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.
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