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Assigning a CLICK event to an CEdit box

Posted on 1997-08-21
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Last Modified: 2013-11-20
I have a VC++ 4.x app that has several edit boxes created with the dialog editor in VC (standard CEdit box). How can I assign a CLICK event to these? CLICK is not a standard stock event, and I cannot seem to add a custom event. Example code would be great. Thanks.

Michael A Knight
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Question by:maknight
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4 Comments
 
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Tommy Hui earned 50 total points
ID: 1304529
If you want to know when an edit control is clicked on, you can derive a class from CEdit and catch the WM_LBUTTONDOWN message. This message is sent when the user clicks on the edit control.
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by:maknight
ID: 1304530
I have tried this, but if I use ClassWizard to add a Member Variable for the CEdit control of category Control and type KECEditCtrl (the CEdit-derived class), everywhere I click in the dialog (it is a Dialog-based app) runs the ON_WM_LBUTTONDN code in the derived class. This puzzles the heck outta me.
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LVL 15

Expert Comment

by:Tommy Hui
ID: 1304531
This is very puzzling. The only way that could happen is your derived class is the one stealing all of the mouse messages. Make sure there's no reference to CEdit anywhere in your dialog class. Check to make sure no one is explicitly calling your OnLButtonDown function.

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Author Comment

by:maknight
ID: 1304532
I found the culprits. A) Remove the default call from the end of the OnLButtonDn function, B) SetFocus to the edit control. Somehow in the derivation, the system loses light of the fact that it should set focus on the click also. Thanks. I have another related question I just posted if you wanna take a shot at it...

MAK
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