Warning
gtk_icon_source_set_state has been deprecated since version 3.10 and should not be used in newly-written code. Use GtkIconTheme instead.
Sets the widget state this icon source is intended to be used
with.
Setting the widget state on an icon source makes no difference
if the state is wildcarded. Therefore, you should usually
call gtk_icon_source_set_state_wildcarded() to un-wildcard it
in addition to calling this function.
Warning gtk_icon_source_set_state has been deprecated since version 3.10 and should not be used in newly-written code. Use GtkIconTheme instead. Sets the widget state this icon source is intended to be used with. Setting the widget state on an icon source makes no difference if the state is wildcarded. Therefore, you should usually call gtk_icon_source_set_state_wildcarded() to un-wildcard it in addition to calling this function.