//并保存Clipboard Viewer Chain中下一个窗口的句柄

    m_hwndNextViewer = SetClipboardViewer();

}



void CMonitorUrlView::OnDestroy()

{

    CListView::OnDestroy();

    

    //从Clipboard Viewer Chain注销本窗口

    ChangeClipboardChain(m_hwndNextViewer);

}



//Clipboard Viewer注销

void CMonitorUrlView::OnChangeCbChain(HWND hWndRemove, HWND hWndAfter)

{

    //如果注销的Clipboard Viewer窗口是本窗口的下一个窗口，

    //则修改本窗口保存的下一个窗口句柄,

    CView::OnChangeCbChain(hWndRemove,hWndAfter);



    if(hWndRemove == m_hwndNextViewer)

        m_hwndNextViewer = hWndAfter;

}



//剪贴板内容变化,判断剪贴板中的内容是否为URL地址，如是则显示

void CMonitorUrlView::OnDrawClipboard()

{

    CView::OnDrawClipboard();

        

    unsigned int anFormats = {CF_TEXT};

    unsigned int nFormat =

GetPriorityClipboardFormat(anFormats,sizeof(anFormats));  

    if(nFormat == CF_TEXT)

    {

        HGLOBAL hMem;

        OpenClipboard();

        

        if(hMem = ::GetClipboardData(CF_TEXT))

        {

            LPTSTR lpszText = (LPTSTR) GlobalLock(hMem);

            CString strURL = lpszText;

            strURL = strURL.SpanExcluding("\r\n");

            

            if(strURL.Left(7).CompareNoCase("http://") == 0 ||

               strURL.Left(6).CompareNoCase("ftp://")  == 0 ||

               strURL.Left(7).CompareNoCase("file://") == 0)

            {                

                m_pListCtrl->InsertItem(0,lpszText);

            }

            GlobalUnlock(hMem);

        }

        CloseClipboard();

   &