CFrameWnd and handling WM_GETMINMAXINFO

Jeff_Stong@bio-rad.com
Thursday, April 11, 1996

     Visual C++ 4.0, Windows NT 3.51
     
     I have a CScrollView derived class that will display an image captured 
     from a video camera.  I would like to be able to restrict the size of 
     the enclosing CFrameWnd such that the user could make the frame window 
     smaller than required (the view will pop-up scroll bars as necessary), 
     but not be able to drag or maximize the window to anything larger than 
     the minimum size required to display the entire image.
     
     CFrameWnd::OnGetMinMaxInfo() seems to be the most obvious place to 
     solve the problem.  However, since this is a standard MFC frame window 
     it has all sort of goodies like dialog bars and dockable tool bars 
     which potentially make the calculations difficult.  For obvious 
     reasons, I would like to rely on any code in MFC that may already do 
     most of the work.  What I am really looking for is a method that 
     returns the size required for the frame for a given view size.
     
     Does anyone know the proper CFrameWnd/CScrollView level functions that 
     I could call in order to compute the proper values to place into the 
     MINMAXINFO of CFrameWnd::OnGetMinMaxInfo()?  Or is OnGetMinMaxInfo() 
     the wrong place to solve the problem?  Ideally I would like to solve 
     the problem in my CScrollView-derived class.  I haven't been 
     successful with this approach since the view only gets WM_SIZE 
     messages (no WM_GETMINMAXINFO messages) at which point its really too 
     late to do anything about the window resize operation.
     
     Thanks,
     
     Jeff

---

Glen Okita -- go@svpal.org
Monday, April 15, 1996

CWnd::CalcWindowRect() should return the the window size needed to
contain the view.
                                                               Glen Okita
ti desrever sediT -- Tides reversed it                         go@svpal.org

---

LeRoy Baxter -- lbaxter@cinfo.com
Wednesday, April 17, 1996

Unless you're using high resolution and 'Large Fonts'

----------
From: 	Glen Okita[SMTP:go@svpal.org]
Sent: 	Monday, April 15, 1996 8:17 AM
To: 	mfc-l@netcom.com
Subject: 	Re: CFrameWnd and handling WM_GETMINMAXINFO

CWnd::CalcWindowRect() should return the the window size needed to
contain the view.
                                                               Glen Okita
ti desrever sediT -- Tides reversed it                         go@svpal.org

---

Ted Heatherington -- theather@vcn.bc.ca
Saturday, April 20, 1996

[Mini-digest: 2 responses]

Ummm... I guess I feel dense Glen.  Just HOW do I use this call?  I to have
a CDialog styled view and would like to use WM_MaxMin, but this terse reply
isn't too helpful to a MFC newbie like me.

Ted
====================
>From: Glen Okita 
>
>CWnd::CalcWindowRect() should return the the window size needed to
>contain the view.
>                                                               Glen Okita
>ti desrever sediT -- Tides reversed it                         go@svpal.org
>
>

-----From: "Arguelles, Alix" 


Win95, VC4.0

What if you are using high resolution?  What can you use to assure that   
the window is opened to the appropriate size?

[Moderator's note: I don't think the issue is the resolution as
much as it is the use of large fonts, which are problematic
just about any time you don't let Windows do the size
calculations for you.]

 ----------
From:  owner-mfc-l[SMTP:owner-mfc-l@netcom.com]
Sent:  Wednesday, April 17, 1996 08:59 PM
To:  'mfc-l@netcom.com'
Subject:  RE: CFrameWnd and handling WM_GETMINMAXINFO

Unless you're using high resolution and 'Large Fonts'

---

| Вернуться в корень Архива |