title: WM_EX_COMPOSITED without double-buffering
body: <p>I am trying to implement double-buffering in a Win32 application, so I need the controls of a window to be painted from the backmost-control to the frontmost. As I understand it, <code>WM_EX_COMPOSITED</code> does this, but it also does double-buffering itself<sup>1</sup>. How can I get windows to be painted from bottom to top like <code>WS_EX_COMPOSITED</code> without getting the double buffering along with it?</p>
  
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  <p>I am not using <code>WM_EX_COMPOSITED</code> for double buffering because I think I can do a better job manually and not have flicker with DWM, etc.</p>