/* * * 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>#include <stdio.h>static GtkWidget *button;static voidQuitCallback(GtkWidget *widget, GtkWidget *dialog_window){	gtk_main_quit();	exit( 0 );}voidSetButtonLabel( GtkWidget *button, char *label ){	gtk_object_set( GTK_OBJECT( button ), "GtkButton::label", label, NULL );}static voidClickedCallback(GtkWidget *widget, GtkWidget *dialog_window){	static int which = 0;	static int modCnt = 0;	static char *labels[] = { "Exit", "Dismiss", "Bye!" };	modCnt++;	which++;	if ( which >= sizeof( labels ) / sizeof(char *) ) 		which = 0;	SetButtonLabel( button, labels[which] );		if ( modCnt % 3 == 0 )		gtk_toggle_button_set_mode( GTK_TOGGLE_BUTTON( widget ),			( modCnt % 2 == 0 ? TRUE : FALSE ) );}main( int argc, char *argv[] ){	GtkWidget *dialog_window;	gtk_init( &argc, &argv );	dialog_window = gtk_dialog_new();  gtk_window_position (GTK_WINDOW (dialog_window), GTK_WIN_POS_MOUSE); 	button = gtk_toggle_button_new_with_label ("Refresh"); 	GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);	gtk_window_set_default( GTK_WINDOW( dialog_window ), button ); 	gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dialog_window)->action_area), 		button, TRUE, TRUE, 0); 	gtk_signal_connect (GTK_OBJECT (button), "clicked", 		GTK_SIGNAL_FUNC(ClickedCallback), dialog_window); 	button = gtk_toggle_button_new_with_label ("Quit"); 	gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dialog_window)->action_area), 		button, TRUE, TRUE, 0); 	gtk_signal_connect (GTK_OBJECT (button), "clicked", 		GTK_SIGNAL_FUNC(QuitCallback), dialog_window); 	gtk_widget_show_all (dialog_window);	gtk_main();}