#include <hmg.ch> 
  
 Function Main 
  
    define window win_1 at 0, 0 width 300 height 200 main 
       define button b 
          row 40 
          col 20 
          width 220 
          caption 'Click here to update Desktop' 
          action UpdateDeskTop() 
       end button 
       on key ESCAPE action thiswindow.release 
    end window 
    win_1.center 
    win_1.activate 
  
 Return nil 
  
 #pragma BEGINDUMP 
  
 #include "windows.h" 
 #include "hbapi.h" 
  
 static HWND GetDeskTopListView(void); 
  
 HB_FUNC ( UPDATEDESKTOP ) 
 { 
 	HWND hListView = GetDeskTopListView(); 
  
 	SendMessage( hListView, WM_SETTINGCHANGE, 0, 0 ); 
 }  
  
 static HWND GetDeskTopListView() 
 { 
 	static HWND hKnownListView=0; 
 	HWND hDesktop, hListView; 
  
 	hDesktop = FindWindowEx( FindWindow("Progman", 0), 0, "SHELLDLL_DefView", 0 ); 
 	hListView = FindWindowEx( hDesktop, 0, "SysListView32", 0 ); 
  
 	if (hListView) 
 		hKnownListView = hListView; 
 	else 
 		hListView = hKnownListView; 
  
 	return hListView; 
 } 
  
 #pragma ENDDUMP