ID--HANDLE--HWND三者之间的互相转换

ID--HANDLE--HWND三者之间的互相转换
id->句柄                    hWnd = ::GetDlgItem(hParentWnd,id);
id->指针                   CWnd::GetDlgItem();
句柄->id                   id = GetWindowLong(hWnd,GWL_ID);
句柄->指针             CWnd *pWnd=CWnd::FromHandle(hWnd);
指针->ID                 id = GetWindowLong(pWnd->GetSafeHwnd,GWL_ID);
指针->句柄             hWnd=cWnd.GetSafeHandle() or mywnd->m_hWnd;