Hi,
thanks for the clarification. Now I get the picture. I am familiar with the
wxWidgets library (wrapper of the GTK+), where the propagation with wxButton
works.
But it works due to wxWidgets own event handling system. I was a bit misled
by this.
jan bodnar
On Wed, Apr 2, 2008 at 6:28 AM, varun shrivastava <[EMAIL PROTECTED]>
wrote:
> hi
>
> the GtkButton widget is handling the event and is returning TRUE,
> thats why the event is not getting propagated to parents .
>
> button-press-event is RUN-LAST so first your handler is called which
> returns FALSE,
> than default handler from GtkButton is called which returns true.
>
> Thats why if you connect using g_signal_connect_after than none of your
> handler will get called
>
>
> See gtk_button_button_press handler in gtkbutton.c
>
> bye
> varun
>
> 2008/3/31 vronskij <[EMAIL PROTECTED]>:
>
> > Hi,
> >
> > I have a small code example, It should demonstrate the event propagation
> >
> > in GTK+.
> >
> > I have three widgets. A button, fixed container and a window. I have
> > three
> > callbacks. After I click on the button, I expect a message from all
> > these three widgets. First from the button, then from fixed container and
> > from the window.
> > I must be missing something, cause it is not working. I am getting
> > message only from the button widget.
> >
> > How should I modify the example, so that the code works?
> > Thanks for your suggestions.
> >
> > jan bodnar
> >
> > #include <gtk/gtk.h>
> >
> > static gboolean button_reached(GtkWidget *widget, GdkEvent *event,
> > gpointer data)
> > {
> > g_print("button widget reached");
> >
> > return FALSE;
> > }
> >
> >
> > static gboolean fixed_reached(GtkWidget *widget, GdkEvent *event,
> > gpointer data)
> > {
> > g_print("fixed container reached");
> >
> > return FALSE;
> > }
> >
> >
> > static gboolean window_reached(GtkWidget *widget, gpointer data)
> > {
> > g_print("window widget reached");
> >
> > return FALSE;
> > }
> >
> > int main( int argc, char *argv[])
> > {
> >
> > GtkWidget *window;
> > GtkWidget *fixed;
> > GtkWidget *button;
> >
> > gtk_init(&argc, &argv);
> >
> > window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
> > gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
> > gtk_window_set_default_size(GTK_WINDOW(window), 230, 150);
> > gtk_window_set_title(GTK_WINDOW(window), "Simple");
> > gtk_widget_add_events(window, GDK_BUTTON_PRESS_MASK);
> >
> > fixed = gtk_fixed_new();
> > gtk_widget_add_events(fixed, GDK_BUTTON_PRESS_MASK);
> >
> > button = gtk_button_new_with_label("Button");
> > gtk_fixed_put(GTK_FIXED(fixed), button, 50, 50);
> > gtk_container_add(GTK_CONTAINER(window), fixed);
> >
> > g_signal_connect(G_OBJECT(button), "button-press-event",
> > G_CALLBACK(button_reached), NULL);
> >
> > g_signal_connect(G_OBJECT(fixed), "button-press-event",
> > G_CALLBACK(fixed_reached), NULL);
> >
> > g_signal_connect(G_OBJECT(window), "button-press-event",
> > G_CALLBACK(window_reached), NULL);
> >
> > g_signal_connect_swapped(G_OBJECT(window), "destroy",
> > G_CALLBACK(gtk_main_quit), G_OBJECT(window));
> >
> > gtk_widget_show_all(window);
> >
> > gtk_main();
> >
> > return 0;
> > }
> >
> >
> >
> > _______________________________________________
> > gtk-list mailing list
> > [email protected]
> > http://mail.gnome.org/mailman/listinfo/gtk-list
> >
> >
>
_______________________________________________
gtk-list mailing list
[email protected]
http://mail.gnome.org/mailman/listinfo/gtk-list
