog title */
+    for (i = fe->cfg, j = fe->cfgaux; i->type != C_END; i++, j++) {
+        switch (i->type) {
+          case C_STRING:
+            /*
+             * Edit box with a label beside it.
+             */
+            mkctrl(fe, col1l, col1r, y + 1, y + 11,
+                   TEXT("Static"), SS_LEFTNOWORDWRAP, 0, i->name, id++);
+            mkctrl(fe, col2l, col2r, y, y + 12,
+                   TEXT("EDIT"), WS_BORDER | WS_TABSTOP | ES_AUTOHSCROLL,
+                   0, "", (j->ctlid = id++));
+            SetDlgItemTextA(fe->cfgbox, j->ctlid, i->sval);
+            break;
+
+          case C_BOOLEAN:
+            /*
+             * Simple checkbox.
+             */
+            mkctrl(fe, col1l, col2r, y + 1, y + 11, TEXT("BUTTON"),
+                   BS_NOTIFY | BS_AUTOCHECKBOX | WS_TABSTOP,
+                   0, i->name, (j->ctlid = id++));
+            CheckDlgButton(fe->cfgbox, j->ctlid, (i->ival != 0));
+            break;
+
+          case C_CHOICES:
+            /*
+             * Drop-down list with a label beside it.
+             */
+            mkctrl(fe, col1l, col1r, y + 1, y + 11,
+                   TEXT("STATIC"), SS_LEFTNOWORDWRAP, 0, i->name, id++);
+            ctl = mkctrl(fe, col2l, col2r, y, y + 48,
+                         TEXT("COMBOBOX"), WS_BORDER | WS_TABSTOP |
+                         CBS_DROPDOWNLIST | CBS_HASSTRINGS,
+                         0, "", (j->ctlid = id++));
+            {
+                char c, *p, *q, *str;
+
+                p = i->sval;
+                c = *p++;
+                while (*p) {
+                    q = p;
+                    while (*q && *q != c) q++;
+                    str = snewn(q-p+1, char);
+                    strncpy(str, p, q-p);
+                    str[q-p] = '\0';
+                    {
+                        TCHAR ws[50];
+                        MultiByteToWideChar (CP_ACP, 0, str, -1, ws, 50);
+                        SendMessage(ctl, CB_ADDSTRING, 0, (LPARAM)ws);
+                    }
+                    
+                    sfree(str);
+                    if (*q) q++;
+                    p = q;
+                }
+            }
+            SendMessage(ctl, CB_SETCURSEL, i->ival, 0);
+            break;
+        }
+
+        y += 15;
+    }
+
+}
+#endif
+
+static int CALLBACK ConfigDlgProc(HWND hwnd, UINT msg,
+                                  WPARAM wParam, LPARAM lParam)
+{
+    frontend *fe = (frontend *)GetWindowLong(hwnd, GWL_USERDATA);
+    config_item *i;
+    struct cfg_aux *j;
+
+    switch (msg) {
+      case WM_INITDIALOG:
+#ifdef _WIN32_WCE
+        {
+            char *title;
+
+            fe = (frontend *) lParam;
+            SetWindowLong(hwnd, GWL_USERDATA, lParam);
+            fe->cfgbox = hwnd;
+
+            fe->cfg = frontend_get_config(fe, fe->cfg_which, &title);
+
+            make_dialog_full_screen(hwnd);
+
+            SetDlgItemTextA(hwnd, IDC_CONFIG_CAPTION, title);
+            SendDlgItemMessage(hwnd, IDC_CONFIG_CAPTION, WM_SETFONT,
+                               (WPARAM) dialog_title_font(), 0);
+
+            create_config_controls(fe);
+        }
+#endif
+        return TRUE;
+
+      case WM_COMMAND:
+        /*
+         * OK and Cancel are special cases.
+         */
+        if ((LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)) {
+            if (LOWORD(wParam) == IDOK) {
+                char *err = frontend_set_config(fe, fe->cfg_which, fe->cfg);
+
+                if (err) {
+                    MessageBox(hwnd, err, "Validation error",
+                               MB_ICONERROR | MB_OK);
+                } else {
+#ifdef _WIN32_WCE
+                    EndDialog(hwnd, 2);
+#else
+                    fe->dlg_done = 2;
+#endif
+                }
+            } else {
+#ifdef _WIN32_WCE
+                EndDialog(hwnd, 1);
+#else
+                fe->dlg_done = 1;
+#endif
+            }
+            return 0;
+        }
+
+        /*
+         * First find the control whose id this is.
+         */
+        for (i = fe->cfg, j = fe->cfgaux; i->type != C_END; i++, j++) {
+            if (j->ctlid == LOWORD(wParam))
+                break;
+        }
+        if (i->type == C_END)
+            return 0;                  /* not our problem */
+
+        if (i->type == C_STRING && HIWORD(wParam) == EN_CHANGE) {
+            char buffer[4096];
+#ifdef _WIN32_WCE
+            TCHAR wBuffer[4096];
+            GetDlgItemText(fe->cfgbox, j->ctlid, wBuffer, 4096);
+            WideCharToMultiByte(CP_ACP, 0, wBuffer, -1, buffer, 4096, NULL, NULL);
+#else
+            GetDlgItemText(fe->cfgbox, j->ctlid, buffer, lenof(buffer));
+#endif
+            buffer[lenof(buffer)-1] = '\0';
+            sfree(i->sval);
+            i->sval = dupstr(buffer);
+        } else if (i->type == C_BOOLEAN && 
+                   (HIWORD(wParam) == BN_CLICKED ||
+                    HIWORD(wParam) == BN_DBLCLK)) {
+            i->ival = IsDlgButtonChecked(fe->cfgbox, j->ctlid);
+        } else if (i->type == C_CHOICES &&
+                   HIWORD(wParam) == CBN_SELCHANGE) {
+            i->ival = SendDlgItemMessage(fe->cfgbox, j->ctlid,
+                                         CB_GETCURSEL, 0, 0);
+        }
+
+        return 0;
+
+      case WM_CLOSE:
+        fe->dlg_done = 1;
+        return 0;
+    }
+
+    return 0;
+}
+
+#ifndef _WIN32_WCE
+HWND mkctrl(frontend *fe, int x1, int x2, int y1, int y2,
+            char *wclass, int wstyle,
+            int exstyle, const char *wtext, int wid)
+{
+    HWND ret;
+    ret = CreateWindowEx(exstyle, wclass, wtext,
+                         wstyle | WS_CHILD | WS_VISIBLE, x1, y1, x2-x1, y2-y1,
+                         fe->cfgbox, (HMENU) wid, fe->inst, NULL);
+    SendMessage(ret, WM_SETFONT, (WPARAM)fe->cfgfont, MAKELPARAM(TRUE, 0));
+    return ret;
+}
+#endif
+
+static void about(frontend *fe)
+{
+#ifdef _WIN32_WCE
+    DialogBox(fe->inst, MAKEINTRESOURCE(IDD_ABOUT), fe->hwnd, AboutDlgProc);
+#else
+    int i;
+    WNDCLASS wc;
+    MSG msg;
+    TEXTMETRIC tm;
+    HDC hdc;
+    HFONT oldfont;
+    SIZE size;
+    int gm, id;
+    int winwidth, winheight, y;
+    int height, width, maxwid;
+    const char *strings[16];
+    int lengths[16];
+    int nstrings = 0;
+    char titlebuf[512];
+
+    sprintf(titlebuf, "About %.250s", fe->game->name);
+
+    strings[nstrings++] = fe->game->name;
+    strings[nstrings++] = "from Simon Tatham's Portable Puzzle Collection";
+    strings[nstrings++] = ver;
+
+    wc.style = CS_DBLCLKS | CS_SAVEBITS;
+    wc.lpfnWndProc = DefDlgProc;
+    wc.cbClsExtra = 0;
+    wc.cbWndExtra = DLGWINDOWEXTRA + 8;
+    wc.hInstance = fe->inst;
+    wc.hIcon = NULL;
+    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
+    wc.hbrBackground = (HBRUSH) (COLOR_BACKGROUND +1);
+    wc.lpszMenuName = NULL;
+    wc.lpszClassName = "GameAboutBox";
+    RegisterClass(&wc);
+
+    hdc = GetDC(fe->hwnd);
+    SetMapMode(hdc, MM_TEXT);
+
+    fe->dlg_done = FALSE;
+
+    fe->cfgfont = CreateFont(-MulDiv(8, GetDeviceCaps(hdc, LOGPIXELSY), 72),
+                             0, 0, 0, 0,
+                             FALSE, FALSE, FALSE, DEFAULT_CHARSET,
+                             OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
+                             DEFAULT_QUALITY,
+                             FF_SWISS,
+                             "MS Shell Dlg");
+
+    oldfont = SelectObject(hdc, fe->cfgfont);
+    if (GetTextMetrics(hdc, &tm)) {
+        height = tm.tmAscent + tm.tmDescent;
+        width = tm.tmAveCharWidth;
+    } else {
+        height = width = 30;
+    }
+
+    /*
+     * Figure out the layout of the About box by measuring the
+     * length of each piece of text.
