Combines gdk_visual_get_best_with_depth() and gdk_visual_get_best_with_type().
a bit depth
a visual type
best visual with both @depth and @visual_type, or %NULL if none
Deprecated: Visual selection should be done using gdk_screen_get_system_visual() and gdk_screen_get_rgba_visual()
See Implementation
Combines gdk_visual_get_best_with_depth() and gdk_visual_get_best_with_type().