Ooops I forgot:
bool
on_my_toplevel_delete_handler( GdkEventAny* G_GNUC_UNUSED )
{
/* do whatever you want to do when the user presses ALT+F4, clicks 'x'
or whatever other means the user uses to close the window*/
return true; // --> IMPORTANT <--
}
int main( int argc, char* argv[])
{
Gtk::Main kit (argc, argc);
Gtk::Window my_toplevel ;
// some other code to setup the app in between
my_toplevel.signal_delete_event().connect( sigc::ptr_fun(
&on_my_toplevel_delete_handler ), true /* important! */ );
my_toplevel.show();
kit.run();
}
2009/12/14 Milosz Derezynski <[email protected]>
> That problem is simple to solve but a little difficult to explain and
> expand on depending on how your setup works.
>
> If you use this mechanism in your app:
>
> Gtk::Main kit (argc, argc);
> Gtk::Window my_toplevel ;
> // some other code to setup the app in between
> kit.run( my_toplevel );
>
> then the ALT+F4 will be handled by the Gtk::Main instance.
>
> Let me expand on this:
>
> What happens when you press ALT+F4 on a window, or click the 'x' in the
> titlebar, or use any other mechanism the window manager employs for
> "closing" a window is that you cause a "delete" event to be emitted for that
> particular window. That event in itself does nothing, but Gtk::Main run with
> a window as argument is coded so that it hides the window, possibly even
> destroys (unrefs?) the main window instance and exits the Gtk+ main loop.
>
> If you don't do it like above, but like this:
>
> Gtk::Main kit (argc, argc);
> Gtk::Window my_toplevel ;
> // some other code to setup the app in between
> my_toplevel.show();
> kit.run();
>
> you retain full control on what to do when a delete-event occurs. See this
> documentation:
> http://library.gnome.org/devel/gtkmm/unstable/classGtk_1_1Widget.html#aa97a4453ec12f7fce163353c2bcaf580
>
> You have two ways of dealing with this and avoiding the window to be hidden
> or actually anything happening at all.
>
> The first is, you derive from Gtk::Window and override on_delete_event:
>
> class MyOwnWindow : public Gtk::Window
> {
> protected:
>
> virtual bool
> on_delete_event( GdkEventAny* G_GNUC_UNUSED )
> {
> /* do whatever you want to do when the user presses ALT+F4,
> clicks 'x' or whatever other means the user uses to close the window*/
>
> return true; // important
> }
> };
>
> The other way is to connect to delete_event(), but using true as the 2nd
> argument to connect() to indicate that you want it to be called before the
> default signal handlers will be called: (see
> http://library.gnome.org/devel/gtkmm/unstable/classGtk_1_1Widget.html#a6b266f24d662c145fa301ca0bd011716)
>
> bool
> on_my_toplevel_delete_handler( GdkEventAny* G_GNUC_UNUSED )
> {
> /* do whatever you want to do when the user presses ALT+F4, clicks 'x'
> or whatever other means the user uses to close the window*/
> }
>
> int main( int argc, char* argv[])
> {
> Gtk::Main kit (argc, argc);
> Gtk::Window my_toplevel ;
> // some other code to setup the app in between
> my_toplevel.signal_delete_event().connect( sigc::ptr_fun(
> &on_my_toplevel_delete_handler ), true /* important! */ );
> my_toplevel.show();
> kit.run();
> }
>
> That is basically it.
>
> 2009/12/11 Robert Hildebrandt <[email protected]>
>
> Hi,
>> I want to disable the Alt+F4 shortcut on a window which has an progressbar
>> for an not interruptable process.
>> I know how to do it on Win32 - is there a also way to disable it with
>> Gtmm?
>> lG Robert
>> _______________________________________________
>> gtkmm-list mailing list
>> [email protected]
>> http://mail.gnome.org/mailman/listinfo/gtkmm-list
>>
>
>
>
> --
> Please note that according to the German law on data retention,
> information on every electronic information exchange with me is
> retained for a period of six months.
> [Bitte beachten Sie, dass dem Gesetz zur Vorratsdatenspeicherung zufolge
> jeder elektronische Kontakt mit mir sechs Monate lang gespeichert wird.]
>
--
Please note that according to the German law on data retention,
information on every electronic information exchange with me is
retained for a period of six months.
[Bitte beachten Sie, dass dem Gesetz zur Vorratsdatenspeicherung zufolge
jeder elektronische Kontakt mit mir sechs Monate lang gespeichert wird.]
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