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Disable Minimize Box in MDI Child Frame

Posted on 1998-09-10
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Last Modified: 2013-11-20
Hello,

I try to disable the minimize box in one of my MDI child frame.  However, I cannot seem to disable the minimize box.  When I created this mdi child frame, the style I used was dwStyle = WS_CHILD | WS_OVERLAPPED | WS_CAPTION |WS_SYSMENU | WS_THICKFRAME | WS_MINIMIZEBOX; I try to get the system menu of this mdi child frame to do the disabling.  Nothing seems to work.  I need to enable and disable this minimize box depending on certain state.

Thank you,

Jennifer
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Question by:jli
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duneram earned 50 total points
ID: 1322057
IF YOU have the handle to the window you can do this:

(In mfc the attribute (handle of window) is m_hWnd).

   long style;

   style = GetWindowLong(m_hWnd,GWL_STYLE);

    style &= ~WS_MINIMIZEBOX;
   SetWindowLong(m_hWnd, GWL_STYLE,style);
   InvalidateRect( NULL, TRUE);


It's not a matter of getting a menu item here.  All controls in Windows are 'windows' themselves so you just need to be doing the right functionality.



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Expert Comment

by:duneram
ID: 1322058

you can restore the style by doing:


style |= WS_MINIMIZEBOX;
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