VC Excel operation in OLE

在VC中操作Excel文件需要引入Excel服务器，在VC中添加Class, 在from type library中引入Excel.exe，如下，

具体代码示例如下，

exlapp.put_Visible(FALSE);  //set the excel sheet invisible to the user!  otherwise the excel sheet will be opened and visible
exlapp.put_UserControl(TRUE);


//获取主程序所在路径,存在sPath中
     GetModuleFileName(NULL,sPath.GetBufferSetLength(MAX_PATH+1),MAX_PATH);
     sPath.ReleaseBuffer();
     int nPos;
     nPos=sPath.ReverseFind ('\\');
     sPath=sPath.Left(nPos);
     sFile = sPath + CString("\\pw.xls");    // 将被读取的Excel文件名


try{
   wbks = exlapp.get_Workbooks();
   wbk = wbks.Open(sFile, VOptional, VOptional, VOptional, _variant_t("username"), _variant_t("password"),
VOptional,VOptional,VOptional,VOptional,VOptional,VOptional,VOptional,VOptional,VOptional);
}//the excel file was protected by password
catch (CException *e){
TCHAR msg[1024] = {0};
e->GetErrorMessage(msg, 1024);
e->ReportError();
e->Delete();
         AfxMessageBox(msg);
if (log)
log->Error(_T("Error occurred in opening pw.xls file. Cause of %s"), msg);
}




//wbks.Open(


whts = wbk.get_Worksheets();
wht = whts.get_Item(COleVariant((short)1));
//read out the Excel sheet content

CRange range, currentRange;

VARIANT varItemName;
具体函数使用
range.get_Item( COleVariant( (long)(i + 1)), COleVariant((long)j)).pdispVal, TRUE)
读取第i+1行，j栏格中数字。