//创建窗口
GtkWidget *CreateMenuMain()                                             
 {
     GtkWidget *window;
     GtkWidget *button;       
     GtkWidget *fixed;
     window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
     char title[] = "test";
     gtk_window_set_title(window,title);
     gtk_widget_set_usize(GTK_WINDOW(window),500,400);
     change_background(window,500,400,"play1.jpg");
     gtk_signal_connect(GTK_OBJECT(window),"delete_event",G_CALLBACK(gtk_    main_quit),NULL);
      
      button = gtk_button_new_with_label("切换菜单");
      gtk_widget_set_usize(GTK_BUTTON(button),100,100) 
      fixed = gtk_fixed_new();
      gtk_fixed_put(GTK_FIXED(fixed),button);
      gtk_container_add(GTK_CONTAINER(window),fixed);
      gtk_fixed_put(GTK_FIXED(fixed),button,250,200);
     gtk_signal_connect(G_OBJECT(button),"clicked",G_CALLBACK(button_deal),fixed);
     gtk_widget_show_all(window);      
 }  
 //按钮的回调函数
void button_deal(GtkWidget *button,gpointer)
{
   GtkFixed *fixed_del = (GtkFixed *)data//进行类型强转
  gtk_container_remove(GTK_CONTAINER(window),fixed_del);
  GtkWidget *fixed;
  fixed = gtk_fixed_new();
  gtk_container_add(GTK_CONTAINER(window),fixed);
  gtk_widget_show_all(window);
}