gboolean advance ( GdkPixbufAnimationIter* iter, const GTimeVal* current_time )
Possibly advances an animation to a new frame.
Chooses the frame based on the start time passed to gdk_pixbuf_animation_get_iter().
current_time would normally come from g_get_current_time(), and
must be greater than or equal to the time passed to
gdk_pixbuf_animation_get_iter(), and must increase or remain
unchanged each time
called. That is, you can’t go backward in time; animations only
As a shortcut, pass
NULL for the current time and
will be invoked on your behalf. So you only need to explicitly pass
current_time if you’re doing something odd like playing the animation
at double speed.
If this function returns
FALSE, there’s no need to update the animation
display, assuming the display had been rendered prior to advancing;
TRUE, you need to call
and update the display with the new pixbuf.
The argument can be
The data is owned by the caller of the function.