MFC API实现Excel读写 屏蔽调用SaveAs函数时弹出“文件已存在”问题

  CApplication ExcelApp;

  ExcelApp.put_DisplayAlerts(FALSE);

    book.SaveAs(_variant_t(strSaveAsName), _variant_t((long)56), vtMissing, vtMissing, vtMissing,

   vtMissing, 0,vtMissing , vtMissing, vtMissing,

   vtMissing,vtMissing);

  ExcelApp.put_DisplayAlerts(TRUE);

 解决方法：在调用SaveAs函数的前后加上如上两行代码