Thanks Lindley M French for the answer...
it solve my problem....
only have other question.
Reviewing documentation and found the event
GDK_NOTHING, gtk_widget_add_events,
gtk_widget_set_events for a widget (window), then I
add the event GDK_NOTHING
gtk_widget_set_events (window,GDK_NOTHING);
gtk_widget_add_events (window,GDK_NOTHING);
And connect the event with my function,
gint nothing( GtkWidget *widget,GdkEvent
*event,gpointer data ){
printf("\nPut your source here");
return FALSE;
}
g_signal_connect (G_OBJECT (window),
"GDK_NOTHING",G_CALLBACK (nothing), NULL);
but I get the following warnig
GLib-GObject-WARNING **: gsignal.c:1667: signal
`GDK_NOTHING' is invalid for instance `00CBA0E0'
My question is
how do I use the event?
> It's very simple to use.
>
> After you call that function (and you've called
> gtk_main() or g_main() as well), at some point very
> soon the function you passed will be called with the
> supplied arguments. It will be essentially as if you
> had called the function yourself right there, except
> that (a) if the program is multi-threaded, the
> function will be called in the event-handling thread
> no matter where g_idle_add was called, and (b) it's
> a bit better for performance reasons in some cases.
>
> If the function you're adding is to do a one-time
> task, have it return false and that will be all. If
> it's something that you need to call continuously
> for some reason, have it return true. Be careful: If
> you have an idle function return true when it
> doesn't need to, it will cause GTK to use far more
> CPU time than it would otherwise.
>
> ----- Original Message -----
> From: Moises <ammoises@xxxxxxxxxxxx>
> Date: Sunday, February 17, 2008 5:43 pm
> Subject: Help with call to function
>
> > Thanks for the answer
> >
> > I do not know how to use the function:
> >
> > Guint g_idle_add (GSourceFunc function, gpointer
> > data);
> >
> > Function: function to call
> > Data: data to pass to function.
> > Returns: the ID (greater than 0) of the event
> source.
> >
> > But as I say the widget that uses the function
> when
> > does nothing
> >
> >
> >
> >
>
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>
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