gdkgc-win32.c

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/* GDK - The GIMP Drawing Kit
 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

/*
 * Modified by the GTK+ Team and others 1997-1999.  See the AUTHORS
 * file for a list of people on the GTK+ Team.  See the ChangeLog
 * files for a list of changes.  These files are distributed with
 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
 */

#include "config.h"

#include <string.h>

#include "gdkgc.h"
#include "gdkfont.h"
#include "gdkpixmap.h"
#include "gdkprivate.h"
#include "gdkwin32.h"

static UINT text_align = TA_BASELINE;

static void gdk_win32_gc_destroy(GdkGC * gc);
static void gdk_win32_gc_get_values(GdkGC * gc, GdkGCValues * values);
static void gdk_win32_gc_set_values(GdkGC * gc,
                                    GdkGCValues * values,
                                    GdkGCValuesMask values_mask);
static void gdk_win32_gc_set_dashes(GdkGC * gc,
                                    gint dash_offset,
                                    gchar dash_list[], gint n);

static GdkGCClass gdk_win32_gc_class = {
   gdk_win32_gc_destroy,
   gdk_win32_gc_get_values,
   gdk_win32_gc_set_values,
   gdk_win32_gc_set_dashes
};

guint gdk_gc_set_text_align(GdkGC * gc, guint tAlign)
{

//    GdkGCWin32Data *data = GDK_GC_WIN32DATA ((GdkGCPrivate *)gc);

   guint old_val = text_align;
   switch (tAlign) {
   case 7:
      text_align = TA_LEFT | TA_BOTTOM;
      break;
   case 4:
      text_align = TA_LEFT | TA_BASELINE;
      break;
   case 1:
      text_align = TA_LEFT | TA_TOP;
      break;
   case 8:
      text_align = TA_CENTER | TA_BOTTOM;
      break;
   case 5:
      text_align = TA_CENTER | TA_BASELINE;
      break;
   case 2:
      text_align = TA_CENTER | TA_TOP;
      break;
   case 9:
      text_align = TA_RIGHT | TA_BOTTOM;
      break;
   case 6:
      text_align = TA_RIGHT | TA_BASELINE;
      break;
   case 3:
      text_align = TA_RIGHT | TA_TOP;
      break;
   case 0:
      text_align = TA_BASELINE;
      break;
   }
//    if (SetTextAlign (data->xgc, text_align) == GDI_ERROR)
//                                                                                                                                                                                                                                                             WIN32_GDI_FAILED ("SetTextAlign");
   return (old_val);
}

static void
gdk_win32_gc_values_to_win32values(GdkGCValues * values,
                                   GdkGCValuesMask mask,
                                   GdkGCWin32Data * data)
{
   char *s = "";
   gint sw, sh;

   GDK_NOTE(MISC, g_print("{"));

   if (mask & GDK_GC_FOREGROUND) {
      data->foreground = values->foreground.pixel;
      data->values_mask |= GDK_GC_FOREGROUND;
      GDK_NOTE(MISC, (g_print("fg=%.06x", data->foreground), s = ","));
   }

   if (mask & GDK_GC_BACKGROUND) {
      data->background = values->background.pixel;
      data->values_mask |= GDK_GC_BACKGROUND;
      GDK_NOTE(MISC, (g_print("%sbg=%.06x", s, data->background),
                      s = ","));
   }

   if ((mask & GDK_GC_FONT) && (values->font->type == GDK_FONT_FONT
                                || values->font->type == GDK_FONT_FONTSET))
   {
      if (data->font != NULL)
         gdk_font_unref(data->font);
      data->font = values->font;
      if (data->font != NULL) {
         gchar *xlfd;

         gdk_font_ref(data->font);
         data->values_mask |= GDK_GC_FONT;
         GDK_NOTE(MISC, (xlfd = gdk_font_full_name_get(data->font),
                         g_print("%sfont=%s", s, xlfd),
                         s = ",", gdk_font_full_name_free(xlfd)));
      } else {
         data->values_mask &= ~GDK_GC_FONT;
         GDK_NOTE(MISC, (g_print("%sfont=NULL"), s = ","));
      }
   }

   if (mask & GDK_GC_FUNCTION) {
      GDK_NOTE(MISC,
               (g_print("%srop2=%s ",
                        s,
                        gdk_win32_function_to_string(values->function)),
                s = ","));
      switch (values->function) {
      case GDK_COPY:
         data->rop2 = R2_COPYPEN;
         GDK_NOTE(MISC, g_print("(COPYPEN)"));
         break;
      case GDK_INVERT:
         data->rop2 = R2_NOT;
         GDK_NOTE(MISC, g_print("(NOT)"));
         break;
      case GDK_XOR:
         data->rop2 = R2_XORPEN;
         GDK_NOTE(MISC, g_print("(XORPEN)"));
         break;
      case GDK_CLEAR:
         data->rop2 = R2_BLACK;
         GDK_NOTE(MISC, g_print("(BLACK)"));
         break;
      case GDK_AND:
         data->rop2 = R2_MASKPEN;
         GDK_NOTE(MISC, g_print("(MASKPEN)"));
         break;
      case GDK_AND_REVERSE:
         data->rop2 = R2_MASKPENNOT;
         GDK_NOTE(MISC, g_print("(MASKPENNOT)"));
         break;
      case GDK_AND_INVERT:
         data->rop2 = R2_MASKNOTPEN;
         GDK_NOTE(MISC, g_print("(MASKNOTPEN)"));
         break;
      case GDK_NOOP:
         data->rop2 = R2_NOP;
         GDK_NOTE(MISC, g_print("(NOP)"));
         break;
      case GDK_OR:
         data->rop2 = R2_MERGEPEN;
         GDK_NOTE(MISC, g_print("(MERGEPEN)"));
         break;
      case GDK_EQUIV:
         data->rop2 = R2_NOTXORPEN;
         GDK_NOTE(MISC, g_print("(NOTXORPEN)"));
         break;
      case GDK_OR_REVERSE:
         data->rop2 = R2_MERGEPENNOT;
         GDK_NOTE(MISC, g_print("(MERGEPENNOT)"));
         break;
      case GDK_COPY_INVERT:
         data->rop2 = R2_NOTCOPYPEN;
         GDK_NOTE(MISC, g_print("(NOTCOPYPEN)"));
         break;
      case GDK_OR_INVERT:
         data->rop2 = R2_MERGENOTPEN;
         GDK_NOTE(MISC, g_print("(MERGENOTPEN)"));
         break;
      case GDK_NAND:
         data->rop2 = R2_NOTMASKPEN;
         GDK_NOTE(MISC, g_print("(NOTMASKPEN)"));
         break;
      case GDK_SET:
         data->rop2 = R2_WHITE;
         GDK_NOTE(MISC, g_print("(WHITE)"));
         break;
      }
      GDK_NOTE(MISC, g_print(" "));
      data->values_mask |= GDK_GC_FUNCTION;
   }

