Re: How do I pass a widget pointer to a function/callback?

[Tristan Van Berkom <vantr touchtunes com>]

Jay Barnes wrote:
> g_signal_connect (G_OBJECT (button), "enter",
>                       G_CALLBACK (enter_button), (gpointer) box);

Are you sure you want to hook on to "enter" from the
GtkButtonClass or do you really want "enter-notify-event"
from GtkWidgetClass (the raw form of "enter") ?

Note also that a mixup of these event will cause a segfault
because of the different prototypes:

http://developer.gnome.org/doc/API/2.0/gtk/GtkButton.html#GtkButton-enter

http://developer.gnome.org/doc/API/2.0/gtk/GtkWidget.html#GtkWidget-enter-notify-event

i.e.

gtk_widget_hide(GTK_WIDGET( (GdkEventCrossing *)gdk_event ) );

is a probable segfault.

HTH,
                  -Tristan