would normally come from g_get_current_time(), and
must be greater than or equal to the time passed to
, and must increase or remain
unchanged each time this method is
called. That is, you can't go backward in time; animations only
play forward.
As a shortcut, pass for the current time and g_get_current_time()
will be invoked on your behalf. So you only need to explicitly pass
if you're doing something odd like playing the animation
at double speed.
If this method returns false, there's no need to update the animation
display, assuming the display had been rendered prior to advancing;
if true, you need to call
and update the
display with the new pixbuf.