   if (mask & GDK_GC_FILL) {
      data->fill_style = values->fill;
      data->values_mask |= GDK_GC_FILL;
      GDK_NOTE(MISC,
               (g_print("%sfill=%s",
                        s,
                        gdk_win32_fill_style_to_string(data->fill_style)),
                s = ","));
   }

   if (mask & GDK_GC_TILE) {
      if (data->tile != NULL)
         gdk_drawable_unref(data->tile);
      data->tile = values->tile;
      if (data->tile != NULL) {
         gdk_drawable_ref(data->tile);
         data->values_mask |= GDK_GC_TILE;
         GDK_NOTE(MISC, (g_print("%stile=%#x", s,
                                 GDK_DRAWABLE_XID(data->tile)), s = ","));
      } else {
         data->values_mask &= ~GDK_GC_TILE;
         GDK_NOTE(MISC, (g_print("%stile=NULL", s), s = ","));
      }
   }

   if (mask & GDK_GC_STIPPLE) {
      if (data->stipple != NULL)
         gdk_drawable_unref(data->stipple);
      data->stipple = values->stipple;
      if (data->stipple != NULL) {
         gdk_drawable_get_size(data->stipple, &sw, &sh);

         if (sw != 8 || sh != 8) {
            /* It seems that it *must* be 8x8, at least on my machine. 
             * Thus, tile an 8x8 bitmap with the stipple in case it is
             * smaller, or simply use just the top left 8x8 in case it is
             * larger.
             */
            gchar dummy[8];
            GdkPixmap *bm = gdk_bitmap_create_from_data(NULL, dummy, 8, 8);
            GdkGC *gc = gdk_gc_new(bm);
            gint i, j;

            i = 0;
            while (i < 8) {
               j = 0;
               while (j < 8) {
                  gdk_draw_drawable(bm, gc, data->stipple, 0, 0, i, j, sw,
                                    sh);
                  j += sh;
               }
               i += sw;
            }
            data->stipple = bm;
            gdk_gc_unref(gc);
         } else
            gdk_drawable_ref(data->stipple);
         data->values_mask |= GDK_GC_STIPPLE;
         GDK_NOTE(MISC, (g_print("%sstipple=%#x", s,
                                 GDK_DRAWABLE_XID(data->stipple)),
                         s = ","));
      } else {
         data->values_mask &= ~GDK_GC_STIPPLE;
         GDK_NOTE(MISC, (g_print("%sstipple=NULL", s), s = ","));
      }
   }

   if (mask & GDK_GC_CLIP_MASK) {
      if (data->clip_region != NULL)
         if (!DeleteObject(data->clip_region))
            WIN32_GDI_FAILED("DeleteObject");
      if (values->clip_mask != NULL) {
         data->clip_region =
             BitmapToRegion((HBITMAP) GDK_DRAWABLE_XID(values->clip_mask));
         data->values_mask |= GDK_GC_CLIP_MASK;
      } else {
         data->clip_region = NULL;
         data->values_mask &= ~GDK_GC_CLIP_MASK;
      }
      GDK_NOTE(MISC, (g_print("%sclip=%#x", s, data->clip_region),
                      s = ","));
   }

   if (mask & GDK_GC_SUBWINDOW) {
      data->subwindow_mode = values->subwindow_mode;
      data->values_mask |= GDK_GC_SUBWINDOW;
      GDK_NOTE(MISC, (g_print("%ssubw=%d", s, data->subwindow_mode),
                      s = ","));
   }

   if (mask & GDK_GC_TS_X_ORIGIN) {
      data->ts_x_origin = values->ts_x_origin;
      data->values_mask |= GDK_GC_TS_X_ORIGIN;
      GDK_NOTE(MISC, (g_print("%sts_x=%d", s, data->ts_x_origin),
                      s = ","));
   }

   if (mask & GDK_GC_TS_Y_ORIGIN) {
      data->ts_y_origin = values->ts_y_origin;
      data->values_mask |= GDK_GC_TS_Y_ORIGIN;
      GDK_NOTE(MISC, (g_print("%sts_y=%d", s, data->ts_y_origin),
                      s = ","));
   }

   if (mask & GDK_GC_CLIP_X_ORIGIN) {
      data->clip_x_origin = values->clip_x_origin;
      data->values_mask |= GDK_GC_CLIP_X_ORIGIN;
      GDK_NOTE(MISC, (g_print("%sclip_x=%d", s, data->clip_x_origin),
                      s = ","));
   }

   if (mask & GDK_GC_CLIP_Y_ORIGIN) {
      data->clip_y_origin = values->clip_y_origin;
      data->values_mask |= GDK_GC_CLIP_Y_ORIGIN;
      GDK_NOTE(MISC, (g_print("%sclip_y=%d", s, data->clip_y_origin),
                      s = ","));
   }

   if (mask & GDK_GC_EXPOSURES) {
      data->graphics_exposures = values->graphics_exposures;
      data->values_mask |= GDK_GC_EXPOSURES;
      GDK_NOTE(MISC, (g_print("%sexp=%d", s, data->graphics_exposures),
                      s = ","));
   }

   if (mask & GDK_GC_LINE_WIDTH) {
      data->pen_width = values->line_width;
      data->values_mask |= GDK_GC_LINE_WIDTH;
      GDK_NOTE(MISC, (g_print("%spw=%d", s, data->pen_width), s = ","));
   }

   if (mask & GDK_GC_LINE_STYLE) {
      data->pen_style &= ~(PS_STYLE_MASK);
      GDK_NOTE(MISC, (g_print("%sps|=", s), s = ","));
      switch (values->line_style) {
      case GDK_LINE_SOLID:
         GDK_NOTE(MISC, g_print("LINE_SOLID"));
         data->pen_style |= PS_SOLID;
         break;
      case GDK_LINE_ON_OFF_DASH:
      case GDK_LINE_DOUBLE_DASH:        /* ??? */
         GDK_NOTE(MISC, g_print("DASH"));
         data->pen_style |= PS_DASH;
         break;
      }
      data->values_mask |= GDK_GC_LINE_STYLE;
   }

   if (mask & GDK_GC_CAP_STYLE) {
      data->pen_style &= ~(PS_ENDCAP_MASK);
      GDK_NOTE(MISC, (g_print("%sps|=", s), s = ","));
      switch (values->cap_style) {
      case GDK_CAP_NOT_LAST:   /* ??? */
      case GDK_CAP_BUTT:
         GDK_NOTE(MISC, g_print("ENDCAP_FLAT"));
         data->pen_style |= PS_ENDCAP_FLAT;
         break;
      case GDK_CAP_ROUND:
         GDK_NOTE(MISC, g_print("ENDCAP_ROUND"));
         data->pen_style |= PS_ENDCAP_ROUND;
         break;
      case GDK_CAP_PROJECTING:
         GDK_NOTE(MISC, g_print("ENDCAP_SQUARE"));
         data->pen_style |= PS_ENDCAP_SQUARE;
         break;
      }
      data->values_mask |= GDK_GC_CAP_STYLE;
   }

