The timing information in a gdk.FrameTimings is filled in incrementally as the frame as drawn and passed off to the window system for processing and display to the user. The accessor functions for gdk.FrameTimings can return 0 to indicate an unavailable value for two reasons: either because the information is not yet available, or because it isn't available at all. Once Frame.timingsGetComplete returns TRUE for a frame, you can be certain that no further values will become available and be stored in the gdk.FrameTimings

class FrameTimings

Return Value

Type: bool

TRUE if all information that will be available for the frame has been filled in.