LBN_SETFOCUS

An application sends the LBN_SETFOCUS notification message when a list box receives the keyboard focus. The parent window of the list box receives this notification message through the WM_COMMAND message.

LBN_SETFOCUS

idListBox = (int) LOWORD(wParam); // identifier of list box

hwndListBox = (HWND) lParam; // handle of list box

See Also

LBN_KILLFOCUS, WM_COMMAND