+ gtk_widget_add_events( GTK_WIDGET(textview), GDK_BUTTON_RELEASE_MASK );
+ win->mouse_click_handler = g_signal_connect_after( G_OBJECT(textview), "button-release-event", G_CALLBACK(on_window_button_release_event), win );
+ g_signal_handler_block( G_OBJECT(textview), win->mouse_click_handler );
+