+     */
+    maxwid = 0;
+    winheight = height/2;
+
+    for (i = 0; i < nstrings; i++) {
+        if (GetTextExtentPoint32(hdc, strings[i], strlen(strings[i]), &size))
+            lengths[i] = size.cx;
+        else
+            lengths[i] = 0;            /* *shrug* */
+        if (maxwid < lengths[i])
+            maxwid = lengths[i];
+        winheight += height * 3 / 2 + (height / 2);
+    }
+
+    winheight += height + height * 7 / 4;      /* OK button */
+    winwidth = maxwid + 4*width;
+
+    SelectObject(hdc, oldfont);
+    ReleaseDC(fe->hwnd, hdc);
+
+    /*
+     * Create the dialog, now that we know its size.
+     */
+    {
+        RECT r, r2;
+
+        r.left = r.top = 0;
+        r.right = winwidth;
+        r.bottom = winheight;
+
+        AdjustWindowRectEx(&r, (WS_OVERLAPPEDWINDOW /*|
+                                DS_MODALFRAME | WS_POPUP | WS_VISIBLE |
+                                WS_CAPTION | WS_SYSMENU*/) &~
+                           (WS_MAXIMIZEBOX | WS_OVERLAPPED),
+                           FALSE, 0);
+
+        /*
+         * Centre the dialog on its parent window.
+         */
+        r.right -= r.left;
+        r.bottom -= r.top;
+        GetWindowRect(fe->hwnd, &r2);
+        r.left = (r2.left + r2.right - r.right) / 2;
+        r.top = (r2.top + r2.bottom - r.bottom) / 2;
+        r.right += r.left;
+        r.bottom += r.top;
+
+        fe->cfgbox = CreateWindowEx(0, wc.lpszClassName, titlebuf,
+                                    DS_MODALFRAME | WS_POPUP | WS_VISIBLE |
+                                    WS_CAPTION | WS_SYSMENU,
+                                    r.left, r.top,
+                                    r.right-r.left, r.bottom-r.top,
+                                    fe->hwnd, NULL, fe->inst, NULL);
+    }
+
+    SendMessage(fe->cfgbox, WM_SETFONT, (WPARAM)fe->cfgfont, FALSE);
+
+    SetWindowLong(fe->cfgbox, GWL_USERDATA, (LONG)fe);
+    SetWindowLong(fe->cfgbox, DWL_DLGPROC, (LONG)AboutDlgProc);
+
+    id = 1000;
+    y = height/2;
+    for (i = 0; i < nstrings; i++) {
+        int border = width*2 + (maxwid - lengths[i]) / 2;
+        mkctrl(fe, border, border+lengths[i], y+height*1/8, y+height*9/8,
+               "Static", 0, 0, strings[i], id++);
+        y += height*3/2;
+
+        assert(y < winheight);
+        y += height/2;
+    }
+
+    y += height/2;                     /* extra space before OK */
+    mkctrl(fe, width*2, maxwid+width*2, y, y+height*7/4, "BUTTON",
+           BS_PUSHBUTTON | WS_TABSTOP | BS_DEFPUSHBUTTON, 0,
+           "OK", IDOK);
+
+    SendMessage(fe->cfgbox, WM_INITDIALOG, 0, 0);
+
+    EnableWindow(fe->hwnd, FALSE);
+    ShowWindow(fe->cfgbox, SW_SHOWNORMAL);
+    while ((gm=GetMessage(&msg, NULL, 0, 0)) > 0) {
+        if (!IsDialogMessage(fe->cfgbox, &msg))
+            DispatchMessage(&msg);
+        if (fe->dlg_done)
+            break;
+    }
+    EnableWindow(fe->hwnd, TRUE);
+    SetForegroundWindow(fe->hwnd);
+    DestroyWindow(fe->cfgbox);
+    DeleteObject(fe->cfgfont);
+#endif
+}
+
+static int get_config(frontend *fe, int which)
+{
+#ifdef _WIN32_WCE
+    fe->cfg_which = which;
+
+    return DialogBoxParam(fe->inst,
+                          MAKEINTRESOURCE(IDD_CONFIG),
+                          fe->hwnd, ConfigDlgProc,
+                          (LPARAM) fe) == 2;
+#else
+    config_item *i;
+    struct cfg_aux *j;
+    char *title;
+    WNDCLASS wc;
+    MSG msg;
+    TEXTMETRIC tm;
+    HDC hdc;
+    HFONT oldfont;
+    SIZE size;
+    HWND ctl;
+    int gm, id, nctrls;
+    int winwidth, winheight, col1l, col1r, col2l, col2r, y;
+    int height, width, maxlabel, maxcheckbox;
+
+    wc.style = CS_DBLCLKS | CS_SAVEBITS;
+    wc.lpfnWndProc = DefDlgProc;
+    wc.cbClsExtra = 0;
+    wc.cbWndExtra = DLGWINDOWEXTRA + 8;
+    wc.hInstance = fe->inst;
+    wc.hIcon = NULL;
+    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
+    wc.hbrBackground = (HBRUSH) (COLOR_BACKGROUND +1);
+    wc.lpszMenuName = NULL;
+    wc.lpszClassName = "GameConfigBox";
+    RegisterClass(&wc);
+
+    hdc = GetDC(fe->hwnd);
+    SetMapMode(hdc, MM_TEXT);
+
+    fe->dlg_done = FALSE;
+
+    fe->cfgfont = CreateFont(-MulDiv(8, GetDeviceCaps(hdc, LOGPIXELSY), 72),
+                             0, 0, 0, 0,
+                             FALSE, FALSE, FALSE, DEFAULT_CHARSET,
+                             OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
+                             DEFAULT_QUALITY,
+                             FF_SWISS,
+                             "MS Shell Dlg");
+
+    oldfont = SelectObject(hdc, fe->cfgfont);
+    if (GetTextMetrics(hdc, &tm)) {
+        height = tm.tmAscent + tm.tmDescent;
+        width = tm.tmAveCharWidth;
+    } else {
+        height = width = 30;
+    }
+
+    fe->cfg = frontend_get_config(fe, which, &title);
+    fe->cfg_which = which;
+
+    /*
+     * Figure out the layout of the config box by measuring the
+     * length of each piece of text.
