Modal dialog - Close - ESC
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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
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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How to prevent a modal dialog from closing when we hit ESC key? Thanks in advance, Sarvan AL
The
IsDialogMessageAPI 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 -
How to prevent a modal dialog from closing when we hit ESC key? Thanks in advance, Sarvan AL
The other guys have a point - My solution was like killing a gnat with a sledgehammer. Perhaps just use the
GetAsyncKeyStateto see if the escape key is down in aOnCanceloveride. -
How to prevent a modal dialog from closing when we hit ESC key? Thanks in advance, Sarvan AL
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. -
The
IsDialogMessageAPI 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: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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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.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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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
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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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.
I would have only set a thread local hook - But regardless your solution is still the way to go. Steve
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How to prevent a modal dialog from closing when we hit ESC key? Thanks in advance, Sarvan AL
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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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.Have you ever made a pie before?
-Prakash
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I would have only set a thread local hook - But regardless your solution is still the way to go. Steve
no hooks are needed to do this.
-Prakash
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The other guys have a point - My solution was like killing a gnat with a sledgehammer. Perhaps just use the
GetAsyncKeyStateto see if the escape key is down in aOnCanceloveride.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.
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no hooks are needed to do this.
-Prakash
I think we've established that -
PreTranslateMessagewas the best solution - Assuming we're using MFC. Steve -
I think we've established that -
PreTranslateMessagewas the best solution - Assuming we're using MFC. StevePreTranslateMessage is good but did you consider http://www.codeproject.com/script/comments/forums.asp?msg=1338886&forumid=1647#xx1338886xx[^]
-Prakash
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PreTranslateMessage is good but did you consider http://www.codeproject.com/script/comments/forums.asp?msg=1338886&forumid=1647#xx1338886xx[^]
-Prakash
much better, and very simple !!! thanks to mickael...
TOXCCT >>> GEII power
[toxcct][VisualCalc 2.20][VCalc 3.0 soon...] -
much better, and very simple !!! thanks to mickael...
TOXCCT >>> GEII power
[toxcct][VisualCalc 2.20][VCalc 3.0 soon...]toxcct wrote:
thanks to mickael...
no doubt. :)
-Prakash
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PreTranslateMessage is good but did you consider http://www.codeproject.com/script/comments/forums.asp?msg=1338886&forumid=1647#xx1338886xx[^]
-Prakash
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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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
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
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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
When I test just
OnCanceland stopped it callingCDialog::OnCancelthe dialog can't be closed by any means other the pressing "OK". This includes the "x", the system menu and escape. Steve -
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
I knew this other solution well before I had posted the PreTranslateMessage handling solution. But it will just change the functionality of OnCancel() too. If i write my code in OnCancel(), not to close, then on clicking the cancel button too, the dialog won't close. Don't tell me you did not know this please. I might want to do something else on OnOk() too. Handling the pretranslatemessage is not a big job. And its powerful than any other way when you work with MFC. I cannot think of any other easier and powerful way to do this. If you know something else which is REALLY APPROPRIATE and RELEVANT, please let us know too. Thanks in advance. 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.