use GINT_TO_POINTER: Horizontal_Zoom_In_clicked(GtkWidget *widget, gpointer gt) g_signal_connect ((gpointer) Horizontal_Zoom_In, "clicked", G_CALLBACK (Horizontal_Zoom_In_clicked), GINT_TO_POINTER(graph_type));
and GPOINTER_TO_INT(gt) in the callback to get the int value from the pointer. see also http://developer.gnome.org/doc/API/2.0/glib/glib-Type-Conversion-Macros.html gyozo -- When you're not looking at it, this fortune is written in FORTRAN. _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list