+     */
+    maxlabel = maxcheckbox = 0;
+    winheight = height/2;
+
+    for (i = fe->cfg; i->type != C_END; i++) {
+        switch (i->type) {
+          case C_STRING:
+          case C_CHOICES:
+            /*
+             * Both these control types have a label filling only
+             * the left-hand column of the box.
+             */
+            if (GetTextExtentPoint32(hdc, i->name, strlen(i->name), &size) &&
+                maxlabel < size.cx)
+                maxlabel = size.cx;
+            winheight += height * 3 / 2 + (height / 2);
+            break;
+
+          case C_BOOLEAN:
+            /*
+             * Checkboxes take up the whole of the box width.
+             */
+            if (GetTextExtentPoint32(hdc, i->name, strlen(i->name), &size) &&
+                maxcheckbox < size.cx)
+                maxcheckbox = size.cx;
+            winheight += height + (height / 2);
+            break;
+        }
+    }
+
+    winheight += height + height * 7 / 4;      /* OK / Cancel buttons */
+
+    col1l = 2*width;
+    col1r = col1l + maxlabel;
+    col2l = col1r + 2*width;
+    col2r = col2l + 30*width;
+    if (col2r < col1l+2*height+maxcheckbox)
+        col2r = col1l+2*height+maxcheckbox;
+    winwidth = col2r + 2*width;
+
+    SelectObject(hdc, oldfont);
+    ReleaseDC(fe->hwnd, hdc);
+
+    /*
+     * Create the dialog, now that we know its size.
+     */
+    {
+        RECT r, r2;
+
+        r.left = r.top = 0;
+        r.right = winwidth;
+        r.bottom = winheight;
+
+        AdjustWindowRectEx(&r, (WS_OVERLAPPEDWINDOW /*|
+                                DS_MODALFRAME | WS_POPUP | WS_VISIBLE |
+                                WS_CAPTION | WS_SYSMENU*/) &~
+                           (WS_MAXIMIZEBOX | WS_OVERLAPPED),
+                           FALSE, 0);
+
+        /*
+         * Centre the dialog on its parent window.
+         */
+        r.right -= r.left;
+        r.bottom -= r.top;
+        GetWindowRect(fe->hwnd, &r2);
+        r.left = (r2.left + r2.right - r.right) / 2;
+        r.top = (r2.top + r2.bottom - r.bottom) / 2;
+        r.right += r.left;
+        r.bottom += r.top;
+
+        fe->cfgbox = CreateWindowEx(0, wc.lpszClassName, title,
+                                    DS_MODALFRAME | WS_POPUP | WS_VISIBLE |
+                                    WS_CAPTION | WS_SYSMENU,
+                                    r.left, r.top,
+                                    r.right-r.left, r.bottom-r.top,
+                                    fe->hwnd, NULL, fe->inst, NULL);
+        sfree(title);
+    }
+
+    SendMessage(fe->cfgbox, WM_SETFONT, (WPARAM)fe->cfgfont, FALSE);
+
+    SetWindowLong(fe->cfgbox, GWL_USERDATA, (LONG)fe);
+    SetWindowLong(fe->cfgbox, DWL_DLGPROC, (LONG)ConfigDlgProc);
+
+    /*
+     * Count the controls so we can allocate cfgaux.
+     */
+    for (nctrls = 0, i = fe->cfg; i->type != C_END; i++)
+        nctrls++;
+    fe->cfgaux = snewn(nctrls, struct cfg_aux);
+
+    id = 1000;
+    y = height/2;
+    for (i = fe->cfg, j = fe->cfgaux; i->type != C_END; i++, j++) {
+        switch (i->type) {
+          case C_STRING:
+            /*
+             * Edit box with a label beside it.
+             */
+            mkctrl(fe, col1l, col1r, y+height*1/8, y+height*9/8,
+                   "Static", 0, 0, i->name, id++);
+            ctl = mkctrl(fe, col2l, col2r, y, y+height*3/2,
+                         "EDIT", WS_TABSTOP | ES_AUTOHSCROLL,
+                         WS_EX_CLIENTEDGE, "", (j->ctlid = id++));
+            SetWindowText(ctl, i->sval);
+            y += height*3/2;
+            break;
+
+          case C_BOOLEAN:
+            /*
+             * Simple checkbox.
+             */
+            mkctrl(fe, col1l, col2r, y, y+height, "BUTTON",
+                   BS_NOTIFY | BS_AUTOCHECKBOX | WS_TABSTOP,
+                   0, i->name, (j->ctlid = id++));
+            CheckDlgButton(fe->cfgbox, j->ctlid, (i->ival != 0));
+            y += height;
+            break;
+
+          case C_CHOICES:
+            /*
+             * Drop-down list with a label beside it.
+             */
+            mkctrl(fe, col1l, col1r, y+height*1/8, y+height*9/8,
+                   "STATIC", 0, 0, i->name, id++);
+            ctl = mkctrl(fe, col2l, col2r, y, y+height*41/2,
+                         "COMBOBOX", WS_TABSTOP |
+                         CBS_DROPDOWNLIST | CBS_HASSTRINGS,
+                         WS_EX_CLIENTEDGE, "", (j->ctlid = id++));
+            {
+                char c, *p, *q, *str;
+
+                SendMessage(ctl, CB_RESETCONTENT, 0, 0);
+                p = i->sval;
+                c = *p++;
+                while (*p) {
+                    q = p;
+                    while (*q && *q != c) q++;
+                    str = snewn(q-p+1, char);
+                    strncpy(str, p, q-p);
+                    str[q-p] = '\0';
+                    SendMessage(ctl, CB_ADDSTRING, 0, (LPARAM)str);
+                    sfree(str);
+                    if (*q) q++;
+                    p = q;
+                }
+            }
+
+            SendMessage(ctl, CB_SETCURSEL, i->ival, 0);
+
+            y += height*3/2;
+            break;
+        }
+
+        assert(y < winheight);
+        y += height/2;
+    }
+
+    y += height/2;                     /* extra space before OK and Cancel */
+    mkctrl(fe, col1l, (col1l+col2r)/2-width, y, y+height*7/4, "BUTTON",
+           BS_PUSHBUTTON | WS_TABSTOP | BS_DEFPUSHBUTTON, 0,
+           "OK", IDOK);
+    mkctrl(fe, (col1l+col2r)/2+width, col2r, y, y+height*7/4, "BUTTON",
+           BS_PUSHBUTTON | WS_TABSTOP, 0, "Cancel", IDCANCEL);
