Starts updates for an animation. Until a matching call to
gdk_frame_clock_end_updating() is made, the frame clock will continually
request a new frame with the GDK_FRAME_CLOCK_PHASE_UPDATE phase.
This function may be called multiple times and frames will be
requested until gdk_frame_clock_end_updating() is called the same
number of times.
Starts updates for an animation. Until a matching call to gdk_frame_clock_end_updating() is made, the frame clock will continually request a new frame with the GDK_FRAME_CLOCK_PHASE_UPDATE phase. This function may be called multiple times and frames will be requested until gdk_frame_clock_end_updating() is called the same number of times.