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resizing an MDI parent window

Posted on 1997-07-09
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Last Modified: 2013-11-20
I need to resize the parent window in an MDI app, after
the program has started, so I can't override
PreCreateWindow. I'm displaying an image in the child
window, so I need to wait until I have loaded it to
resize the parent to be exactly the size of the image; is
there a command to resize the main frame?
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Question by:nicholso
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2 Comments
 
LVL 1

Accepted Solution

by:
tser earned 100 total points
ID: 1302517
Try calling the main frame window's member function:
MoveWindow() or SetWindowPos()

You may have to take consideration on the border width of the frame window.
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Expert Comment

by:mueller
ID: 1302518
First obtain a pointer to the child's parent window before attempting to manipulate its size.  Then resize that window as necessary.  If you need to calculate the dimensions of the child window and set the dimensions of the parent window to that, use GetWindowRect() for the child window and set accordingly for the parent.  Here is an example:

// obtain a pointer to the child's parent window
CWnd *pWndParent = GetParent();

// now get size of the current child window (including borders)
CRect rcChildRect;
GetWindowRect( &rcChildRect );

// next set the size of the parent window to that of the child
// NOTE:  the TRUE parameter forces a redraw on the parent
// window
pWndParent->MoveWindow( &rcChildRect, TRUE );

// finally update the parent window
pWndParent->UpdateWindow();


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