Changes multihead reorganizing code for win32 support, mostly from a patch

Wed Jun  5 18:34:47 2002  Owen Taylor  <otaylor@redhat.com>

	Changes multihead reorganizing code for win32 support,
	mostly from a patch by Hans Breuer.

	* gdk/gdkcolor.c gdk/x11/gdkcolor-x11.c gdk/gdkcursor.c
	  gdk/x11/gdkcursor-x11.c gdk/gdkevents.c gdk/x11/gdkevents-x11.c
	  gdk/gdkfont.c gdk/x11/gdkfont-x11.c gdk/gdkkeys.c
	  gdk/x11/gdkkeys-x11.c gdk/gdkimage.c gdk/x11/gdkimage-x11.c
	  gdk/gdkscreen.c gdk/x11/gdkmain-x11.c
	  gdk/gdkdisplay.c gdk/gdkevents-x11.c gdk/gdkpango.c
	  gdk/x11/gdkpango-x11.c gdk/gdkselection.c
	  gdk/x11/gdkselection-x11.c gdk/gdkwindow.c
	  gdk/x11/gdkwindow-x11.c gdk/gdkvisual.c gdk/x11/gdkvisual-x11.c:
	  Move port-independent singlehead wrapper functions into
	  port-independent part of GDK. (#80009)

	* gdk/win32/gdkcolor-win32.c gdk/win32/gdkcursor-win32.c
	  gdk/win32/gdkevents-win32.c gdk/win32/gdkfont-win32.c
	  gdk/win32/gdkimage-win32.c gdk/win32/gdkkeys-win32.c
	  gdk/win32/gdkmain-win32.c gdk/win32/gdkproperty-win32.c
	  gdk/win32/gdkselection-win32.c gdk/win32/gkwindow-win32.c:
	Turn singlehead functions into "multihead" functions that ignore
	their GdkDisplay or GdkScreen arguments.

	* gdk/win32/gdkdrawable-win32.c gdk/win32/gdkevents-win32.c
	gdk/win32/gdkinput-win32.c gdk/win32/gdkprivate-win32.h:
	Misc multihead-compatibility changes.

	* gtk/gtk.def gdk/gdk.def: Update for multihead functions.

	* gdk/gdkcolormap.h gdk/gdkvisual.h gdk/x11/gdkcolormap-x11.c
	gdk/x11/gdkvisual-x11.c: Remove the screen fields
	from the public parts of the colormap/visual structures, add accessors
	instead.

	* gdk/gdkpixbuf-render.c gdk/gdkpixmap.c gdk/gdkrgb.c
	  gdk/x11/gdkcolormap-x11.c gdk/x11/gdkimage-x11.c
	  gdk/x11/gdkimage-x11.c gdk/x11/gdkprivate-x11.h gtk/gtkgc.c
	  gtk/gtkstyle.c gtk/gtkwidget.c: Use accessors to get the screen
	for colormaps, visuals; move the fields into the private
	structures for the x11 backend.

	* gdk/gdkdisplay.[ch] gdk/x11/gdkdisplay-x11.[ch]
	  gdk/gdkscreen.[ch] gdk/x11/gdkscreen-x11.c:
	Remove virtualization of screen and display functions.
	(#79990, patch from Erwann Chenede)

	* gdk/win32/gdkdisplay-x11.c gdk/win32/gdkscreen-win32.c
	gdk/win32/{Makefile.am, makefile.msc, makefile.mingw}:
	New files containing stub implementations of Display,
	Screen functions.

	* gdk/x11/gdkscreen-x11.[ch] gdk/x11/gdkdisplay-x11.[ch]
	gdk/x11/gdkx.h: Clean up function exports and what
	headers they are in. (#79954)

	* gdk/x11/gdkx.h: Fix macro that was referring to a non-existant
	screen->screen_num. (In the patch for #79972, Erwann Chenede)

	* gdk/gdkscreen.c gdk/gdkwindow.c gdk/x11/gdkinternals.h
	 gdk/x11/gdkscreen-x11.c: Fix gdk_screen_get_window_at_pointer()
	to use window hooks. (#79972, patch partly from Erwann Chenede)

	* gdk/x11/gdkdisplay-x11.c gdk/x11/gdkevents-x11.c: Fix
	some warnings.

gdk/win32/gdkvisual-win32.c

@@ -28,6 +28,7 @@
 #include <stdlib.h>
 
 #include "gdkvisual.h"
+#include "gdkscreen.h" /* gdk_get_default_screen() */
 #include "gdkprivate-win32.h"
 
 static void  gdk_visual_decompose_mask (gulong     mask,
@@ -300,8 +301,10 @@ gdk_visual_get_best_type (void)
 }
 
 GdkVisual*
-gdk_visual_get_system (void)
+gdk_screen_get_system_visual (GdkScreen *screen)
 {
+  g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
+
   return ((GdkVisual*) system_visual);
 }
 
@@ -356,11 +359,19 @@ gdk_query_visual_types (GdkVisualType **visual_types,
 }
 
 GList*
-gdk_list_visuals (void)
+gdk_screen_list_visuals (GdkScreen *screen)
 {
   return g_list_append (NULL, (gpointer) system_visual);
 }
 
+GdkScreen *
+gdk_visual_get_screen (GdkVisual *visual)
+{
+  g_return_val_if_fail (GDK_IS_VISUAL (visual), NULL);
+
+  return gdk_get_default_screen ();
+}
+
 static void
 gdk_visual_decompose_mask (gulong  mask,
 			   gint   *shift,