   if (mask & GDK_GC_JOIN_STYLE) {
      data->pen_style &= ~(PS_JOIN_MASK);
      GDK_NOTE(MISC, (g_print("%sps|=", s), s = ","));
      switch (values->join_style) {
      case GDK_JOIN_MITER:
         GDK_NOTE(MISC, g_print("JOIN_MITER"));
         data->pen_style |= PS_JOIN_MITER;
         break;
      case GDK_JOIN_ROUND:
         GDK_NOTE(MISC, g_print("JOIN_ROUND"));
         data->pen_style |= PS_JOIN_ROUND;
         break;
      case GDK_JOIN_BEVEL:
         GDK_NOTE(MISC, g_print("JOIN_BEVEL"));
         data->pen_style |= PS_JOIN_BEVEL;
         break;
      }
      data->values_mask |= GDK_GC_JOIN_STYLE;
   }
   GDK_NOTE(MISC, g_print("}\n"));
}

GdkGC *_gdk_win32_gc_new(GdkDrawable * drawable,
                         GdkGCValues * values, GdkGCValuesMask mask)
{
   GdkGC *gc;
   GdkGCPrivate *private;
   GdkGCWin32Data *data;
#if 0
   static GdkColor black;
   static GdkColor white;
   static gboolean beenhere = FALSE;

   if (!beenhere) {
      gdk_color_black(gdk_colormap_get_system(), &black);
      gdk_color_white(gdk_colormap_get_system(), &white);
      beenhere = TRUE;
   }
#endif
   gc = gdk_gc_alloc();
   private = (GdkGCPrivate *) gc;

   private->klass = &gdk_win32_gc_class;
   private->klass_data = data = g_new(GdkGCWin32Data, 1);

#if 0
   data->foreground = black.pixel;
   data->background = white.pixel;
#else
   data->foreground = 0;
   data->background = 1;
#endif
   data->font = NULL;
   data->rop2 = R2_COPYPEN;
   data->fill_style = GDK_SOLID;
   data->tile = NULL;
   data->stipple = NULL;
   data->clip_region = NULL;
   data->ts_x_origin = data->ts_y_origin =
       data->clip_x_origin = data->clip_y_origin = 0;
   data->pen_style = PS_GEOMETRIC | PS_ENDCAP_FLAT | PS_JOIN_MITER;
   data->pen_width = 0;

   data->values_mask = GDK_GC_FUNCTION | GDK_GC_FILL;

   GDK_NOTE(MISC, g_print("_gdk_win32_gc_new: "));
   gdk_win32_gc_values_to_win32values(values, mask, data);

   data->hwnd = NULL;
   data->xgc = NULL;

   GDK_NOTE(MISC, g_print(" = %p\n", gc));

   return gc;
}

static void gdk_win32_gc_destroy(GdkGC * gc)
{
   GdkGCWin32Data *data = GDK_GC_WIN32DATA(gc);

   if (data->values_mask & GDK_GC_FONT)
      gdk_font_unref(data->font);

   if (data->values_mask & GDK_GC_TILE)
      gdk_drawable_unref(data->tile);

   if (data->values_mask & GDK_GC_STIPPLE)
      gdk_drawable_unref(data->stipple);

   if (data->values_mask & GDK_GC_CLIP_MASK)
      DeleteObject(data->clip_region);

   g_free(GDK_GC_WIN32DATA(gc));
}

static void gdk_win32_gc_get_values(GdkGC * gc, GdkGCValues * values)
{
   GdkGCWin32Data *data = GDK_GC_WIN32DATA(gc);

   values->foreground.pixel = data->foreground;
   values->background.pixel = data->background;
   values->font = data->font;

   switch (data->rop2) {
   case R2_COPYPEN:
      values->function = GDK_COPY;
      break;
   case R2_NOT:
      values->function = GDK_INVERT;
      break;
   case R2_XORPEN:
      values->function = GDK_XOR;
      break;
   case R2_BLACK:
      values->function = GDK_CLEAR;
      break;
   case R2_MASKPEN:
      values->function = GDK_AND;
      break;
   case R2_MASKPENNOT:
      values->function = GDK_AND_REVERSE;
      break;
   case R2_MASKNOTPEN:
      values->function = GDK_AND_INVERT;
      break;
   case R2_NOP:
      values->function = GDK_NOOP;
      break;
   case R2_MERGEPEN:
      values->function = GDK_OR;
      break;
   case R2_NOTXORPEN:
      values->function = GDK_EQUIV;
      break;
   case R2_MERGEPENNOT:
      values->function = GDK_OR_REVERSE;
      break;
   case R2_NOTCOPYPEN:
      values->function = GDK_COPY_INVERT;
      break;
   case R2_MERGENOTPEN:
      values->function = GDK_OR_INVERT;
      break;
   case R2_NOTMASKPEN:
      values->function = GDK_NAND;
      break;
   case R2_WHITE:
      values->function = GDK_SET;
      break;
   }

   values->fill = data->fill_style;

   values->tile = data->tile;
   values->stipple = data->stipple;

   values->clip_mask = NULL;
#if 0 // bb mod 15.02.06
   if (data->clip_region != NULL) {
      RECT rect;
      HBRUSH hbr;
      HDC hdc;
      HGDIOBJ oldbitmap;
      GdkPixmap *pixmap;
      gboolean ok = TRUE;

