How to get COM's HWND

COMsHWND.md

        HWND prevWindow = NULL;
        HWND hwnd;
        for ( ;; )
        {
            hwnd = FindWindowEx( HWND_MESSAGE, prevWindow, L"OleMainThreadWndClass", NULL );
            if ( !hwnd )
                break;

            if ( GetWindowThreadProcessId( hwnd, NULL ) == GetCurrentThreadId() )
                break;

            prevWindow = hwnd;


            WCHAR className[255];
            *className = 0;
            ::GetClassName( hwnd, className, 255 );
        }

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http://groups.google.com/groups?hl=en&threadm=%23PXlPvuWBHA.1908%40tkmsftngp07&rnum=8&prev=/groups%3Fq%3DHWND_MESSAGE%26hl%3Den%26sa%3DN%26tab%3Dig