X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/1542ea396a625766c59d683adbb1d613c1344d50..68d4172048cfc0f3e658ef90ff5af926eedfdd57:/src/gtk1/toplevel.cpp

diff --git a/src/gtk1/toplevel.cpp b/src/gtk1/toplevel.cpp
index 52c47e327f..129e4fbb7c 100644
--- a/src/gtk1/toplevel.cpp
+++ b/src/gtk1/toplevel.cpp
@@ -989,7 +989,7 @@ static bool do_shape_combine_region(GdkWindow* window, const wxRegion& region)
         gdk_window_shape_combine_region(window, region.GetRegion(), 0, 0);
 #else
         wxBitmap bmp = region.ConvertToBitmap();
-        bmp.SetMask(new wxMask(bmp, *wxWHITE));
+        bmp.SetMask(new wxMask(bmp, *wxBLACK));
         GdkBitmap* mask = bmp.GetMask()->GetBitmap();
         gdk_window_shape_combine_mask(window, mask, 0, 0);
 #endif
@@ -1002,6 +1002,9 @@ static bool do_shape_combine_region(GdkWindow* window, const wxRegion& region)
 
 bool wxTopLevelWindowGTK::SetShape(const wxRegion& region)
 {
+    wxCHECK_MSG( HasFlag(wxFRAME_SHAPED), FALSE,
+                 _T("Shaped windows must be created with the wxFRAME_SHAPED style."));
+
     GdkWindow *window = NULL;
     if (m_wxwindow)
     {