Hi, 2010/11/24 Brian Tietz <sdbti...@yahoo.com>: > I am creating two widget subclasses, one which is a subclass of GtkContainer > and one which is a subclass of GtkButton. Both need to receive the > enter-notify signal. I can successfully obtain the enter-notify signal fot > GtkButton in my_button_subclass_init: > > g_gtk_button_mouse_enter_notify_event = widget_class->enter_notify_event; > widget_class->enter_notify_event = my_button_subclass_enter_notify_event; > > That function does get called, I do my thing, and then call the GtkButton > class version. When I try to do the same thing for my GtkContainer subclass > though, it doesn't happen. I more or less understand this: my GtkContainer > subclass is GTK_NO_WINDOW, and according to the Gtk docs I need to put it > inside of a GtkEventBox. Fair enough. But I am studying gtkbutton.c so see > how to do this right and to copy its methodology, and it isn't creating > GtkEventBox. I found a clue in gtk_button_realize: it's calling > gdk_window_new, so it seems that GtkButton has its own GdkWindow, which would > explain why it received enter-notify events. Fair enough. Here's the weird > part though. I found that GtkButton has the GTK_NO_WINDOW flag set! Any > help in understanding these behaviors and observations would be appreciated.
You need to call gtk_widget_add_events() on your widget and add the event GDK_ENTER_NOTIFY_MASK. http://library.gnome.org/devel/gtk/stable/GtkWidget.html#gtk-widget-add-events http://library.gnome.org/devel/gdk/2.22/gdk-Events.html#GdkEventMask HTH Kind Regards -- Mike _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
