The timing information in a #GdkFrameTimings is filled in
incrementally as the frame as drawn and passed off to the
window system for processing and display to the user. The
accessor functions for #GdkFrameTimings can return 0 to
indicate an unavailable value for two reasons: either because
the information is not yet available, or because it isn't
available at all. Once gdk_frame_timings_get_complete() returns
%TRUE for a frame, you can be certain that no further values
will become available and be stored in the #GdkFrameTimings.
The timing information in a #GdkFrameTimings is filled in incrementally as the frame as drawn and passed off to the window system for processing and display to the user. The accessor functions for #GdkFrameTimings can return 0 to indicate an unavailable value for two reasons: either because the information is not yet available, or because it isn't available at all. Once gdk_frame_timings_get_complete() returns %TRUE for a frame, you can be certain that no further values will become available and be stored in the #GdkFrameTimings.