BUG: EnumDesktopWindows Might Enumerate the Wrong Desktop

MORE INFORMATION

This bug will affect those applications that attempt to enumerate a desktop immediately after it has been created, or in a scenario where there are currently no child windows of the desktop.

The following code snippet uses GetThreadDesktop() to validate that the correct desktop is being enumerated. Be sure to free any desktop handles opened with GetThreadDesktop() by calling CloseDesktop().

   HDESK hdesk;
   hdesk = GetThreadDesktop( GetCurrentThreadId() );
   EnumDesktopWindows( hdesk, EnumProc, (LPARAM)hdesk );
   .
   .
   .
   return;


   BOOL CALLBACK EnumProc( HWND hwnd, LPARAM lParam )
   {


      DWORD dwThreadId;
      HDESK hdesk;


      dwThreadId = GetWindowThreadProcessId( hwnd, NULL );
      hdesk = GetThreadDesktop( dwThreadId );


      if( hdesk && hdesk != (HDESK)lParam ) {
        return FALSE;
      } else {
        // now certain this is the desktop we want to enumerate
        .
        .
        .
      }


      return TRUE;


   }