virtual	LRESULT OnSysCommand(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)	{		if( wParam == SC_CLOSE ) {			::PostQuitMessage(0L);			bHandled = TRUE;			return 0;		}		BOOL bZoomed = ::IsZoomed(*this);		LRESULT lRes = CWindowWnd::HandleMessage(uMsg, wParam, lParam);		if( ::IsZoomed(*this) != bZoomed ) {			if( !bZoomed ) {				CControlUI* pControl = static_cast<CControlUI*>(m_PaintManager.FindControl(_T("maxbtn")));				if( pControl ) pControl->SetVisible(false);				pControl = static_cast<CControlUI*>(m_PaintManager.FindControl(_T("restorebtn")));				if( pControl ) pControl->SetVisible(true);			}			else {				CControlUI* pControl = static_cast<CControlUI*>(m_PaintManager.FindControl(_T("maxbtn")));				if( pControl ) pControl->SetVisible(true);				pControl = static_cast<CControlUI*>(m_PaintManager.FindControl(_T("restorebtn")));				if( pControl ) pControl->SetVisible(false);			}		}		return lRes;	}