+
+    SendMessage(fe->cfgbox, WM_INITDIALOG, 0, 0);
+
+    EnableWindow(fe->hwnd, FALSE);
+    ShowWindow(fe->cfgbox, SW_SHOWNORMAL);
+    while ((gm=GetMessage(&msg, NULL, 0, 0)) > 0) {
+        if (!IsDialogMessage(fe->cfgbox, &msg))
+            DispatchMessage(&msg);
+        if (fe->dlg_done)
+            break;
+    }
+    EnableWindow(fe->hwnd, TRUE);
+    SetForegroundWindow(fe->hwnd);
+    DestroyWindow(fe->cfgbox);
+    DeleteObject(fe->cfgfont);
+
+    free_cfg(fe->cfg);
+    sfree(fe->cfgaux);
+
+    return (fe->dlg_done == 2);
+#endif
+}
+
+#ifdef _WIN32_WCE
+static void calculate_bitmap_position(frontend *fe, int x, int y)
+{
+    /* Pocket PC - center the game in the full screen window */
+    int yMargin;
+    RECT rcClient;
+
+    GetClientRect(fe->hwnd, &rcClient);
+    fe->bitmapPosition.left = (rcClient.right  - x) / 2;
+    yMargin = rcClient.bottom - y;
+
+    if (fe->numpad != NULL) {
+        RECT rcPad;
+        GetWindowRect(fe->numpad, &rcPad);
+        yMargin -= rcPad.bottom - rcPad.top;
+    }
+
+    if (fe->statusbar != NULL) {
+        RECT rcStatus;
+        GetWindowRect(fe->statusbar, &rcStatus);
+        yMargin -= rcStatus.bottom - rcStatus.top;
+    }
+
+    fe->bitmapPosition.top = yMargin / 2;
+
+    fe->bitmapPosition.right  = fe->bitmapPosition.left + x;
+    fe->bitmapPosition.bottom = fe->bitmapPosition.top  + y;
+}
+#else
+static void calculate_bitmap_position(frontend *fe, int x, int y)
+{
+    /* Plain Windows - position the game in the upper-left corner */
+    fe->bitmapPosition.left = 0;
+    fe->bitmapPosition.top = 0;
+    fe->bitmapPosition.right  = fe->bitmapPosition.left + x;
+    fe->bitmapPosition.bottom = fe->bitmapPosition.top  + y;
+}
+#endif
+
+static void new_bitmap(frontend *fe, int x, int y)
+{
+    HDC hdc;
+
+    if (fe->bitmap) DeleteObject(fe->bitmap);
+
+    hdc = GetDC(fe->hwnd);
+    fe->bitmap = CreateCompatibleBitmap(hdc, x, y);
+    calculate_bitmap_position(fe, x, y);
+    ReleaseDC(fe->hwnd, hdc);
+}
+
+static void new_game_size(frontend *fe, float scale)
+{
+    RECT r, sr;
+    int x, y;
+
+    get_max_puzzle_size(fe, &x, &y);
+    midend_size(fe->me, &x, &y, FALSE);
+
+    if (scale != 1.0) {
+      x = (int)((float)x * fe->puzz_scale);
+      y = (int)((float)y * fe->puzz_scale);
+      midend_size(fe->me, &x, &y, TRUE);
+    }
+    fe->ymin = (fe->xmin * y) / x;
+
+    r.left = r.top = 0;
+    r.right = x;
+    r.bottom = y;
+    AdjustWindowRectEx(&r, WINFLAGS, TRUE, 0);
+
+    if (fe->statusbar != NULL) {
+        GetWindowRect(fe->statusbar, &sr);
+    } else {
+        sr.left = sr.right = sr.top = sr.bottom = 0;
+    }
+#ifndef _WIN32_WCE
+    SetWindowPos(fe->hwnd, NULL, 0, 0,
+                 r.right - r.left,
+                 r.bottom - r.top + sr.bottom - sr.top,
+                 SWP_NOMOVE | SWP_NOZORDER);
+#endif
+
+    check_window_size(fe, &x, &y);
+
+#ifndef _WIN32_WCE
+    if (fe->statusbar != NULL)
+        SetWindowPos(fe->statusbar, NULL, 0, y, x,
+                     sr.bottom - sr.top, SWP_NOZORDER);
+#endif
+
+    new_bitmap(fe, x, y);
+
+#ifdef _WIN32_WCE
+    InvalidateRect(fe->hwnd, NULL, TRUE);
+#endif
+    midend_redraw(fe->me);
+}
+
+/*
+ * Given a proposed new window rect, work out the resulting
+ * difference in client size (from current), and use to try
+ * and resize the puzzle, returning (wx,wy) as the actual
+ * new window size.
+ */
+
+static void adjust_game_size(frontend *fe, RECT *proposed, int isedge,
+                             int *wx_r, int *wy_r)
+{
+    RECT cr, wr;
+    int nx, ny, xdiff, ydiff, wx, wy;
+
+    /* Work out the current window sizing, and thus the
+     * difference in size we're asking for. */
+    GetClientRect(fe->hwnd, &cr);
+    wr = cr;
+    AdjustWindowRectEx(&wr, WINFLAGS, TRUE, 0);
+
+    xdiff = (proposed->right - proposed->left) - (wr.right - wr.left);
+    ydiff = (proposed->bottom - proposed->top) - (wr.bottom - wr.top);
+
+    if (isedge) {
+      /* These next four lines work around the fact that midend_size
+       * is happy to shrink _but not grow_ if you change one dimension
+       * but not the other. */
+      if (xdiff > 0 && ydiff == 0)
+        ydiff = (xdiff * (wr.right - wr.left)) / (wr.bottom - wr.top);
+      if (xdiff == 0 && ydiff > 0)
+        xdiff = (ydiff * (wr.bottom - wr.top)) / (wr.right - wr.left);
+    }
+
+    if (check_window_resize(fe,
+                            (cr.right - cr.left) + xdiff,
+                            (cr.bottom - cr.top) + ydiff,
+                            &nx, &ny, &wx, &wy)) {
+        new_bitmap(fe, nx, ny);
+        midend_force_redraw(fe->me);
+    } else {
+        /* reset size to current window size */
+        wx = wr.right - wr.left;
+        wy = wr.bottom - wr.top;
+    }
+    /* Re-fetch rectangle; size limits mean we might not have
+     * taken it quite to the mouse drag positions. */
+    GetClientRect(fe->hwnd, &cr);
+    adjust_statusbar(fe, &cr);
+
+    *wx_r = wx; *wy_r = wy;
+}
+
+static void update_type_menu_tick(frontend *fe)
+{
+    int total, n, i;
+
+    if (fe->typemenu == INVALID_HANDLE_VALUE)
+        return;
+
+    total = GetMenuItemCount(fe->typemenu);
+    n = midend_which_preset(fe->me);
+    if (n < 0)
+        n = total - 1;                 /* "Custom" item */
+
+    for (i = 0; i < total; i++) {
+        int flag = (i == n ? MF_CHECKED : MF_UNCHECKED);
+        CheckMenuItem(fe->typemenu, i, MF_BYPOSITION | flag);
+    }
+
+    DrawMenuBar(fe->hwnd);
+}
+
+static void update_copy_menu_greying(frontend *fe)
+{
+    UINT enable = (midend_can_format_as_text_now(fe->me) ?
