Description These functions provide access to a shared pool of GdkGC objects. When a new GdkGC is needed, gtk_gc_get() is called with the required depth, colormap and GdkGCValues. If a GdkGC with the required properties already exists then that is returned. If not, a new GdkGC is created. When the GdkGC is no longer needed, gtk_gc_release() should be called.