get_history_start
Description:
Returns the frame counter for the oldest frame available in history.
`GdkFrameClock` internally keeps a history of `GdkFrameTimings` objects for recent frames that can be retrieved with [ method@Gdk.FrameClock.get_timings]. The set of stored frames is the set from the counter values given by [ method@Gdk.FrameClock.get_history_start] and [method@Gdk.FrameClock.get_frame_counter], inclusive.
Parameters:
| this |
a `GdkFrameClock` |
Returns:
|
the frame counter value for the oldest frame that is available in the internal frame history of the `GdkFrameClock` |