Reurns the presentation time. This is the time at which the frame
became visible to the user.
Return: the time the frame was displayed to the user, in the
timescale of g_get_monotonic_time(), or 0 if no presentation
time is available. See gdk_frame_timings_get_complete()
Reurns the presentation time. This is the time at which the frame became visible to the user.
Return: the time the frame was displayed to the user, in the timescale of g_get_monotonic_time(), or 0 if no presentation time is available. See gdk_frame_timings_get_complete()