gdk:frame-clock-history-start (clock)

clock -- a gdk:frame-clock object

The unsigned integer for the frame counter value of the oldest frame that is available in the internal frame history of the frame clock.

The frame clock internally keeps a history of gdk:frame-timings objects for recent frames that can be retrieved with the gdk:frame-clock-timings function. The set of stored frames is the set from the counter values given by the gdk:frame-clock-history-start function and the gdk:frame-clock-frame-counter function, inclusive.