How to be notified when user change focus to another dialog item?

I need to update the values on an edit box whenever the user finishes editing, which means that the cursor should be at another position. So how am I to be notified about it so as to update the values.
exxAsked:
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chensuCommented:
Derive your own edit box class from CEdit and override the message handler OnKillFocus(). In the dialog box's OnInitDialog(), call SubclassDlgItem() to subclass the edit box.
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chensuCommented:
Any comments?
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piano_boxerCommented:
A better (easier) way would be to handle the EN_KILLFOCUS notification that the edit control sends to its parent. The notification is sendt via the WM_COMMAND message:

EN_KILLFOCUS
idEditCtrl = (int) LOWORD(wParam); // identifier of edit control
wNotifyCode = HIWORD(wParam);      // notification code
hwndEditCtrl = (HWND) lParam;      // handle of edit control


This way you dont have to do any subclassing.
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exxAuthor Commented:
Actually found the answer before you, but never mind.
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