      /* Build pixmap for clip region; if anything fails, do so w/o invoking */
      /* more code on failed objects, just in case this is the cause of one */
      /* of the rare crashes we're seeing */
      GetRgnBox (data->clip_region, &rect);
      pixmap = gdk_pixmap_new (NULL, rect.right - rect.left, rect.bottom - rect.top,1);
      hbr = GetStockObject (WHITE_BRUSH);
      if ((hdc = CreateCompatibleDC (NULL)) == NULL)
         WIN32_GDI_FAILED ("CreateCompatibleDC"), ok = FALSE;
      if (ok && (oldbitmap =
                 SelectObject (hdc, GDK_DRAWABLE_XID (pixmap))) == NULL) 
         WIN32_GDI_FAILED ("SelectObject"), ok = FALSE;
      if (ok) {
         hbr = GetStockObject (BLACK_BRUSH);
         if (hbr == NULL || !FillRect (hdc, &rect, hbr)) 
            WIN32_GDI_FAILED ("FillRect"), ok = FALSE;
      }
      if (ok) {
         hbr = GetStockObject (WHITE_BRUSH);
         if (hbr == NULL || !FillRgn (hdc, data->clip_region, hbr)) 
            WIN32_GDI_FAILED ("FillRgn"), ok = FALSE;
      }
      if (hdc != NULL && oldbitmap != NULL) {
         if (SelectObject (hdc, oldbitmap) == NULL) 
            WIN32_GDI_FAILED ("SelectObject"), ok = FALSE;
      }     
      if (hdc != NULL)
         DeleteDC (hdc);
      if (ok)
         values->clip_mask = pixmap;
      else if (pixmap != NULL)
         gdk_drawable_unref(pixmap);
   }
#endif // bb mod 15.02.06

   values->subwindow_mode = data->subwindow_mode;
   values->ts_x_origin = data->ts_x_origin;
   values->ts_y_origin = data->ts_y_origin;
   values->clip_x_origin = data->clip_x_origin;
   values->clip_y_origin = data->clip_y_origin;
   values->graphics_exposures = data->graphics_exposures;
   values->line_width = data->pen_width;

   if (data->pen_style & PS_SOLID)
      values->line_style = GDK_LINE_SOLID;
   else if (data->pen_style & PS_DASH)
      values->line_style = GDK_LINE_ON_OFF_DASH;
   else
      values->line_style = GDK_LINE_SOLID;

   /* PS_ENDCAP_ROUND is zero */
   if (data->pen_style & PS_ENDCAP_FLAT)
      values->cap_style = GDK_CAP_BUTT;
   else if (data->pen_style & PS_ENDCAP_SQUARE)
      values->cap_style = GDK_CAP_PROJECTING;
   else
      values->cap_style = GDK_CAP_ROUND;

   /* PS_JOIN_ROUND is zero */
   if (data->pen_style & PS_JOIN_MITER)
      values->join_style = GDK_JOIN_MITER;
   else if (data->pen_style & PS_JOIN_BEVEL)
      values->join_style = GDK_JOIN_BEVEL;
   else
      values->join_style = GDK_JOIN_ROUND;
}

static void
gdk_win32_gc_set_values(GdkGC * gc,
                        GdkGCValues * values, GdkGCValuesMask mask)
{
   GdkGCWin32Data *data = GDK_GC_WIN32DATA(gc);

   GDK_NOTE(MISC, g_print("gdk_win32_gc_set_values: "));

   gdk_win32_gc_values_to_win32values(values, mask, data);
}

static void
gdk_win32_gc_set_dashes(GdkGC * gc,
                        gint dash_offset, gchar dash_list[], gint n)
{
   int i;
   GdkGCWin32Data *data = GDK_GC_WIN32DATA(gc);

   data->pen_style &= ~(PS_STYLE_MASK);
//  data->pen_style |= PS_DASH; // bb removed 28.01.2003

   /* 
    * Set the extended line style. This could be done by 
    * PS_USERSTYLE and ExtCreatePen; but ONLY on WinNT, 
    * so let's make a guess (based on the implementation 
    * in DIA). On Win9x this does only work for lines
    * with width one ...
    *
    * More workarounds for Win9x descibed at:
    * http://www.codeguru.com/gdi/dashed.shtml
    */
   if (!IS_WIN_NT(windows_version) && data->pen_width > 1) {
      GDK_NOTE(MISC,
               g_print("gdk_win32_gc_set_dashes: not fully supported\n"));
      data->pen_style |= PS_SOLID;
      return;
   }
   // bb changes 29.01.2003
   if (!IS_WIN_NT(windows_version)) {
      /* data->pen_style = PS_COSMETIC; ??? */
      if (2 == n) {
         if ((dash_list[0] == dash_list[1]) && (dash_list[0] > 2)) {
            data->pen_style |= PS_DASH;
            GDK_NOTE(MISC,
                     g_print("gdk_win32_gc_set_dashes: PS_DASH (%d,%d)\n",
                             dash_list[0], dash_list[1]));
         } else {
            data->pen_style |= PS_DOT;
            GDK_NOTE(MISC,
                     g_print("gdk_win32_gc_set_dashes: PS_DOT (%d,%d)\n",
                             dash_list[0], dash_list[1]));
         }
      } else if (4 == n) {
         data->pen_style |= PS_DASHDOT;
         GDK_NOTE(MISC,
                  g_print
                  ("gdk_win32_gc_set_dashes: PS_DASHDOT (%d,%d,%d,%d)\n",
                   dash_list[0], dash_list[1], dash_list[2],
                   dash_list[3]));
      } else if (6 == n) {
         data->pen_style |= PS_DASHDOTDOT;
         GDK_NOTE(MISC,
                  g_print
                  ("gdk_win32_gc_set_dashes: PS_DASHDOTDOT (%d,%d,%d,%d,%d,%d)\n",
                   dash_list[0], dash_list[1], dash_list[2], dash_list[3],
                   dash_list[4], dash_list[5]));
      } else {
         data->pen_style |= PS_DASH;
         GDK_NOTE(MISC,
                  g_print
                  ("gdk_win32_gc_set_dashes: no guess for %d dashes\n",
                   n));
      }
   } else {

// vo add
      if (IS_WIN_NT(windows_version)) {
         if ((data->pen_width <= 1) && (n == 0)) {
            data->pen_style = PS_COSMETIC;
            data->luser_dash = 0;
            data->pen_width = 1;
            return;
         }
      }

      data->pen_style |= PS_USERSTYLE;
      data->luser_dash = n;     // not for Windows 95
      for (i = 0; i < n; i++)
         data->user_dash[i] = (int) dash_list[i];
   }
}

void gdk_gc_set_clip_rectangle(GdkGC * gc, GdkRectangle * rectangle)
{
   GdkGCWin32Data *data;

   g_return_if_fail(gc != NULL);

   data = GDK_GC_WIN32DATA(gc);

   if (data->clip_region != NULL)
      if (!DeleteObject(data->clip_region))
         WIN32_GDI_FAILED("DeleteObject");
   if (rectangle) {
      GDK_NOTE(MISC,
               g_print("gdk_gc_set_clip_rectangle: (%d) %dx%d@+%d+%d\n",
                       data,
                       rectangle->width, rectangle->height,
                       rectangle->x, rectangle->y));
      if ((data->clip_region =
           CreateRectRgn(rectangle->x, rectangle->y,
                         rectangle->x + rectangle->width,
                         rectangle->y + rectangle->height)) == NULL)
         WIN32_GDI_FAILED("CreateRectRgn");

      data->values_mask |= GDK_GC_CLIP_MASK;
   } else {
      GDK_NOTE(MISC, g_print("gdk_gc_set_clip_rectangle: (%d) NULL\n",
                             data));
      data->clip_region = NULL;
      data->values_mask &= ~GDK_GC_CLIP_MASK;
   }
   data->values_mask &= ~(GDK_GC_CLIP_X_ORIGIN | GDK_GC_CLIP_Y_ORIGIN);
}

void gdk_gc_set_clip_region(GdkGC * gc, GdkRegion * region)
{
   GdkGCWin32Data *data;

   g_return_if_fail(gc != NULL);

   data = GDK_GC_WIN32DATA(gc);

