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  4. Setting minimum size for a CFrameWnd

Setting minimum size for a CFrameWnd

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  • M Offline
    M Offline
    maxmaven
    wrote on last edited by
    #1

    Hi, I'd like to make my CFrameWnd subclass not resize any smaller than a certain size. Everywhere I web-search, I see that the suggested way to do this is: void CWndDerived::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI) { // set the minimum tracking width // and the minimum tracking height of the window lpMMI->ptMinTrackSize.x = 200; lpMMI->ptMinTrackSize.y = 150; } I type this into my (very simple) app, and set a breakpoint at the start of this function. It is never called. Is this method still valid? (under Visual Studio 2005 c++) Thanks, Max

    P D 2 Replies Last reply
    0
    • M maxmaven

      Hi, I'd like to make my CFrameWnd subclass not resize any smaller than a certain size. Everywhere I web-search, I see that the suggested way to do this is: void CWndDerived::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI) { // set the minimum tracking width // and the minimum tracking height of the window lpMMI->ptMinTrackSize.x = 200; lpMMI->ptMinTrackSize.y = 150; } I type this into my (very simple) app, and set a breakpoint at the start of this function. It is never called. Is this method still valid? (under Visual Studio 2005 c++) Thanks, Max

      P Offline
      P Offline
      prasad_som
      wrote on last edited by
      #2

      maxmaven wrote:

      CWndDerived

      Are you sure this class window is window you are trying to resize ? A quick test in simple SDI app, shows result as expected.

      Prasad Notifier using ATL | Operator new[],delete[][^]

      M 1 Reply Last reply
      0
      • M maxmaven

        Hi, I'd like to make my CFrameWnd subclass not resize any smaller than a certain size. Everywhere I web-search, I see that the suggested way to do this is: void CWndDerived::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI) { // set the minimum tracking width // and the minimum tracking height of the window lpMMI->ptMinTrackSize.x = 200; lpMMI->ptMinTrackSize.y = 150; } I type this into my (very simple) app, and set a breakpoint at the start of this function. It is never called. Is this method still valid? (under Visual Studio 2005 c++) Thanks, Max

        D Offline
        D Offline
        David Crow
        wrote on last edited by
        #3

        maxmaven wrote:

        I type this...

        Did you use ClassWizard to add it? Is BEGIN_MESSAGE_MAP() correct?


        "Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

        "Judge not by the eye but by the heart." - Native American Proverb

        M 1 Reply Last reply
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        • P prasad_som

          maxmaven wrote:

          CWndDerived

          Are you sure this class window is window you are trying to resize ? A quick test in simple SDI app, shows result as expected.

          Prasad Notifier using ATL | Operator new[],delete[][^]

          M Offline
          M Offline
          maxmaven
          wrote on last edited by
          #4

          Can you tell me exactly what you did? And are you in Visual Studio 2005, C++? I did: SDI: doesn't work SDI + DocView architecture: doesn't work SDI + Split Window: doesn't work Are you setting anything special? Or adding more than just the OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI) function? Thank you, Max

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          • D David Crow

            maxmaven wrote:

            I type this...

            Did you use ClassWizard to add it? Is BEGIN_MESSAGE_MAP() correct?


            "Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

            "Judge not by the eye but by the heart." - Native American Proverb

            M Offline
            M Offline
            maxmaven
            wrote on last edited by
            #5

            All I did was cut and paste the code into MainFrm.cpp, and add the function to the class declaration in MainFrm.h. Max

            D 1 Reply Last reply
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            • M maxmaven

              Can you tell me exactly what you did? And are you in Visual Studio 2005, C++? I did: SDI: doesn't work SDI + DocView architecture: doesn't work SDI + Split Window: doesn't work Are you setting anything special? Or adding more than just the OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI) function? Thank you, Max

              P Offline
              P Offline
              prasad_som
              wrote on last edited by
              #6

              Have you seen David's[^] reply ? Are you sure macro ON_WM_GETMINMAXINFO is there as messsage map entry ?

              Prasad Notifier using ATL | Operator new[],delete[][^]

              M 1 Reply Last reply
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              • M maxmaven

                All I did was cut and paste the code into MainFrm.cpp, and add the function to the class declaration in MainFrm.h. Max

                D Offline
                D Offline
                David Crow
                wrote on last edited by
                #7

                Then you are missing the entry in BEGIN_MESSAGE_MAP(). It's fine to add the actual code (i.e., that which is in between the curly braces) to your functions/methods, but use ClassWizard to add the prototypes.


                "Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

                "Judge not by the eye but by the heart." - Native American Proverb

                M 1 Reply Last reply
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                • P prasad_som

                  Have you seen David's[^] reply ? Are you sure macro ON_WM_GETMINMAXINFO is there as messsage map entry ?

                  Prasad Notifier using ATL | Operator new[],delete[][^]

                  M Offline
                  M Offline
                  maxmaven
                  wrote on last edited by
                  #8

                  I do not have a message map entry. How do I add one for ON_WM_GETMINMAXINFO? Max

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                  • M maxmaven

                    I do not have a message map entry. How do I add one for ON_WM_GETMINMAXINFO? Max

                    D Offline
                    D Offline
                    David Crow
                    wrote on last edited by
                    #9

                    maxmaven wrote:

                    How do I add one for ON_WM_GETMINMAXINFO?

                    As has already been mentioned, use ClassWizard.


                    "Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

                    "Judge not by the eye but by the heart." - Native American Proverb

                    1 Reply Last reply
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                    • D David Crow

                      Then you are missing the entry in BEGIN_MESSAGE_MAP(). It's fine to add the actual code (i.e., that which is in between the curly braces) to your functions/methods, but use ClassWizard to add the prototypes.


                      "Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

                      "Judge not by the eye but by the heart." - Native American Proverb

                      M Offline
                      M Offline
                      maxmaven
                      wrote on last edited by
                      #10

                      How do I add the message map entry using a wizard? Do I use the "Add Member Function" wizard? Thanks, Max

                      D 1 Reply Last reply
                      0
                      • M maxmaven

                        How do I add the message map entry using a wizard? Do I use the "Add Member Function" wizard? Thanks, Max

                        D Offline
                        D Offline
                        David Crow
                        wrote on last edited by
                        #11

                        Ctrl+W, unless you are using VS200x. Otherwise, see here.


                        "Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

                        "Judge not by the eye but by the heart." - Native American Proverb

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