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  4. Modal dialog - Close - ESC

Modal dialog - Close - ESC

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  • S Sarvan AL

    How to prevent a modal dialog from closing when we hit ESC key? Thanks in advance, Sarvan AL

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    vallikumar
    wrote on last edited by
    #2

    Hi While pressing ESC key by default ID_CANCEL(OnCancel) message is calling. So write code inside OnCancel() to prevent this. Check the keypressed and if it is ESC key then dont call CDialog::OnCancel(); regards Vallikumar A

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    • V vallikumar

      Hi While pressing ESC key by default ID_CANCEL(OnCancel) message is calling. So write code inside OnCancel() to prevent this. Check the keypressed and if it is ESC key then dont call CDialog::OnCancel(); regards Vallikumar A

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      Sarvan AL
      wrote on last edited by
      #3

      Thanks Mr Vallikumar. I've not thought of that. Sarvan AL

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      • V vallikumar

        Hi While pressing ESC key by default ID_CANCEL(OnCancel) message is calling. So write code inside OnCancel() to prevent this. Check the keypressed and if it is ESC key then dont call CDialog::OnCancel(); regards Vallikumar A

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        Owner drawn
        wrote on last edited by
        #4

        vallikumar wrote:

        Check the keypressed and if it is ESC key then dont call CDialog::OnCancel()

        OnCancel will be called when Esc is pressed or the Cancel button with the id IDCANCEL is clicked.

        Jesus Loves:rose:

        --Owner Drawn:rose: --Nothing special --Defeat is temporary but surrender is permanent --Never say quits --Jesus is Lord:rose:

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        • S Sarvan AL

          How to prevent a modal dialog from closing when we hit ESC key? Thanks in advance, Sarvan AL

          S Offline
          S Offline
          Stephen Hewitt
          wrote on last edited by
          #5

          The IsDialogMessage API provides this functionality. You would have to filter the messages passed to it - this will not be possible for dialog in general as you have not got access to the message pump. An alternative, if you can't use this technique, would be to use hooks (SetWindowsHookEx). Steve

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          • S Sarvan AL

            How to prevent a modal dialog from closing when we hit ESC key? Thanks in advance, Sarvan AL

            S Offline
            S Offline
            Stephen Hewitt
            wrote on last edited by
            #6

            The other guys have a point - My solution was like killing a gnat with a sledgehammer. Perhaps just use the GetAsyncKeyState to see if the escape key is down in a OnCancel overide.

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            • S Sarvan AL

              How to prevent a modal dialog from closing when we hit ESC key? Thanks in advance, Sarvan AL

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              Rajesh R Subramanian
              wrote on last edited by
              #7

              The simplest solution is to override the PreTranslateMessage()! Within the handler, write this code...if(pMsg->message == WM_KEYDOWN && pMsg->wParam == VK_ESCAPE) wParam = NULL; //yeah you read it right!
              Simple as pie :) Regards, Rajesh R. Subramanian You have an apple and me too. We exchange those and We have an apple each. You have an idea and me too. We exchange those and We have two ideas each.

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              • S Stephen Hewitt

                The IsDialogMessage API provides this functionality. You would have to filter the messages passed to it - this will not be possible for dialog in general as you have not got access to the message pump. An alternative, if you can't use this technique, would be to use hooks (SetWindowsHookEx). Steve

                O Offline
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                Owner drawn
                wrote on last edited by
                #8

                :omg::wtf:

                Jesus Loves:rose:

                --Owner Drawn:rose: --Nothing special --Defeat is temporary but surrender is permanent --Never say quits --Jesus is Lord:rose:

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                • R Rajesh R Subramanian

                  The simplest solution is to override the PreTranslateMessage()! Within the handler, write this code...if(pMsg->message == WM_KEYDOWN && pMsg->wParam == VK_ESCAPE) wParam = NULL; //yeah you read it right!
                  Simple as pie :) Regards, Rajesh R. Subramanian You have an apple and me too. We exchange those and We have an apple each. You have an idea and me too. We exchange those and We have two ideas each.

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                  Stephen Hewitt
                  wrote on last edited by
                  #9

                  Ladies and gentlemen, we have a winner. It's one of those solutions that once you hear, you feel stupid for not thinking of (assuming MFC is beging used). Steve

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                  • S Stephen Hewitt

                    Ladies and gentlemen, we have a winner. It's one of those solutions that once you hear, you feel stupid for not thinking of (assuming MFC is beging used). Steve

                    R Offline
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                    Rajesh R Subramanian
                    wrote on last edited by
                    #10

                    LOL man. that made you dig deep to set a system-wide hook? It does happen, but. Regards, Rajesh R. Subramanian. You have an apple and me too. We exchange those and We have an apple each. You have an idea and me too. We exchange those and We have two ideas each.

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                    • R Rajesh R Subramanian

                      LOL man. that made you dig deep to set a system-wide hook? It does happen, but. Regards, Rajesh R. Subramanian. You have an apple and me too. We exchange those and We have an apple each. You have an idea and me too. We exchange those and We have two ideas each.

