Warning
gtk_style_context_state_is_running has been deprecated since version 3.6 and should not be used in newly-written code. This function always returns FALSE
Returns TRUE if there is a transition animation running for the
current region (see gtk_style_context_push_animatable_region()).
If progress is not NULL, the animation progress will be returned
there, 0.0 means the state is closest to being unset, while 1.0 means
it's closest to being set. This means transition animation will
run from 0 to 1 when state is being set and from 1 to 0 when
it's being unset.
Warning gtk_style_context_state_is_running has been deprecated since version 3.6 and should not be used in newly-written code. This function always returns FALSE Returns TRUE if there is a transition animation running for the current region (see gtk_style_context_push_animatable_region()). If progress is not NULL, the animation progress will be returned there, 0.0 means the state is closest to being unset, while 1.0 means it's closest to being set. This means transition animation will run from 0 to 1 when state is being set and from 1 to 0 when it's being unset.