gboolean gdk_region_empty (const GdkRegion *region);
gboolean gdk_region_equal (const GdkRegion *region1,
const GdkRegion *region2);
-gboolean gdk_region_rect_equal (const GdkRegion *region1,
+gboolean gdk_region_rect_equal (const GdkRegion *region,
const GdkRectangle *rectangle);
gboolean gdk_region_point_in (const GdkRegion *region,
int x,