/* * * Sample Code for Gtk+ Programming in C, 1st Edition, Prentice Hall * * Copyright 2000 - 2002 Syd Logan, All Rights Reserved * * This code is distributed without warranty. You are free to use this * code for any purpose, however, if this code is republished or * redistributed in its original form, as hardcopy or electronically, * then you must include this copyright notice along with the code. * * Questions or comments regarding this code or any bugs it contains can * be directed to the author via e-mail at slogan@cts.com **/#include <gtk/gtk.h>voidPrintAndExit (GtkWidget *widget, char *foo){	if ( foo )		printf( "%s\n", foo );}intmain( int argc, char *argv[] ){	GtkWidget *widget;	GtkButton *button;	GtkObject *object; 	gtk_set_locale (); 	gtk_init (&argc, &argv);	/* widget */	widget = gtk_button_new_with_label ("foo");  gtk_signal_connect (GTK_OBJECT(widget), "destroy",    GTK_SIGNAL_FUNC(PrintAndExit), "widget, object destroy");	gtk_object_destroy( GTK_OBJECT( widget ) );	widget = gtk_button_new_with_label ("foo");  gtk_signal_connect (GTK_OBJECT(widget), "destroy",    GTK_SIGNAL_FUNC(PrintAndExit), "widget, widget destroy");	gtk_widget_destroy( widget );	/* button */	button = (GtkButton *) gtk_button_new_with_label ("foo");  gtk_signal_connect (GTK_OBJECT(button), "destroy",    GTK_SIGNAL_FUNC(PrintAndExit), "button, object destroy");	gtk_object_destroy( GTK_OBJECT( button ) );	button = (GtkButton *) gtk_button_new_with_label ("foo");  gtk_signal_connect (GTK_OBJECT(button), "destroy",    GTK_SIGNAL_FUNC(PrintAndExit), "button, widget destroy");	gtk_widget_destroy( GTK_WIDGET( button ) );	/* object */	object = (GtkObject *) gtk_button_new_with_label ("foo");  gtk_signal_connect (object, "destroy",    GTK_SIGNAL_FUNC(PrintAndExit), "object, object destroy");	gtk_object_destroy( object );	object = (GtkObject *) gtk_button_new_with_label ("foo");  gtk_signal_connect (object, "destroy",    GTK_SIGNAL_FUNC(PrintAndExit), "object, widget destroy");	gtk_widget_destroy( GTK_WIDGET( object ) );	return( 0 );}