   GDK_NOTE(MISC, g_print("gdk_gc_set_clip_region: (%d) %s\n",
                          data, (region != NULL ? "xxx" : "None")));

   if (data->clip_region != NULL)
      if (!DeleteObject(data->clip_region))
         WIN32_GDI_FAILED("DeleteObject");
   if (region) {
      GdkRegionPrivate *region_private;

      region_private = (GdkRegionPrivate *) region;
      data->clip_region = CreateRectRgn(1, 1, 0, 0);
      CombineRgn(data->clip_region, region_private->xregion, NULL,
                 RGN_COPY);
      data->values_mask |= GDK_GC_CLIP_MASK;
   } else {
      data->clip_region = NULL;
      data->values_mask &= ~GDK_GC_CLIP_MASK;
   }
}

void gdk_gc_copy(GdkGC * dst_gc, GdkGC * src_gc)
{
   GdkGCWin32Data *dst_data = GDK_GC_WIN32DATA(dst_gc);
   GdkGCWin32Data *src_data = GDK_GC_WIN32DATA(src_gc);
   DWORD nbytes;
   LPRGNDATA rgn;

   if (dst_data->font != NULL)
      gdk_font_unref(dst_data->font);
   if (dst_data->tile != NULL)
      gdk_drawable_unref(dst_data->tile);
   if (dst_data->stipple != NULL)
      gdk_drawable_unref(dst_data->stipple);
   if (dst_data->clip_region != NULL)
      if (!DeleteObject(dst_data->clip_region))
         WIN32_GDI_FAILED("DeleteObject");

   *dst_data = *src_data;

   if (dst_data->clip_region != NULL) {
      nbytes = GetRegionData(dst_data->clip_region, 0, NULL);
      rgn = g_malloc(nbytes);
      GetRegionData(dst_data->clip_region, nbytes, rgn);
      if ((dst_data->clip_region =
           ExtCreateRegion(NULL, nbytes, rgn)) == NULL)
         WIN32_GDI_FAILED("ExtCreateRegion");
      g_free(rgn);
   }

   if (dst_data->font != NULL)
      gdk_font_ref(dst_data->font);
   if (dst_data->tile != NULL)
      gdk_drawable_ref(dst_data->tile);
   if (dst_data->stipple != NULL)
      gdk_drawable_ref(dst_data->stipple);
}

static guint bitmask[9] = { 0, 1, 3, 7, 15, 31, 63, 127, 255 };

COLORREF
gdk_colormap_color(GdkColormapPrivateWin32 * colormap_private,
                   gulong pixel)
{
   GdkVisual *visual;
   guchar r, g, b;

   if (colormap_private == NULL || colormap_private->xcolormap->rc_palette)
      return PALETTEINDEX(pixel);
   else {
      visual = colormap_private->base.visual;
      r = (pixel & visual->red_mask) >> visual->red_shift;
      r = (r * 255) / bitmask[visual->red_prec];
      g = (pixel & visual->green_mask) >> visual->green_shift;
      g = (g * 255) / bitmask[visual->green_prec];
      b = (pixel & visual->blue_mask) >> visual->blue_shift;
      b = (b * 255) / bitmask[visual->blue_prec];

      return RGB(r, g, b);
   }
}

static void
predraw_set_foreground(GdkGCWin32Data * data,
                       GdkColormapPrivateWin32 * colormap_private)
{
   COLORREF fg;
   LOGBRUSH logbrush;
   HPEN hpen;
   HBRUSH hbr;

   if (colormap_private == NULL) {
      /* A 1 bit deep bitmap */
      struct {
         WORD palVersion;
         WORD palNumEntries;
         PALETTEENTRY palPalEntry[2];
      } logpal;
      static HPALETTE hpal = NULL;

      if (hpal == NULL) {
         /* Create a b&w palette */
         logpal.palVersion = 0x300;
         logpal.palNumEntries = 2;
         logpal.palPalEntry[0].peRed =
             logpal.palPalEntry[0].peGreen =
             logpal.palPalEntry[0].peBlue = 0x00;
         logpal.palPalEntry[0].peFlags = 0x00;
         logpal.palPalEntry[1].peRed =
             logpal.palPalEntry[1].peGreen =
             logpal.palPalEntry[1].peBlue = 0xFF;
         logpal.palPalEntry[1].peFlags = 0x00;
         if ((hpal = CreatePalette((LOGPALETTE *) & logpal)) == NULL)
            WIN32_GDI_FAILED("CreatePalette");
      }
      SelectPalette(data->xgc, hpal, FALSE);
      RealizePalette(data->xgc);
      fg = PALETTEINDEX(data->foreground);
   } else if (colormap_private->xcolormap->rc_palette) {
      int k;
      if (SelectPalette(data->xgc, colormap_private->xcolormap->palette,
                        FALSE) == NULL)
         WIN32_GDI_FAILED("SelectPalette");
      if (TRUE || colormap_private->xcolormap->stale) {
         if ((k = RealizePalette(data->xgc)) == GDI_ERROR)
            WIN32_GDI_FAILED("RealizePalette");
         colormap_private->xcolormap->stale = FALSE;
      }
#if 0
      g_print("Selected palette %#x for gc %#x, realized %d colors\n",
              colormap_private->xcolormap->palette, data->xgc, k);
#endif
   }

   fg = gdk_colormap_color(colormap_private, data->foreground);

   if (SetTextColor(data->xgc, fg) == CLR_INVALID)
      WIN32_GDI_FAILED("SetTextColor");

   /* Create and select pen and brush. */

   logbrush.lbStyle = BS_SOLID;
   logbrush.lbColor = fg;
   logbrush.lbHatch = 0;

// vo add
   if (data->pen_width <= 1) {
      data->pen_width = 1;

      if (IS_WIN_NT(windows_version)) {
         if ((data->pen_style & PS_STYLE_MASK) == PS_SOLID) {
            data->pen_style = PS_COSMETIC;
         }
      }

