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  4. How do I get the handle of a dialog in Visual C

How do I get the handle of a dialog in Visual C

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  • M Maximilien

    Well, GetSafeHwnd() returns a safe handle to the dialog window. do you need something more ?

    This signature was proudly tested on animals.

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    jonsey29847
    wrote on last edited by
    #10

    HWND hwndDlg = GetSafeHwnd(); Is it really that simple? How does GetSafeHwnd() know which window you wish the handle of? Thanks

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    • J jonsey29847

      HWND hwndDlg = GetSafeHwnd(); Is it really that simple? How does GetSafeHwnd() know which window you wish the handle of? Thanks

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      D Offline
      David Crow
      wrote on last edited by
      #11

      jonsey29847 wrote:

      How does GetSafeHwnd() know which window you wish the handle of?

      It's called in the context of a CWnd object.

      "Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

      "Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

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      • J jonsey29847

        So I can use existing code in an application that I developed using Win32 APIs. i.e.SendMessage(HWND, ID, wparam, lparam) MFC "Hides" this from me. However, if I am taking off in wrong direction I would appreciate some guidance here. Thanks

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        David Crow
        wrote on last edited by
        #12

        If you wanted to send a message to some edit control, you could use:

        m_edit.SendMessage(WM_GETTEXTLENGTH, 0, 0);

        or

        ::SendMessage(m_edit.GetSafeHwnd(), WM_GETTEXTLENGTH, 0, 0);

        or

        m_edit.GetWindowTextLength();

        "Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

        "Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

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        • D David Crow

          If you wanted to send a message to some edit control, you could use:

          m_edit.SendMessage(WM_GETTEXTLENGTH, 0, 0);

          or

          ::SendMessage(m_edit.GetSafeHwnd(), WM_GETTEXTLENGTH, 0, 0);

          or

          m_edit.GetWindowTextLength();

          "Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

          "Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

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          jonsey29847
          wrote on last edited by
          #13

          You have struck upon one of the problems I have using MFC. What does m_edit mean and where can I find a list of all the m_whatever? Thanks

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          • J jonsey29847

            You have struck upon one of the problems I have using MFC. What does m_edit mean and where can I find a list of all the m_whatever? Thanks

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            D Offline
            David Crow
            wrote on last edited by
            #14

            jonsey29847 wrote:

            What does m_edit mean and where can I find a list of all the m_whatever?

            It's just an arbitrary name I chose for that code snippet. You may call it whatever you wish.

            "Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

            "Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

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            • D David Crow

              jonsey29847 wrote:

              What does m_edit mean and where can I find a list of all the m_whatever?

              It's just an arbitrary name I chose for that code snippet. You may call it whatever you wish.

              "Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

              "Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

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              J Offline
              jonsey29847
              wrote on last edited by
              #15

              Is it the name I assign using the class wizard?

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              • J jonsey29847

                Is it the name I assign using the class wizard?

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                David Crow
                wrote on last edited by
                #16

                Yes.

                "Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

                "Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

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                • D David Crow

                  Yes.

                  "Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

                  "Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

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                  J Offline
                  jonsey29847
                  wrote on last edited by
                  #17

                  Wow! I can't wait to try it. I just love this website! Thanks.

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                  • J jonsey29847

                    Hello, I am porting a Dialog based application that I used Lcc-Win32 to develop over to Visual C++. How to I get the handle of my Dialog box? Thanks in advance for your help.

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                    ali kanju
                    wrote on last edited by
                    #18

                    associate a class with dialog and use object of that class to access dialog.

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                    • J jonsey29847

                      Hello, I am porting a Dialog based application that I used Lcc-Win32 to develop over to Visual C++. How to I get the handle of my Dialog box? Thanks in advance for your help.

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                      S Offline
                      sujeet
                      wrote on last edited by
                      #19

                      In your dialog class m_hWnd varialbe will give you the handle of your dialog. You can store it as, HWND DialogHandle = m_hWnd ; Regards, Sujeet

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