Checks that the control is in-place active and has a valid control site, then informs the container the control has gained focus.
LRESULT OnSetFocus(
UINT /* nMsg */,
WPARAM /* wParam */,
LPARAM /* lParam */,
BOOL& bHandled
);
Parameters
nMsg
Reserved.wParam
Reserved.lParam
Reserved.bHandled
Flag that indicates whether the window message was successfully handled. The default is FALSE.
Return Value
Always returns 1.
Remarks
Sends a notification to the container that the control has received focus.
Requirements
Header: atlctl.h