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Detect Return keypress in a edit text widget

How can I get noticed when user press the "Enter" key in a edit text widget after user enter their value.
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nicolet
Asked:
nicolet
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1 Solution
 
nicoletAuthor Commented:
Edited text of question
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umaramaCommented:
Widget means what ?
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Answers2000Commented:
The easiest way to get thje same effect is to add an OK button to the dialog.

The short-cut key for OK is return

Add a handler OnOK in the dialog.

Please note you can hide the OK button if you don't really want one visible using
GetDlgItem(IDOK)->ShowWindow(SW_HIDE) ;

Also base class of OnOK (so if you call this) closes the dialog.

If you really want the edit control to handle the return key itself, (1) derive class from CEdit using class wizard (say CMyEdit), (2) add a member variable of this type to the dialog, and (3) in this class process WM_KEYDOWN, WM_KEYUP, etc.

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nicoletAuthor Commented:
Thank You!

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nicoletAuthor Commented:
This Edit box is in a child window dialog, It does not response to "OnOK". Would you please be more detailed about using derived class from CEdit and process WM_KEYDOWN, WM_KEYUP. to catch a "Return" key press.

Thank You!
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umaramaCommented:
Try this out ...

In your derived CEdit class, say CMyEdit, add an handler for PreTranslateMessage ...

BOOL CMyEdit::PreTranslateMessage(MSG* pMsg)
{
  if ((pMsg->message == WM_KEYDOWN) && 
      (pMsg->wParam == VK_RETURN))
       .... CALL YOUR FUNCTION (Enter has been detected)
       return TRUE;// Saying that you have handled the msg
  }
  return CEdit::PreTranslateMessage(pMsg);
}

You can also translate your key strokes to some other key stroke.
For Ex: If Enter needs to be treated as Tabs, you can do the following ..

BOOL CMyEdit::PreTranslateMessage(MSG* pMsg)
{
  if ((pMsg->message == WM_KEYDOWN) && 
      (pMsg->wParam == VK_RETURN))
       pMsg->wParam = VK_TAB;// Cheating !!
  }
  return CEdit::PreTranslateMessage(pMsg);
}

Hope this helps
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nicoletAuthor Commented:
Thank You!
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