[java-gnome-hackers] LifeCycleEvent delete/Destroy

[Mark H. <mh...@ti...>]

Hi,
  The handling of Delete and destroy GtkWidget signals seems odd at the
moment. They both should return boolean values for whether to propagate
the signal further.

At the moment, destroy always returns true and delete always returns
false. 
This seems odd to me, but I am not a Gtk expert. Could somebody please
explain why we do this? What do the events mean to a java application.

One thing I've noticed is that most of the example applications have 
window.addListener(new LifeCycleListener() {
  public void lifeCycleEvent(LifeCycleEvent event) {
    if (event.isOfType(LifeCycleEvent.Type.DESTROY))
      Gtk.mainQuit();
    }
});

When the window is closed (by pressing the close button), the window
disapears, but Gtk.mainQuit is not called, so the application does not
terminate. This can be fixed by looking for the DELETE event also.

Also, how can we write an application so that when the close button is
pressed, a method can be called (e.g. pop up a window asking if changes
should be saved) before the window disappears, and the disappearance of
the window can be determined by the results of that method?
-- 
  .''`. Mark Howard
 : :' :
 `. `'  http://www.tildemh.com 
   `-   mh...@de... | mh...@ti... | mh...@ca...