An opaque type that tracks a #CoglFrameCallback and associated user data. A #CoglFrameClosure pointer will be returned from cogl_onscreen_add_frame_callback() and it allows you to remove a callback later using cogl_onscreen_remove_frame_callback().
An opaque type that tracks a #CoglFrameCallback and associated user data. A #CoglFrameClosure pointer will be returned from cogl_onscreen_add_frame_callback() and it allows you to remove a callback later using cogl_onscreen_remove_frame_callback().