Pythonwin, DefWindowProc bug?

[Mark Hammond]

Keith Farmer wrote:
> My mistake:
> 
> lr = win32gui.DefWindowProc(self._GetAppBarWnd().GetSafeHwnd(),
>     WM_NCHITTEST,
>     0,
>     self._LowHighWordsToLparam(win32api.GetCursorPos())
>    )
> 
> I'm catching the message with:
>     self._appbarwnd.HookMessage(self._OnWMNCHitTest, WM_NCHITTEST)
> 
> And yet though I return HTBORDER, the edges are still resizeable.  This is
> the C-code I'm trying to replicate:
> 
>  case WM_NCHITTEST:
>     {
>         LRESULT lr = DefWindowProc (hwnd, message, wParam, lParam) ;
> 
>         if (lr == HTBOTTOM || lr == HTBOTTOMLEFT || lr == HTBOTTOMRIGHT)
>             return HTBORDER;
>         else
>             return lr;
>     }

The major difference I see if the call to DefWindowProc.  You seem to be 
passing 0 for wParam, and GetCursorPos() for lParam.

Try passing wParam and lParam exactly as passed to you, as per the C++ code.

Mark.