setStateFlags
Turns on flag values in the current widget state.
Typical widget states are insensitive, prelighted, etc.
This function accepts the values %GTK_STATE_FLAG_DIR_LTR and %GTK_STATE_FLAG_DIR_RTL but ignores them. If you want to set the widget's direction, use method@Gtk.Widget.set_direction.
This function is for use in widget implementations.
Parameters
flags
State flags to turn on
clear
Whether to clear state before turning on @flags