/* * * 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>intDestroyWindow( gpointer data ){  GtkWidget *window = GTK_WIDGET( data );  gdk_window_destroy( window->window );  return FALSE;}voidPopupWindow( GtkWidget *widget, gpointer ignored ) {  GtkWidget *window;  window = gtk_window_new( GTK_WINDOW_TOPLEVEL );  gtk_window_position(GTK_WINDOW (window), GTK_WIN_POS_MOUSE);  gtk_widget_set_usize( window, 100, 100 );  gtk_timeout_add( 1000, DestroyWindow, window );   gtk_widget_show(window);}main( int argc, char *argv[] ){  GtkWidget *button, *dialog_window;  gtk_init( &argc, &argv );  dialog_window = gtk_dialog_new();  gtk_window_position(GTK_WINDOW (dialog_window), GTK_WIN_POS_MOUSE);  button = gtk_button_new_with_label ("Popup Window");  gtk_signal_connect(GTK_OBJECT (button), "clicked",    GTK_SIGNAL_FUNC(PopupWindow), NULL );  gtk_box_pack_start(GTK_BOX (GTK_DIALOG (dialog_window)->action_area),    button, FALSE, FALSE, 0);  gtk_widget_show_all(dialog_window);	  gtk_main();}