ATLASSERT(::IsWindow(m_hWnd));
	BOOL SetActivePage(HPROPSHEETPAGE hPage)	{		ATLASSERT(::IsWindow(m_hWnd));		ATLASSERT(hPage != NULL);		return (BOOL)::SendMessage(m_hWnd, PSM_SETCURSEL, 0, (LPARAM)hPage);	}