+                   MF_ENABLED : MF_GRAYED);
+    EnableMenuItem(fe->gamemenu, IDM_COPY, MF_BYCOMMAND | enable);
+}
+
+static void new_game_type(frontend *fe)
+{
+    midend_new_game(fe->me);
+    new_game_size(fe, 1.0);
+    update_type_menu_tick(fe);
+    update_copy_menu_greying(fe);
+}
+
+static int is_alt_pressed(void)
+{
+    BYTE keystate[256];
+    int r = GetKeyboardState(keystate);
+    if (!r)
+        return FALSE;
+    if (keystate[VK_MENU] & 0x80)
+        return TRUE;
+    if (keystate[VK_RMENU] & 0x80)
+        return TRUE;
+    return FALSE;
+}
+
+static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
+                                WPARAM wParam, LPARAM lParam)
+{
+    frontend *fe = (frontend *)GetWindowLong(hwnd, GWL_USERDATA);
+    int cmd;
+
+    switch (message) {
+      case WM_CLOSE:
+        DestroyWindow(hwnd);
+        return 0;
+      case WM_COMMAND:
+#ifdef _WIN32_WCE
+        /* Numeric pad sends WM_COMMAND messages */
+        if ((wParam >= IDM_KEYEMUL) && (wParam < IDM_KEYEMUL + 256))
+        {
+            midend_process_key(fe->me, 0, 0, wParam - IDM_KEYEMUL);
+        }
+#endif
+        cmd = wParam & ~0xF;           /* low 4 bits reserved to Windows */
+        switch (cmd) {
+          case IDM_NEW:
+            if (!midend_process_key(fe->me, 0, 0, 'n'))
+                PostQuitMessage(0);
+            break;
+          case IDM_RESTART:
+            midend_restart_game(fe->me);
+            break;
+          case IDM_UNDO:
+            if (!midend_process_key(fe->me, 0, 0, 'u'))
+                PostQuitMessage(0);
+            break;
+          case IDM_REDO:
+            if (!midend_process_key(fe->me, 0, 0, '\x12'))
+                PostQuitMessage(0);
+            break;
+          case IDM_COPY:
+            {
+                char *text = midend_text_format(fe->me);
+                if (text)
+                    write_clip(hwnd, text);
+                else
+                    MessageBeep(MB_ICONWARNING);
+                sfree(text);
+            }
+            break;
+          case IDM_SOLVE:
+            {
+                char *msg = midend_solve(fe->me);
+                if (msg)
+                    MessageBox(hwnd, msg, "Unable to solve",
+                               MB_ICONERROR | MB_OK);
+            }
+            break;
+          case IDM_QUIT:
+            if (!midend_process_key(fe->me, 0, 0, 'q'))
+                PostQuitMessage(0);
+            break;
+          case IDM_CONFIG:
+            if (get_config(fe, CFG_SETTINGS))
+                new_game_type(fe);
+            break;
+          case IDM_SEED:
+            if (get_config(fe, CFG_SEED))
+                new_game_type(fe);
+            break;
+          case IDM_DESC:
+            if (get_config(fe, CFG_DESC))
+                new_game_type(fe);
+            break;
+          case IDM_PRINT:
+            if (get_config(fe, CFG_PRINT))
+                print(fe);
+            break;
+          case IDM_ABOUT:
+            about(fe);
+            break;
+          case IDM_LOAD:
+          case IDM_SAVE:
+            {
+                OPENFILENAME of;
+                char filename[FILENAME_MAX];
+                int ret;
+
+                memset(&of, 0, sizeof(of));
+                of.hwndOwner = hwnd;
+                of.lpstrFilter = "All Files (*.*)\0*\0\0\0";
+                of.lpstrCustomFilter = NULL;
+                of.nFilterIndex = 1;
+                of.lpstrFile = filename;
+                filename[0] = '\0';
+                of.nMaxFile = lenof(filename);
+                of.lpstrFileTitle = NULL;
+                of.lpstrTitle = (cmd == IDM_SAVE ?
+                                 "Enter name of game file to save" :
+                                 "Enter name of saved game file to load");
+                of.Flags = 0;
+#ifdef OPENFILENAME_SIZE_VERSION_400
+                of.lStructSize = OPENFILENAME_SIZE_VERSION_400;
+#else
+                of.lStructSize = sizeof(of);
+#endif
+                of.lpstrInitialDir = NULL;
+
+                if (cmd == IDM_SAVE)
+                    ret = GetSaveFileName(&of);
+                else
+                    ret = GetOpenFileName(&of);
+
+                if (ret) {
+                    if (cmd == IDM_SAVE) {
+                        FILE *fp;
+
+                        if ((fp = fopen(filename, "r")) != NULL) {
+                            char buf[256 + FILENAME_MAX];
+                            fclose(fp);
+                            /* file exists */
+
+                            sprintf(buf, "Are you sure you want to overwrite"
+                                    " the file \"%.*s\"?",
+                                    FILENAME_MAX, filename);
+                            if (MessageBox(hwnd, buf, "Question",
+                                           MB_YESNO | MB_ICONQUESTION)
+                                != IDYES)
+                                break;
+                        }
+
+                        fp = fopen(filename, "w");
+
+                        if (!fp) {
+                            MessageBox(hwnd, "Unable to open save file",
+                                       "Error", MB_ICONERROR | MB_OK);
+                            break;
+                        }
+
+                        midend_serialise(fe->me, savefile_write, fp);
+
+                        fclose(fp);
+                    } else {
+                        FILE *fp = fopen(filename, "r");
+                        char *err = NULL;
+                        midend *me = fe->me;
+#ifdef COMBINED
+                        char *id_name;
+#endif
+
+                        if (!fp) {
+                            MessageBox(hwnd, "Unable to open saved game file",
+                                       "Error", MB_ICONERROR | MB_OK);
+                            break;
+                        }
+
+#ifdef COMBINED
+                        /*
+                         * This save file might be from a different
+                         * game.
+                         */
+                        err = identify_game(&id_name, savefile_read, fp);
+                        if (!err) {
+                            int i;
+                            for (i = 0; i < gamecount; i++)
+                                if (!strcmp(id_name, gamelist[i]->name))
+                                    break;
+                            if (i == gamecount) {
+                                err = "Save file is for a game not "
+                                    "supported by this program";
+                            } else {
+                                me = midend_for_new_game(fe, gamelist[i], NULL,
+                                                         FALSE, FALSE, &err);
+                                rewind(fp); /* for the actual load */
+                            }
+                            sfree(id_name);
+                        }
+#endif
+                        if (!err)
+                            err = midend_deserialise(me, savefile_read, fp);
+
+                        fclose(fp);
+
+                        if (err) {
+                            MessageBox(hwnd, err, "Error", MB_ICONERROR|MB_OK);
+                            break;
+                        }
+
+                        if (fe->me != me)
+                            fe_set_midend(fe, me);
+                        new_game_size(fe, 1.0);
+                    }
+                }
+            }
+
+            break;
+#ifndef _WIN32_WCE
+          case IDM_HELPC:
+            start_help(fe, NULL);
+            break;
+          case IDM_GAMEHELP:
+            assert(help_type != NONE);
+            start_help(fe, help_type == CHM ?