   } else {
      data->pen_style |= PS_GEOMETRIC;
   }

// bb add
   if (IS_WIN_NT(windows_version) && (data->pen_style & PS_USERSTYLE)) {
      if ((hpen = ExtCreatePen(data->pen_style, data->pen_width,
                               &logbrush, data->luser_dash,
                               (CONST DWORD *) data->user_dash)) == NULL)
         WIN32_GDI_FAILED("ExtCreatePen");
   } else {
      if ((hpen = ExtCreatePen(data->pen_style, data->pen_width,
                               &logbrush, 0, NULL)) == NULL)
         WIN32_GDI_FAILED("ExtCreatePen");
      if (SetBkMode(data->xgc, TRANSPARENT) == 0)
         WIN32_GDI_FAILED("SetBkMode");
   }
   if (SelectObject(data->xgc, hpen) == NULL)
      WIN32_GDI_FAILED("SelectObject");

   switch (data->fill_style) {
   case GDK_OPAQUE_STIPPLED:
      if ((hbr =
           CreatePatternBrush(GDK_DRAWABLE_XID(data->stipple))) == NULL)
         WIN32_GDI_FAILED("CreatePatternBrush");

      SetBrushOrgEx(data->xgc, data->ts_x_origin, data->ts_y_origin, NULL);

      break;
// bb add
   case GDK_STIPPLED:
      if ((hbr =
           CreatePatternBrush(GDK_DRAWABLE_XID(data->stipple))) == NULL)
         WIN32_GDI_FAILED("CreatePatternBrush");

      SetBrushOrgEx(data->xgc, data->ts_x_origin, data->ts_y_origin, NULL);

      break;
// end bb add
   case GDK_SOLID:
   default:
      if ((hbr = CreateSolidBrush(fg)) == NULL)
         WIN32_GDI_FAILED("CreateSolidBrush");
      break;
   }
   if (SelectObject(data->xgc, hbr) == NULL)
      WIN32_GDI_FAILED("SelectObject");
}

void
predraw_set_background(GdkGCWin32Data * data,
                       GdkColormapPrivateWin32 * colormap_private)
{
   COLORREF bg = gdk_colormap_color(colormap_private, data->background);

   if (SetBkColor(data->xgc, bg) == CLR_INVALID)
      WIN32_GDI_FAILED("SetBkColor");
}

HDC
gdk_gc_predraw(GdkDrawable * drawable,
               GdkGCPrivate * gc_private, GdkGCValuesMask usage)
{
   GdkDrawablePrivate *drawable_private = (GdkDrawablePrivate *) drawable;
   GdkColormapPrivateWin32 *colormap_private =
       (GdkColormapPrivateWin32 *) drawable_private->colormap;
   GdkGCWin32Data *data = GDK_GC_WIN32DATA(gc_private);

   g_assert(data->xgc == NULL);

   data->hwnd = GDK_DRAWABLE_XID(drawable);

   if (GDK_DRAWABLE_TYPE(drawable) == GDK_DRAWABLE_PIXMAP) {
      if ((data->xgc = CreateCompatibleDC(NULL)) == NULL)
         WIN32_GDI_FAILED("CreateCompatibleDC");

      if ((data->saved_dc = SaveDC(data->xgc)) == 0)
         WIN32_GDI_FAILED("SaveDC");

      if (SelectObject(data->xgc, data->hwnd) == NULL)
         WIN32_GDI_FAILED("SelectObject");
   } else {
      if ((data->xgc = GetDC(data->hwnd)) == NULL)
         WIN32_GDI_FAILED("GetDC");

      if ((data->saved_dc = SaveDC(data->xgc)) == 0)
         WIN32_GDI_FAILED("SaveDC");
   }

   if (usage & GDK_GC_FOREGROUND)
      predraw_set_foreground(data, colormap_private);

   if ((usage & GDK_GC_BACKGROUND)
       && (data->values_mask & GDK_GC_BACKGROUND))
      predraw_set_background(data, colormap_private);

// vo add
   if (!IS_WIN_NT(windows_version)) {
      if (SetBkMode(data->xgc, TRANSPARENT) == 0)
         WIN32_GDI_FAILED("SetBkMode");
   }

   if (usage & GDK_GC_FONT) {
      if (SetBkMode(data->xgc, TRANSPARENT) == 0)
         WIN32_GDI_FAILED("SetBkMode");

//      if (SetTextAlign (data->xgc, TA_BASELINE) == GDI_ERROR)
      if (SetTextAlign(data->xgc, text_align) == GDI_ERROR)
         WIN32_GDI_FAILED("SetTextAlign");
   }

   if (data->rop2 != R2_COPYPEN)
      if (SetROP2(data->xgc, data->rop2) == 0)
         WIN32_GDI_FAILED("SetROP2");

   if ((data->values_mask & GDK_GC_CLIP_MASK)
       && data->clip_region != NULL) {
      if (data->
          values_mask & (GDK_GC_CLIP_X_ORIGIN | GDK_GC_CLIP_Y_ORIGIN))
         OffsetRgn(data->clip_region, data->clip_x_origin,
                   data->clip_y_origin);
      SelectClipRgn(data->xgc, data->clip_region);
   }

   return data->xgc;
}

void
gdk_gc_postdraw(GdkDrawable * drawable,
                GdkGCPrivate * gc_private, GdkGCValuesMask usage)
{
   GdkDrawablePrivate *drawable_private = (GdkDrawablePrivate *) drawable;
   GdkColormapPrivateWin32 *colormap_private =
       (GdkColormapPrivateWin32 *) drawable_private->colormap;
   GdkGCWin32Data *data = GDK_GC_WIN32DATA(gc_private);
   HGDIOBJ hpen = NULL;
   HGDIOBJ hbr = NULL;

   if (usage & GDK_GC_FOREGROUND) {
      if ((hpen = GetCurrentObject(data->xgc, OBJ_PEN)) == NULL)
         WIN32_GDI_FAILED("GetCurrentObject");

      if ((hbr = GetCurrentObject(data->xgc, OBJ_BRUSH)) == NULL)
         WIN32_GDI_FAILED("GetCurrentObject");
   }

   if (!RestoreDC(data->xgc, data->saved_dc))
      WIN32_GDI_FAILED("RestoreDC");
#if 0
   if (colormap_private != NULL
       && colormap_private->xcolormap->rc_palette
       && colormap_private->xcolormap->stale) {
      SelectPalette(data->xgc, GetStockObject(DEFAULT_PALETTE), FALSE);
      if (!UnrealizeObject(colormap_private->xcolormap->palette))
         WIN32_GDI_FAILED("UnrealizeObject");
   }
#endif
   if (GDK_DRAWABLE_TYPE(drawable) == GDK_DRAWABLE_PIXMAP) {
      if (!DeleteDC(data->xgc))
         WIN32_GDI_FAILED("DeleteDC");
   } else {
      ReleaseDC(data->hwnd, data->xgc);
   }

   if (hpen != NULL)
      if (!DeleteObject(hpen))
         WIN32_GDI_FAILED("DeleteObject");

   if (hbr != NULL)
      if (!DeleteObject(hbr))
         WIN32_GDI_FAILED("DeleteObject");

   if ((data->values_mask & GDK_GC_CLIP_MASK)
       && data->clip_region != NULL
       && (data->
           values_mask & (GDK_GC_CLIP_X_ORIGIN | GDK_GC_CLIP_Y_ORIGIN)))
      OffsetRgn(data->clip_region, -data->clip_x_origin,
                -data->clip_y_origin);
   data->xgc = NULL;
}

