Re: Make client area of frame view a certain (fixed) size (AdjustWindowRectEx problem)

David Wilkinson <>
Wed, 30 Jul 2008 17:44:53 -0400
WP wrote:

Doh! You're right, I forgot that completely. The raw Win32 code did that
but I totally forgot it here. Anyway, I'm not completely there yet
because the client area of the frame view is only 396 * 396. First it
was 392*392 but I removed the extended style WS_EX_CLIENTEDGE that was
set in the view's PreCreateWindow. So it seems the view's non-client
area still takes up some space (4 pixels on each side to exact). How do
I account for that or remove it? I need this code to be portable, so I
can't just adjust it for my system. Here are both PreCreateWindow():s now:

BOOL DoubleBufferingMainFrame::PreCreateWindow(CREATESTRUCT& cs)

   CRect rect(0, 0, 400, 400);

   BOOL b = ::AdjustWindowRectEx(&rect,, cs.dwExStyle, TRUE); = abs(rect.left) + abs(rect.right); = abs( + abs(rect.bottom);

   cs.lpszClass = AfxRegisterWndClass(0);

   return TRUE;

BOOL DoubleBufferingChildView::PreCreateWindow(CREATESTRUCT& cs)

   //cs.dwExStyle |= WS_EX_CLIENTEDGE; &= ~WS_BORDER;
   cs.lpszClass = AfxRegisterWndClass(CS_HREDRAW|CS_VREDRAW|CS_DBLCLKS,
   ::LoadCursor(NULL, IDC_ARROW),
reinterpret_cast<HBRUSH>(COLOR_WINDOW+1), NULL);

   return TRUE;

Thanks for the quick replies btw, this newsgroup is really great! Fast,
quality replies - can't ask for more!


If you know the size of the view for a given frame size, you can adjust the
frame size to get the right view size. In your case just add 4 pixels in both

David Wilkinson
Visual C++ MVP

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