+                       fe->game->htmlhelp_topic : fe->game->winhelp_topic);
+            break;
+#endif
+          default:
+#ifdef COMBINED
+            if (wParam >= IDM_GAMES && wParam < (IDM_GAMES + (WPARAM)gamecount)) {
+                int p = wParam - IDM_GAMES;
+                char *error = NULL;
+                fe_set_midend(fe, midend_for_new_game(fe, gamelist[p], NULL,
+                                                      FALSE, FALSE, &error));
+                sfree(error);
+            } else
+#endif
+            {
+                int p = ((wParam &~ 0xF) - IDM_PRESETS) / 0x10;
+
+                if (p >= 0 && p < fe->npresets) {
+                    midend_set_params(fe->me, fe->presets[p]);
+                    new_game_type(fe);
+                }
+            }
+            break;
+        }
+        break;
+      case WM_DESTROY:
+#ifndef _WIN32_WCE
+        stop_help(fe);
+#endif
+        frontend_free(fe);
+        PostQuitMessage(0);
+        return 0;
+      case WM_PAINT:
+        {
+            PAINTSTRUCT p;
+            HDC hdc, hdc2;
+            HBITMAP prevbm;
+            RECT rcDest;
+
+            hdc = BeginPaint(hwnd, &p);
+            hdc2 = CreateCompatibleDC(hdc);
+            prevbm = SelectObject(hdc2, fe->bitmap);
+#ifdef _WIN32_WCE
+            FillRect(hdc, &(p.rcPaint), (HBRUSH) GetStockObject(WHITE_BRUSH));
+#endif
+            IntersectRect(&rcDest, &(fe->bitmapPosition), &(p.rcPaint));
+            BitBlt(hdc,
+                   rcDest.left, rcDest.top,
+                   rcDest.right - rcDest.left,
+                   rcDest.bottom - rcDest.top,
+                   hdc2,
+                   rcDest.left - fe->bitmapPosition.left,
+                   rcDest.top - fe->bitmapPosition.top,
+                   SRCCOPY);
+            SelectObject(hdc2, prevbm);
+            DeleteDC(hdc2);
+            EndPaint(hwnd, &p);
+        }
+        return 0;
+      case WM_KEYDOWN:
+        {
+            int key = -1;
+            BYTE keystate[256];
+            int r = GetKeyboardState(keystate);
+            int shift = (r && (keystate[VK_SHIFT] & 0x80)) ? MOD_SHFT : 0;
+            int ctrl = (r && (keystate[VK_CONTROL] & 0x80)) ? MOD_CTRL : 0;
+
+            switch (wParam) {
+              case VK_LEFT:
+                if (!(lParam & 0x01000000))
+                    key = MOD_NUM_KEYPAD | '4';
+                else
+                    key = shift | ctrl | CURSOR_LEFT;
+                break;
+              case VK_RIGHT:
+                if (!(lParam & 0x01000000))
+                    key = MOD_NUM_KEYPAD | '6';
+                else
+                    key = shift | ctrl | CURSOR_RIGHT;
+                break;
+              case VK_UP:
+                if (!(lParam & 0x01000000))
+                    key = MOD_NUM_KEYPAD | '8';
+                else
+                    key = shift | ctrl | CURSOR_UP;
+                break;
+              case VK_DOWN:
+                if (!(lParam & 0x01000000))
+                    key = MOD_NUM_KEYPAD | '2';
+                else
+                    key = shift | ctrl | CURSOR_DOWN;
+                break;
+                /*
+                 * Diagonal keys on the numeric keypad.
+                 */
+              case VK_PRIOR:
+                if (!(lParam & 0x01000000)) key = MOD_NUM_KEYPAD | '9';
+                break;
+              case VK_NEXT:
+                if (!(lParam & 0x01000000)) key = MOD_NUM_KEYPAD | '3';
+                break;
+              case VK_HOME:
+                if (!(lParam & 0x01000000)) key = MOD_NUM_KEYPAD | '7';
+                break;
+              case VK_END:
+                if (!(lParam & 0x01000000)) key = MOD_NUM_KEYPAD | '1';
+                break;
+              case VK_INSERT:
+                if (!(lParam & 0x01000000)) key = MOD_NUM_KEYPAD | '0';
+                break;
+              case VK_CLEAR:
+                if (!(lParam & 0x01000000)) key = MOD_NUM_KEYPAD | '5';
+                break;
+                /*
+                 * Numeric keypad keys with Num Lock on.
+                 */
+              case VK_NUMPAD4: key = MOD_NUM_KEYPAD | '4'; break;
+              case VK_NUMPAD6: key = MOD_NUM_KEYPAD | '6'; break;
+              case VK_NUMPAD8: key = MOD_NUM_KEYPAD | '8'; break;
+              case VK_NUMPAD2: key = MOD_NUM_KEYPAD | '2'; break;
+              case VK_NUMPAD5: key = MOD_NUM_KEYPAD | '5'; break;
+              case VK_NUMPAD9: key = MOD_NUM_KEYPAD | '9'; break;
+              case VK_NUMPAD3: key = MOD_NUM_KEYPAD | '3'; break;
+              case VK_NUMPAD7: key = MOD_NUM_KEYPAD | '7'; break;
+              case VK_NUMPAD1: key = MOD_NUM_KEYPAD | '1'; break;
+              case VK_NUMPAD0: key = MOD_NUM_KEYPAD | '0'; break;
+            }
+
+            if (key != -1) {
+                if (!midend_process_key(fe->me, 0, 0, key))
+                    PostQuitMessage(0);
+            } else {
+                MSG m;
+                m.hwnd = hwnd;
+                m.message = WM_KEYDOWN;
+                m.wParam = wParam;
+                m.lParam = lParam & 0xdfff;
+                TranslateMessage(&m);
+            }
+        }
+        break;
+      case WM_LBUTTONDOWN:
+      case WM_RBUTTONDOWN:
+      case WM_MBUTTONDOWN:
+        {
+            int button;
+
+            /*
+             * Shift-clicks count as middle-clicks, since otherwise
+             * two-button Windows users won't have any kind of
+             * middle click to use.
+             */
+            if (message == WM_MBUTTONDOWN || (wParam & MK_SHIFT))
+                button = MIDDLE_BUTTON;
+            else if (message == WM_RBUTTONDOWN || is_alt_pressed())
+                button = RIGHT_BUTTON;
+            else
+#ifndef _WIN32_WCE
+                button = LEFT_BUTTON;
+#else
+                if ((fe->game->flags & REQUIRE_RBUTTON) == 0)
+                    button = LEFT_BUTTON;
+                else
+                {
+                    SHRGINFO shrgi;
+
+                    shrgi.cbSize     = sizeof(SHRGINFO);
+                    shrgi.hwndClient = hwnd;
+                    shrgi.ptDown.x   = (signed short)LOWORD(lParam);
+                    shrgi.ptDown.y   = (signed short)HIWORD(lParam);
+                    shrgi.dwFlags    = SHRG_RETURNCMD;
+
+                    if (GN_CONTEXTMENU == SHRecognizeGesture(&shrgi))
+                        button = RIGHT_BUTTON;
+                    else
+                        button = LEFT_BUTTON;
+                }
+#endif
+
+            if (!midend_process_key(fe->me,
+                                    (signed short)LOWORD(lParam) - fe->bitmapPosition.left,
+                                    (signed short)HIWORD(lParam) - fe->bitmapPosition.top,
+                                    button))
+                PostQuitMessage(0);
+
+            SetCapture(hwnd);
+        }
+        break;
+      case WM_LBUTTONUP:
+      case WM_RBUTTONUP:
+      case WM_MBUTTONUP:
+        {
+            int button;
+
+            /*
+             * Shift-clicks count as middle-clicks, since otherwise
+             * two-button Windows users won't have any kind of
+             * middle click to use.