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                      Stephen Hewitt
                      wrote on last edited by
                      #11

                      I would have only set a thread local hook - But regardless your solution is still the way to go. Steve

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                      • S Sarvan AL

                        How to prevent a modal dialog from closing when we hit ESC key? Thanks in advance, Sarvan AL

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                        Michael Dunn
                        wrote on last edited by
                        #12

                        See the FAQ 7.4 How do I prevent a dialog from closing when the user presses Enter or Esc?[^] --Mike-- Visual C++ MVP :cool: LINKS~! Ericahist | NEW!! PimpFish | CP SearchBar v3.0 | C++ Forum FAQ Shots do not hurt other players... yet

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                        • R Rajesh R Subramanian

                          The simplest solution is to override the PreTranslateMessage()! Within the handler, write this code...if(pMsg->message == WM_KEYDOWN && pMsg->wParam == VK_ESCAPE) wParam = NULL; //yeah you read it right!
                          Simple as pie :) Regards, Rajesh R. Subramanian You have an apple and me too. We exchange those and We have an apple each. You have an idea and me too. We exchange those and We have two ideas each.

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                          Prakash Nadar
                          wrote on last edited by
                          #13

                          Have you ever made a pie before?


                          -Prakash

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                          • S Stephen Hewitt

                            I would have only set a thread local hook - But regardless your solution is still the way to go. Steve

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                            Prakash Nadar
                            wrote on last edited by
                            #14

                            no hooks are needed to do this.


                            -Prakash

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                            • S Stephen Hewitt

                              The other guys have a point - My solution was like killing a gnat with a sledgehammer. Perhaps just use the GetAsyncKeyState to see if the escape key is down in a OnCancel overide.

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                              S Douglas
                              wrote on last edited by
                              #15

                              Going after a gnat with a sledgehammer is always fun! :)


                              ZeePain! wrote:

                              This seems like one of those programs that started small, grew incrementally, building internal pressure, and finally barfed all over its source code sneakers. Or something.

                              thedailywtf.com[^]

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                              • P Prakash Nadar

                                no hooks are needed to do this.


                                -Prakash

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                                Stephen Hewitt
                                wrote on last edited by
                                #16

                                I think we've established that - PreTranslateMessage was the best solution - Assuming we're using MFC. Steve

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                                • S Stephen Hewitt

                                  I think we've established that - PreTranslateMessage was the best solution - Assuming we're using MFC. Steve

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                                  Prakash Nadar
                                  wrote on last edited by
                                  #17

                                  PreTranslateMessage is good but did you consider http://www.codeproject.com/script/comments/forums.asp?msg=1338886&forumid=1647#xx1338886xx[^]


                                  -Prakash

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                                  • P Prakash Nadar

                                    PreTranslateMessage is good but did you consider http://www.codeproject.com/script/comments/forums.asp?msg=1338886&forumid=1647#xx1338886xx[^]


                                    -Prakash

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                                    toxcct
                                    wrote on last edited by
                                    #18

                                    much better, and very simple !!! thanks to mickael...


                                    TOXCCT >>> GEII power
                                    [toxcct][VisualCalc 2.20][VCalc 3.0 soon...]

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                                    • T toxcct

                                      much better, and very simple !!! thanks to mickael...


                                      TOXCCT >>> GEII power
                                      [toxcct][VisualCalc 2.20][VCalc 3.0 soon...]

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                                      Prakash Nadar
                                      wrote on last edited by
                                      #19

                                      toxcct wrote:

                                      thanks to mickael...

                                      no doubt. :)


                                      -Prakash

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                                      • P Prakash Nadar

                                        PreTranslateMessage is good but did you consider http://www.codeproject.com/script/comments/forums.asp?msg=1338886&forumid=1647#xx1338886xx[^]


                                        -Prakash

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                                        Stephen Hewitt
                                        wrote on last edited by
                                        #20

                                        That approach seemed to stop the dialog box from begin closed by any means so I ruled it out. I don't actually remember him saying he uses MFC, but that seems to be assumed in this forum. I try to steer clear of MFC in my own projects although I use it extensively at work. The MFC source code is a valuable resource however. Steve

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                                        • S Stephen Hewitt

                                          That approach seemed to stop the dialog box from begin closed by any means so I ruled it out. I don't actually remember him saying he uses MFC, but that seems to be assumed in this forum. I try to steer clear of MFC in my own projects although I use it extensively at work. The MFC source code is a valuable resource however. Steve

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                                          Prakash Nadar
                                          wrote on last edited by
                                          #21

                                          Stephen Hewitt wrote:

                                          That approach seemed to stop the dialog box from begin closed by any means so I ruled it out.

                                          you dont put for both onok and oncancel, just the oncancel will do in this case.


                                          -Prakash

                                          S R 2 Replies Last reply
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