Tried to make wxGLCanvas work again. WIP.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@3929 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/win_gtk.h

@@ -55,6 +55,8 @@ struct _GtkMyFixed
   gulong configure_serial;
   gint scroll_x;
   gint scroll_y;
+  
+  gboolean clear_on_draw;
 };
 
 struct _GtkMyFixedClass
@@ -68,9 +70,13 @@ struct _GtkMyFixedClass
 
 guint      gtk_myfixed_get_type        (void);
 GtkWidget* gtk_myfixed_new             (void);
+
 void       gtk_myfixed_set_shadow_type (GtkMyFixed     *myfixed,
 				        GtkMyShadowType  type);
 					
+void       gtk_my_fixed_set_clear      (GtkMyFixed     *myfixed,
+                                        gboolean        clear);		
+					
 void       gtk_myfixed_scroll          	(GtkMyFixed     *myfixed,	
                                          gint         dx,
                                          gint         dy);