Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!helios!cs.tamu.edu
From: tony@cs.tamu.edu (Tony Encarnacion)
Newsgroups: comp.windows.ms.programmer
Subject: Help on GetClientRect function
Message-ID: <11736@helios.TAMU.EDU>
Date: 2 Feb 91 21:44:27 GMT
Sender: usenet@helios.TAMU.EDU
Distribution: usa
Organization: Computer Science Department, Texas A&M University
Lines: 24

I have been trying to use GetClientRect function with no success.
I hope somebody can explain what I have been doing wrong.  The code 
is given below (hWnd is actually a child window, a menu item similar
to the Word-for-Windows' menu below the standard menu bar).  Thanks.

long FAR PASCAL menu_proc (HWND hWnd, unsigned iMessage,
                        WORD wParam, LONG lParam)
{
    HDC hDC;
    LPRECT lpRect;

    switch (iMessage)
    {
            ...
       case WM_RBUTTONDOWN:
            GetClientRect (hWnd, lpRect);  /* <<-- this is where it bombs */
            hDC = GetDC (hWnd);            /* out; */
            InvertRect (hDC, lpRect);      
            ReleaseDC (hWnd, hDC);
            break;
            ...
    };

}