+             */
+            if (message == WM_MBUTTONUP || (wParam & MK_SHIFT))
+                button = MIDDLE_RELEASE;
+            else if (message == WM_RBUTTONUP || is_alt_pressed())
+                button = RIGHT_RELEASE;
+            else
+                button = LEFT_RELEASE;
+
+            if (!midend_process_key(fe->me,
+                                    (signed short)LOWORD(lParam) - fe->bitmapPosition.left,
+                                    (signed short)HIWORD(lParam) - fe->bitmapPosition.top,
+                                    button))
+                PostQuitMessage(0);
+
+            ReleaseCapture();
+        }
+        break;
+      case WM_MOUSEMOVE:
+        {
+            int button;
+
+            if (wParam & (MK_MBUTTON | MK_SHIFT))
+                button = MIDDLE_DRAG;
+            else if (wParam & MK_RBUTTON || is_alt_pressed())
+                button = RIGHT_DRAG;
+            else
+                button = LEFT_DRAG;
+            
+            if (!midend_process_key(fe->me,
+                                    (signed short)LOWORD(lParam) - fe->bitmapPosition.left,
+                                    (signed short)HIWORD(lParam) - fe->bitmapPosition.top,
+                                    button))
+                PostQuitMessage(0);
+        }
+        break;
+      case WM_CHAR:
+        if (!midend_process_key(fe->me, 0, 0, (unsigned char)wParam))
+            PostQuitMessage(0);
+        return 0;
+      case WM_TIMER:
+        if (fe->timer) {
+            DWORD now = GetTickCount();
+            float elapsed = (float) (now - fe->timer_last_tickcount) * 0.001F;
+            midend_timer(fe->me, elapsed);
+            fe->timer_last_tickcount = now;
+        }
+        return 0;
+#ifndef _WIN32_WCE
+      case WM_SIZING:
+        {
+            RECT *sr = (RECT *)lParam;
+            int wx, wy, isedge = 0;
+
+            if (wParam == WMSZ_TOP ||
+                wParam == WMSZ_RIGHT ||
+                wParam == WMSZ_BOTTOM ||
+                wParam == WMSZ_LEFT) isedge = 1;
+            adjust_game_size(fe, sr, isedge, &wx, &wy);
+
+            /* Given the window size the puzzles constrain
+             * us to, work out which edge we should be moving. */
+            if (wParam == WMSZ_TOP ||
+                wParam == WMSZ_TOPLEFT ||
+                wParam == WMSZ_TOPRIGHT) {
+                sr->top = sr->bottom - wy;
+            } else {
+                sr->bottom = sr->top + wy;
+            }
+            if (wParam == WMSZ_LEFT ||
+                wParam == WMSZ_TOPLEFT ||
+                wParam == WMSZ_BOTTOMLEFT) {
+                sr->left = sr->right - wx;
+            } else {
+                sr->right = sr->left + wx;
+            }
+            return TRUE;
+        }
+        break;
+#endif
+    }
+
+    return DefWindowProc(hwnd, message, wParam, lParam);
+}
+
+#ifdef _WIN32_WCE
+static int FindPreviousInstance()
+{
+    /* Check if application is running. If it's running then focus on the window */
+    HWND hOtherWnd = NULL;
+
+    hOtherWnd = FindWindow (wGameName, wGameName);
+    if (hOtherWnd)
+    {
+        SetForegroundWindow (hOtherWnd);
+        return TRUE;
+    }
+
+    return FALSE;
+}
+#endif
+
+/*
+ * Split a complete command line into argc/argv, attempting to do it
+ * exactly the same way the Visual Studio C library would do it (so
+ * that our console utilities, which receive argc and argv already
+ * broken apart by the C library, will have their command lines
+ * processed in the same way as the GUI utilities which get a whole
+ * command line and must call this function).
+ * 
+ * Does not modify the input command line.
+ * 
+ * The final parameter (argstart) is used to return a second array
+ * of char * pointers, the same length as argv, each one pointing
+ * at the start of the corresponding element of argv in the
+ * original command line. So if you get half way through processing
+ * your command line in argc/argv form and then decide you want to
+ * treat the rest as a raw string, you can. If you don't want to,
+ * `argstart' can be safely left NULL.
+ */
+void split_into_argv(char *cmdline, int *argc, char ***argv,
+                     char ***argstart)
+{
+    char *p;
+    char *outputline, *q;
+    char **outputargv, **outputargstart;
+    int outputargc;
+
+    /*
+     * These argument-breaking rules apply to Visual Studio 7, which
+     * is currently the compiler expected to be used for the Windows
+     * port of my puzzles. Visual Studio 10 has different rules,
+     * lacking the curious mod 3 behaviour of consecutive quotes
+     * described below; I presume they fixed a bug. As and when we
+     * migrate to a newer compiler, we'll have to adjust this to
+     * match; however, for the moment we faithfully imitate in our GUI
+     * utilities what our CLI utilities can't be prevented from doing.
+     *
+     * When I investigated this, at first glance the rules appeared to
+     * be:
+     *
+     *  - Single quotes are not special characters.
+     *
+     *  - Double quotes are removed, but within them spaces cease
+     *    to be special.
+     *
+     *  - Backslashes are _only_ special when a sequence of them
+     *    appear just before a double quote. In this situation,
+     *    they are treated like C backslashes: so \" just gives a
+     *    literal quote, \\" gives a literal backslash and then
+     *    opens or closes a double-quoted segment, \\\" gives a
+     *    literal backslash and then a literal quote, \\\\" gives
+     *    two literal backslashes and then opens/closes a
+     *    double-quoted segment, and so forth. Note that this
+     *    behaviour is identical inside and outside double quotes.
+     *
+     *  - Two successive double quotes become one literal double
+     *    quote, but only _inside_ a double-quoted segment.
+     *    Outside, they just form an empty double-quoted segment
+     *    (which may cause an empty argument word).
+     *
+     *  - That only leaves the interesting question of what happens
+     *    when one or more backslashes precedes two or more double
+     *    quotes, starting inside a double-quoted string. And the
+     *    answer to that appears somewhat bizarre. Here I tabulate
+     *    number of backslashes (across the top) against number of
+     *    quotes (down the left), and indicate how many backslashes
+     *    are output, how many quotes are output, and whether a
+     *    quoted segment is open at the end of the sequence:
+     * 
+     *                      backslashes
+     * 
+     *               0         1      2      3      4
+     * 
+     *         0   0,0,y  |  1,0,y  2,0,y  3,0,y  4,0,y
+     *            --------+-----------------------------
+     *         1   0,0,n  |  0,1,y  1,0,n  1,1,y  2,0,n
+     *    q    2   0,1,n  |  0,1,n  1,1,n  1,1,n  2,1,n
+     *    u    3   0,1,y  |  0,2,n  1,1,y  1,2,n  2,1,y
+     *    o    4   0,1,n  |  0,2,y  1,1,n  1,2,y  2,1,n
+     *    t    5   0,2,n  |  0,2,n  1,2,n  1,2,n  2,2,n
+     *    e    6   0,2,y  |  0,3,n  1,2,y  1,3,n  2,2,y
+     *    s    7   0,2,n  |  0,3,y  1,2,n  1,3,y  2,2,n
+     *         8   0,3,n  |  0,3,n  1,3,n  1,3,n  2,3,n
+     *         9   0,3,y  |  0,4,n  1,3,y  1,4,n  2,3,y
+     *        10   0,3,n  |  0,4,y  1,3,n  1,4,y  2,3,n
+     *        11   0,4,n  |  0,4,n  1,4,n  1,4,n  2,4,n
+     * 
+     * 
+     *      [Test fragment was of the form "a\\\"""b c" d.]
+     * 
+     * There is very weird mod-3 behaviour going on here in the
+     * number of quotes, and it even applies when there aren't any
+     * backslashes! How ghastly.