HDC
gdk_win32_hdc_get(GdkDrawable * drawable,
                  GdkGC * gc, GdkGCValuesMask usage)
{
   return gdk_gc_predraw(drawable, (GdkGCPrivate *) gc, usage);
}

void
gdk_win32_hdc_release(GdkDrawable * drawable,
                      GdkGC * gc, GdkGCValuesMask usage)
{
   gdk_gc_postdraw(drawable, (GdkGCPrivate *) gc, usage);
}

/* This function originally from Jean-Edouard Lachand-Robert, and
 * available at www.codeguru.com. Simplified for our needs, now
 * handles just one-bit deep bitmaps (in Window parlance, ie those
 * that GDK calls bitmaps (and not pixmaps), with zero pixels being
 * transparent.
 */

/*
 *  BitmapToRegion :  Create a region from the "non-transparent" pixels of
 *  a bitmap
 *  Author :      Jean-Edouard Lachand-Robert
 *  (http://www.geocities.com/Paris/LeftBank/1160/resume.htm), June 1998.
 */

HRGN BitmapToRegion(HBITMAP hBmp)
{
   HRGN hRgn = NULL;
   HDC hMemDC;
   BITMAP bm;

   struct {
      BITMAPINFOHEADER bmiHeader;
#if 1
      WORD bmiColors[2];
#else
      RGBQUAD bmiColors[2];
#endif
   } bmi;
   VOID *pbits8;
   HBITMAP hbm8;
   struct {
      WORD palVersion;
      WORD palNumEntries;
      PALETTEENTRY palPalEntry[2];
   } logpal;
   static HPALETTE bwPalette = NULL;

   HBITMAP holdBmp;
   HDC hDC;

   BITMAP bm8;
   HBITMAP holdBmp2;
   DWORD maxRects;
   RGNDATA *pData;
   BYTE *p8;
   int x, y;
   HRGN h;

   /* Create a B&W palette */
   if (bwPalette == NULL) {
      /* Create a b&w palette */
      logpal.palVersion = 0x300;
      logpal.palNumEntries = 2;
      logpal.palPalEntry[0].peRed =
          logpal.palPalEntry[0].peGreen = logpal.palPalEntry[0].peBlue = 0;
      logpal.palPalEntry[0].peFlags = 0;
      logpal.palPalEntry[1].peRed =
          logpal.palPalEntry[1].peGreen =
          logpal.palPalEntry[1].peBlue = 0xFF;
      logpal.palPalEntry[1].peFlags = 0;
      if ((bwPalette = CreatePalette((LOGPALETTE *) & logpal)) == NULL)
         WIN32_GDI_FAILED("CreatePalette");
   }

   /* Create a memory DC inside which we will scan the bitmap content */
   hMemDC = CreateCompatibleDC(NULL);
   if (!hMemDC) {
      WIN32_GDI_FAILED("CreateCompatibleDC");
      return NULL;
   }

   SelectPalette(hMemDC, bwPalette, FALSE);
   RealizePalette(hMemDC);

   /* Get bitmap size */
   GetObject(hBmp, sizeof(bm), &bm);

   /* Create a 8 bits depth bitmap and select it into the memory DC */
   bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
   bmi.bmiHeader.biWidth = bm.bmWidth;
   bmi.bmiHeader.biHeight = bm.bmHeight;
   bmi.bmiHeader.biPlanes = 1;
   bmi.bmiHeader.biBitCount = 8;
   bmi.bmiHeader.biCompression = BI_RGB;
   bmi.bmiHeader.biSizeImage = 0;
   bmi.bmiHeader.biXPelsPerMeter = 0;
   bmi.bmiHeader.biYPelsPerMeter = 0;
   bmi.bmiHeader.biClrUsed = 2;
   bmi.bmiHeader.biClrImportant = 2;
#if 1
   bmi.bmiColors[0] = 0;
   bmi.bmiColors[1] = 1;
   hbm8 = CreateDIBSection(hMemDC, (BITMAPINFO *) & bmi,
                           DIB_PAL_COLORS, &pbits8, NULL, 0);
#else
   bmi.bmiColors[0].rgbBlue =
       bmi.bmiColors[0].rgbGreen = bmi.bmiColors[0].rgbRed = 0x00;
   bmi.bmiColors[0].rgbReserved = 0x00;

   bmi.bmiColors[1].rgbBlue =
       bmi.bmiColors[1].rgbGreen = bmi.bmiColors[1].rgbRed = 0xFF;
   bmi.bmiColors[0].rgbReserved = 0x00;

   hbm8 = CreateDIBSection(hMemDC, (BITMAPINFO *) & bmi,
                           DIB_RGB_COLORS, &pbits8, NULL, 0);
#endif
   if (!hbm8) {
      WIN32_GDI_FAILED("CreateDIBSection");
      DeleteDC(hMemDC);
      return NULL;
   }

   holdBmp = (HBITMAP) SelectObject(hMemDC, hbm8);

   /* Create a DC just to copy the bitmap into the memory DC */
   hDC = CreateCompatibleDC(hMemDC);
   if (!hDC) {
      WIN32_GDI_FAILED("CreateCompatibleDC #2");
      SelectObject(hMemDC, holdBmp);
      DeleteObject(hbm8);
      DeleteDC(hMemDC);
      return NULL;
   }

   /* Get how many bytes per row we have for the bitmap bits */
   GetObject(hbm8, sizeof(bm8), &bm8);

   /* Hans Breuer found a fix to the long-standing erroneous behaviour
    * on NT 4.0: There seems to be a bug in Win NT 4.0 GDI: scanlines
    * in bitmaps are dword aligned on both Win95 and NT. In the case of
    * a bitmap with 22 bytes worth of width, GetObject above returns
    * with bmWidth == 22. On Win95 bmWidthBytes == 24, as it should be,
    * but on NT is it 22. We need to correct this here.
    */
   bm8.bmWidthBytes = (((bm8.bmWidthBytes - 1) / 4) + 1) * 4;   /* dword aligned!! */

