The EN_KILLFOCUS notification message is sent when an edit control loses the keyboard focus. The parent window of the edit control receives this notification message through 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
Remarks
In previous versions of Windows, the notification code was in HIWORD(lParam).
See Also