Retrieves a gdk.frame_timings.FrameTimings object holding timing information for the current frame or a recent frame.
The gdk.frame_timings.FrameTimings object may not yet be complete: see gdk.frame_timings.FrameTimings.getComplete and gdk.frame_clock.FrameClock.getHistoryStart.
the frame counter value identifying the frame to be received
the gdk.frame_timings.FrameTimings object for the specified frame, or null if it is not available
Retrieves a gdk.frame_timings.FrameTimings object holding timing information for the current frame or a recent frame.
The gdk.frame_timings.FrameTimings object may not yet be complete: see gdk.frame_timings.FrameTimings.getComplete and gdk.frame_clock.FrameClock.getHistoryStart.