gdkwindow-win32: Remove queue_antiexpose implementation

Since the Win32 code never actually called InvalidateRgn or used the
Win32 update area at all, that meant the only thing that could possibly
invalidate the window was the Win32 window manager as part of scrolling
or resizing, which would also send it a WM_PAINT message.

But the WM_PAINT handling called BeginPaint / EndPaint, which clears the
update area completely! We also draw out-of-band, not directly when
handling WM_PAINT, so there's no way that the update area inside the
Win32 WM would match our local one.

There is no possible way that this queue_antiexpose implementation could
do anything. Remove it.

diff --git a/gdk/win32/gdkwindow-win32.c b/gdk/win32/gdkwindow-win32.c
index e4c93cac4ef969c5d53b0b93be46328ae010c51c..c060184b4c7a92389fef28c02964615ea0311298 100644 (file)
--- a/gdk/win32/gdkwindow-win32.c
+++ b/gdk/win32/gdkwindow-win32.c
@@ -3242,15 +3242,6 @@ static void
 _gdk_win32_window_queue_antiexpose (GdkWindow *window,
                                     cairo_region_t *area)
 {
-  HRGN hrgn = cairo_region_to_hrgn (area, 0, 0);
-
-  GDK_NOTE (EVENTS, g_print ("_gdk_windowing_window_queue_antiexpose: ValidateRgn %p %s\n",
-                            GDK_WINDOW_HWND (window),
-                            _gdk_win32_cairo_region_to_string (area)));
-
-  ValidateRgn (GDK_WINDOW_HWND (window), hrgn);
-
-  DeleteObject (hrgn);
 }
 
 static void