   Win 7 Aero flip thumbnail
  Can someone suggest an idea why the thumbnail in Aero Flip (Win+Tab in Windows 7) function, is black for my DirectX9 application, when it is in full screen mode.While the application is windowed mode, the thumbnail is a screenshot of the window and everything is OK.   
  Does it work for other applications like the SDK samples?   ;  The contents of windows get buffered in Aero for several reasons anyway. This buffered data can be used to draw the thumbnails without any noticable performance loss. Fullscreen-Apps not NOT get buffered because doing so would be rather pointless and a waste of resources. Thus no previews at all for ALL Fullscreen-DX-Apps.   