   /* Copy the bitmap into the memory DC */
   holdBmp2 = (HBITMAP) SelectObject(hDC, hBmp);

   if (!BitBlt(hMemDC, 0, 0, bm.bmWidth, bm.bmHeight, hDC, 0, 0, SRCCOPY)) {
      WIN32_GDI_FAILED("BitBlt");
      SelectObject(hDC, holdBmp2);
      SelectObject(hMemDC, holdBmp);
      DeleteObject(hbm8);
      DeleteDC(hMemDC);
      return NULL;
   }
   SelectObject(hDC, holdBmp2);
   DeleteDC(hDC);

   /* For better performances, we will use the ExtCreateRegion()
    * function to create the region. This function take a RGNDATA
    * structure on entry. We will add rectangles by amount of
    * ALLOC_UNIT number in this structure.
    */
#define ALLOC_UNIT  200
   maxRects = ALLOC_UNIT;

   pData = g_malloc(sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects));
   memset(pData, 0, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects));
   pData->rdh.dwSize = sizeof(RGNDATAHEADER);
   pData->rdh.iType = RDH_RECTANGLES;
   pData->rdh.nCount = pData->rdh.nRgnSize = 0;
   SetRect(&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);

   /* Scan each bitmap from bottom to top (the bitmap is inverted vertically) */
   p8 = (BYTE *) pbits8 + (bm8.bmHeight - 1) * bm8.bmWidthBytes;
   for (y = 0; y < bm.bmHeight; y++) {
      /* Scan each bitmap row from left to right */
      for (x = 0; x < bm.bmWidth; x++) {
         /* Search for a continuous range of "non transparent pixels" */
         int x0 = x;
         BYTE *p = p8 + x;
         while (x < bm.bmWidth) {
            if (*p == 0)
               /* This pixel is "transparent" */
               break;
            p++;
            x++;
         }

         if (x > x0) {
            RECT *pr;
            /* Add the pixels (x0, y) to (x, y+1) as a new rectangle
             * in the region
             */
            if (pData->rdh.nCount >= maxRects) {
               maxRects += ALLOC_UNIT;
               pData = g_realloc(pData, sizeof(RGNDATAHEADER)
                                 + (sizeof(RECT) * maxRects));
            }
            pr = (RECT *) & pData->Buffer;
            SetRect(&pr[pData->rdh.nCount], x0, y, x, y + 1);
            if (x0 < pData->rdh.rcBound.left)
               pData->rdh.rcBound.left = x0;
            if (y < pData->rdh.rcBound.top)
               pData->rdh.rcBound.top = y;
            if (x > pData->rdh.rcBound.right)
               pData->rdh.rcBound.right = x;
            if (y + 1 > pData->rdh.rcBound.bottom)
               pData->rdh.rcBound.bottom = y + 1;
            pData->rdh.nCount++;

            /* On Windows98, ExtCreateRegion() may fail if the
             * number of rectangles is too large (ie: >
             * 4000). Therefore, we have to create the region by
             * multiple steps.
             */
            if (pData->rdh.nCount == 2000) {
               HRGN h = ExtCreateRegion(NULL,
                                   sizeof(RGNDATAHEADER) +
                                   (sizeof(RECT) * maxRects), pData);
               if (hRgn) {
                  CombineRgn(hRgn, hRgn, h, RGN_OR);
                  DeleteObject(h);
               } else
                  hRgn = h;
               pData->rdh.nCount = 0;
               SetRect(&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);
            }
         }
      }

      /* Go to next row (remember, the bitmap is inverted vertically) */
      p8 -= bm8.bmWidthBytes;
   }

   /* Create or extend the region with the remaining rectangles */
   h = ExtCreateRegion(NULL, sizeof(RGNDATAHEADER)
                       + (sizeof(RECT) * maxRects), pData);
   if (hRgn) {
      CombineRgn(hRgn, hRgn, h, RGN_OR);
      DeleteObject(h);
   } else
      hRgn = h;

   /* Clean up */
   g_free(pData);
   SelectObject(hMemDC, holdBmp);
   DeleteObject(hbm8);
   DeleteDC(hMemDC);

   return hRgn;
}

#ifdef G_ENABLE_DEBUG

gchar *gdk_win32_cap_style_to_string(GdkCapStyle cap_style)
{
   switch (cap_style) {
#define CASE(x) case x: return #x + strlen ("GDK_CAP_")
      CASE(GDK_CAP_NOT_LAST);
      CASE(GDK_CAP_BUTT);
      CASE(GDK_CAP_ROUND);
      CASE(GDK_CAP_PROJECTING);
#undef CASE
   default:
      return ("illegal GdkCapStyle value");
   }
   /* NOTREACHED */
   return NULL;
}

gchar *gdk_win32_fill_style_to_string(GdkFill fill)
{
   switch (fill) {
#define CASE(x) case x: return #x + strlen ("GDK_")
      CASE(GDK_SOLID);
      CASE(GDK_TILED);
      CASE(GDK_STIPPLED);
      CASE(GDK_OPAQUE_STIPPLED);
#undef CASE
   default:
      return ("illegal GdkFill value");
   }
   /* NOTREACHED */
   return NULL;
}

gchar *gdk_win32_function_to_string(GdkFunction function)
{
   switch (function) {
#define CASE(x) case x: return #x + strlen ("GDK_")
      CASE(GDK_COPY);
      CASE(GDK_INVERT);
      CASE(GDK_XOR);
      CASE(GDK_CLEAR);
      CASE(GDK_AND);
      CASE(GDK_AND_REVERSE);
      CASE(GDK_AND_INVERT);
      CASE(GDK_NOOP);
      CASE(GDK_OR);
      CASE(GDK_EQUIV);
      CASE(GDK_OR_REVERSE);
      CASE(GDK_COPY_INVERT);
      CASE(GDK_OR_INVERT);
      CASE(GDK_NAND);
      CASE(GDK_SET);
#undef CASE
   default:
      return ("illegal GdkFunction value");
   }
   /* NOTREACHED */
   return NULL;
}

gchar *gdk_win32_join_style_to_string(GdkJoinStyle join_style)
{
   switch (join_style) {
#define CASE(x) case x: return #x + strlen ("GDK_JOIN_")
      CASE(GDK_JOIN_MITER);
      CASE(GDK_JOIN_ROUND);
      CASE(GDK_JOIN_BEVEL);
#undef CASE
   default:
      return ("illegal GdkJoinStyle value");
   }
   /* NOTREACHED */
   return NULL;
}

gchar *gdk_win32_line_style_to_string(GdkLineStyle line_style)
{
   switch (line_style) {
#define CASE(x) case x: return #x + strlen ("GDK_LINE_")
      CASE(GDK_LINE_SOLID);
      CASE(GDK_LINE_ON_OFF_DASH);
      CASE(GDK_LINE_DOUBLE_DASH);
#undef CASE
   default:
      return ("illegal GdkLineStyle value");
   }
   /* NOTREACHED */
   return NULL;
}
#endif

---