#GdkFrameClock internally keeps a history of #GdkFrameTimings objects for recent frames that can be retrieved with gdk.frame_clock.FrameClock.getTimings. The set of stored frames is the set from the counter values given by gdk.frame_clock.FrameClock.getHistoryStart and gdk.frame_clock.FrameClock.getFrameCounter, inclusive.
the frame counter value for the oldest frame that is available in the internal frame history of the #GdkFrameClock.
#GdkFrameClock internally keeps a history of #GdkFrameTimings objects for recent frames that can be retrieved with gdk.frame_clock.FrameClock.getTimings. The set of stored frames is the set from the counter values given by gdk.frame_clock.FrameClock.getHistoryStart and gdk.frame_clock.FrameClock.getFrameCounter, inclusive.