how to remove title bar from window

["Sudha C Naidu" <sudhacnaidu rediffmail com>]

 
hello!
i guess this part of the code does the work..i got segmentation fault

code:
      Window xwin=None,ParentWindow=None;
      char * list[1] ;
       int count = 1 ;
       XTextProperty text ;
     
     list[0] = title ;
     app_window=gtk_window_new(GTK_WINDOW_TOPLEVEL);
     gtk_widget_set_usize( GTK_WIDGET(app_window ) ,  238,  290 );
     gtk_window_set_policy(GTK_WINDOW(app_window), FALSE, FALSE, FALSE);
     app_window=set_style(app_window, bg, skyblue, notext, nobutton);
     gtk_container_add(GTK_CONTAINER(app_window), child);

     if( XStringListToTextProperty( list, count, &text ) )
       {    //SEGMENTATION FAULT IS RIGHT  HERE

           xwin = GDK_WINDOW_XWINDOW( GTK_WIDGET( app_window )->window );          XSetWMName( GDK_DISPLAY( ), xwin, &text );
       }
     if( screen == 1 )
            ParentWindow = xwin ;
         if( screen == 2 )
           XReparentWindow( GDK_DISPLAY( ), xwin, ParentWindow, 1, 1