gtk/style.go
func (v *StyleContext) SetState(state StateFlags) {
	C.gtk_style_context_set_state(v.native(), C.GtkStateFlags(state))
}
func (v *StyleContext) SetState(state StateFlags) {
	C.gtk_style_context_set_state(v.native(), C.GtkStateFlags(state))
}
// SetState is a wrapper around gtk_style_context_set_state().