+     * 
+     * With a bit of thought, this extremely odd diagram suddenly
+     * coalesced itself into a coherent, if still ghastly, model of
+     * how things work:
+     * 
+     *  - As before, backslashes are only special when one or more
+     *    of them appear contiguously before at least one double
+     *    quote. In this situation the backslashes do exactly what
+     *    you'd expect: each one quotes the next thing in front of
+     *    it, so you end up with n/2 literal backslashes (if n is
+     *    even) or (n-1)/2 literal backslashes and a literal quote
+     *    (if n is odd). In the latter case the double quote
+     *    character right after the backslashes is used up.
+     * 
+     *  - After that, any remaining double quotes are processed. A
+     *    string of contiguous unescaped double quotes has a mod-3
+     *    behaviour:
+     * 
+     *     * inside a quoted segment, a quote ends the segment.
+     *     * _immediately_ after ending a quoted segment, a quote
+     *       simply produces a literal quote.
+     *     * otherwise, outside a quoted segment, a quote begins a
+     *       quoted segment.
+     * 
+     *    So, for example, if we started inside a quoted segment
+     *    then two contiguous quotes would close the segment and
+     *    produce a literal quote; three would close the segment,
+     *    produce a literal quote, and open a new segment. If we
+     *    started outside a quoted segment, then two contiguous
+     *    quotes would open and then close a segment, producing no
+     *    output (but potentially creating a zero-length argument);
+     *    but three quotes would open and close a segment and then
+     *    produce a literal quote.
+     */
+
+    /*
+     * First deal with the simplest of all special cases: if there
+     * aren't any arguments, return 0,NULL,NULL.
+     */
+    while (*cmdline && isspace(*cmdline)) cmdline++;
+    if (!*cmdline) {
+        if (argc) *argc = 0;
+        if (argv) *argv = NULL;
+        if (argstart) *argstart = NULL;
+        return;
+    }
+
+    /*
+     * This will guaranteeably be big enough; we can realloc it
+     * down later.
+     */
+    outputline = snewn(1+strlen(cmdline), char);
+    outputargv = snewn(strlen(cmdline)+1 / 2, char *);
+    outputargstart = snewn(strlen(cmdline)+1 / 2, char *);
+
+    p = cmdline; q = outputline; outputargc = 0;
+
+    while (*p) {
+        int quote;
+
+        /* Skip whitespace searching for start of argument. */
+        while (*p && isspace(*p)) p++;
+        if (!*p) break;
+
+        /* We have an argument; start it. */
+        outputargv[outputargc] = q;
+        outputargstart[outputargc] = p;
+        outputargc++;
+        quote = 0;
+
+        /* Copy data into the argument until it's finished. */
+        while (*p) {
+            if (!quote && isspace(*p))
+                break;                 /* argument is finished */
+
+            if (*p == '"' || *p == '\\') {
+                /*
+                 * We have a sequence of zero or more backslashes
+                 * followed by a sequence of zero or more quotes.
+                 * Count up how many of each, and then deal with
+                 * them as appropriate.
+                 */
+                int i, slashes = 0, quotes = 0;
+                while (*p == '\\') slashes++, p++;
+                while (*p == '"') quotes++, p++;
+
+                if (!quotes) {
+                    /*
+                     * Special case: if there are no quotes,
+                     * slashes are not special at all, so just copy
+                     * n slashes to the output string.
+                     */
+                    while (slashes--) *q++ = '\\';
+                } else {
+                    /* Slashes annihilate in pairs. */
+                    while (slashes >= 2) slashes -= 2, *q++ = '\\';
+
+                    /* One remaining slash takes out the first quote. */
+                    if (slashes) quotes--, *q++ = '"';
+
+                    if (quotes > 0) {
+                        /* Outside a quote segment, a quote starts one. */
+                        if (!quote) quotes--, quote = 1;
+
+                        /* Now we produce (n+1)/3 literal quotes... */
+                        for (i = 3; i <= quotes+1; i += 3) *q++ = '"';
+
+                        /* ... and end in a quote segment iff 3 divides n. */
+                        quote = (quotes % 3 == 0);
+                    }
+                }
+            } else {
+                *q++ = *p++;
+            }
+        }
+
+        /* At the end of an argument, just append a trailing NUL. */
+        *q++ = '\0';
+    }
+
+    outputargv = sresize(outputargv, outputargc, char *);
+    outputargstart = sresize(outputargstart, outputargc, char *);
+
+    if (argc) *argc = outputargc;
+    if (argv) *argv = outputargv; else sfree(outputargv);
+    if (argstart) *argstart = outputargstart; else sfree(outputargstart);
+}
+
+int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
+{
+    MSG msg;
+    char *error;
+    const game *gg;
+    frontend *fe;
+    midend *me;
+    int argc;
+    char **argv;
+
+    split_into_argv(cmdline, &argc, &argv, NULL);
+
+#ifdef _WIN32_WCE
+    MultiByteToWideChar (CP_ACP, 0, CLASSNAME, -1, wClassName, 256);
+    if (FindPreviousInstance ())
+        return 0;
+#endif
+
+    InitCommonControls();
+
+    if (!prev) {
+        WNDCLASS wndclass;
+
+        wndclass.style = 0;
+        wndclass.lpfnWndProc = WndProc;
+        wndclass.cbClsExtra = 0;
+        wndclass.cbWndExtra = 0;
+        wndclass.hInstance = inst;
+        wndclass.hIcon = LoadIcon(inst, MAKEINTRESOURCE(200));
+#ifndef _WIN32_WCE
+        if (!wndclass.hIcon)           /* in case resource file is absent */
+            wndclass.hIcon = LoadIcon(inst, IDI_APPLICATION);
+#endif
+        wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
+        wndclass.hbrBackground = NULL;
+        wndclass.lpszMenuName = NULL;
+#ifdef _WIN32_WCE
+        wndclass.lpszClassName = wClassName;
+#else
+        wndclass.lpszClassName = CLASSNAME;
+#endif
+
+        RegisterClass(&wndclass);
+    }
+
+    while (*cmdline && isspace((unsigned char)*cmdline))
+        cmdline++;
+
+    init_help();
+
+#ifdef COMBINED
+    gg = gamelist[0];
+    if (argc > 0) {
+        int i;
+        for (i = 0; i < gamecount; i++) {
+            const char *p = gamelist[i]->name;
+            char *q = argv[0];
+            while (*p && *q) {
+                if (isspace((unsigned char)*p)) {
+                    while (*q && isspace((unsigned char)*q))
+                        q++;
+                } else {
+                    if (tolower((unsigned char)*p) !=
+                        tolower((unsigned char)*q))
+                        break;
+                    q++;
+                }
+                p++;
+            }
+            if (!*p) {
+                gg = gamelist[i];
+                --argc;
+                ++argv;
+                break;
+            }
+        }
+    }
+#else
+    gg = &thegame;
+#endif
+
+    fe = frontend_new(inst);
+    me = midend_for_new_game(fe, gg, argc > 0 ? argv[0] : NULL,
+                             TRUE, TRUE, &error);
+    if (!me) {
+        char buf[128];
+#ifdef COMBINED
+        sprintf(buf, "Puzzles Error");
+#else
+        sprintf(buf, "%.100s Error", gg->name);
+#endif
+        MessageBox(NULL, error, buf, MB_OK|MB_ICONERROR);
+        sfree(error);
+        return 1;
+    }
+    fe_set_midend(fe, me);
+    show_window(fe);
+
+    while (GetMessage(&msg, NULL, 0, 0)) {
+        DispatchMessage(&msg);
+    }
+
+    DestroyWindow(fe->hwnd);
+    cleanup_help();
+
+    return msg.wParam;
+}
+/* vim: set shiftwidth=4 tabstop=8: */