CRectrcMy;
::GetWindowRect(m_hWnd,rcMy);//得到当前的窗口位置
//设为总在最前
SetWindowPos(&wndTopMost,rcMy.left, rcMy.top,rcMy.Size().cx,rcMy.Size().cy,SWP_SHOWWINDOW);
//取消总在最前
SetWindowPos(&wndTopMost,rcMy.left, rcMy.top,rcMy.Size().cx,rcMy.Size().cy,SWP_SHOWWINDOW);