Question about delete_event_impl

["J. Baltasar Garcia Perez-Schofield" <jbgarcia uvigo es>]

	Hi, there !

	I'm using Gtkmm 2.4 for a new project, with the interface classes
generated by Glade. My problem is that I want to intercept the closing
event of a window, and I've read that you can simply override the
following method in your window:

	gint delete_event_impl(GdkEventAny *);

	So I have my class VentanaPpal inheriting from VentanaPpal_Glade which
inherits from Gtk::Window as well, and then I introduce the line above
in the .h file and implement the method in the .cpp file: 

gint VentanaPpal::delete_event_impl(GdkEventAny *)
{
	if ( askYesNo( "Are you sure?" ) )
	{
		if ( getCurrentDocument() != NULL ) {
			saveCurrentDocument();
		}
		
		Gtk::Main::quit();
		return false;
	}

	return true;
}

	Not very complex/specialized code. Also, the "exit" menu option signal
handle calls delete_event_impl() function.

	Once the application is running, selecting the "exit" menu option makes
the application to exit correctly, asking the user whether he or she is
sure or not. However, if I close the window, it just finishes its
execution.

	The documentation says that when a window is about to be closed, the
signal handle for delete is called, as well as the delete_event_impl()
method.

	Where's my error ?

	I also tried to connect a signal manually, in the constructor of
VentanaPpal_Glade:

	signal_delete_event().connect(SigC::slot(*this,
&VentanaPpal_glade::on_close), false);

	However, it then complains about functors.h not ignoring a void value
(I suppose it has to do with the template receiving the method pointer).

	Regards,

		Baltasar



--

PBC -- J. Baltasar García Perez-Schofield
jbgarcia en uvigo de es  http://webs.uvigo.es/jbgarcia/
Dep. Informática, Universidad de Vigo, España (Spain)