엑셀을 읽고 종료하는데 종료후에도 프로세스가 살아 있습니다.
10.3.1 사용하고 있습니다.
종료시에 다른 코드가 들어가야 하나요?

    WideString filename =  "D:\\DebugBook1.xlsx";



        // Excel's Application Object
         Variant xlApp = Variant::CreateObject("Excel.Application");
         xlApp.OlePropertySet("DisplayAlerts", false);
         xlApp.OlePropertySet("Visible", false);
         Variant xlBooks = xlApp.OlePropertyGet("Workbooks");
         xlBooks.OleProcedure("Open", filename);
         Variant xlBook = xlBooks.OlePropertyGet("Item", 1);
         Variant xlSheets = xlBook.OlePropertyGet("Worksheets");


        xlBook.OleProcedure("Save");
         xlBooks.OleProcedure("Close");
         xlApp.OleProcedure("Quit");

//        xlSheet  = Unassigned;
         xlSheets = Unassigned;
         xlBook   = Unassigned;
         xlBooks  = Unassigned;
         xlApp    = Unassigned;