Warning
gtk_theming_engine_state_is_running has been deprecated since version 3.6 and should not be used in newly-written code. 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 FALSE, while 1.0 means
it's closest to being TRUE. This means transition animations will
run from 0 to 1 when state is being set to TRUE and from 1 to 0 when
it's being set to FALSE.
Warning gtk_theming_engine_state_is_running has been deprecated since version 3.6 and should not be used in newly-written code. 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 FALSE, while 1.0 means it's closest to being TRUE. This means transition animations will run from 0 to 1 when state is being set to TRUE and from 1 to 0 when it's being set to FALSE.