C++ Builder XE OpenDialog1打开多文件并显示xls与xlsx二种格式文件

void __fastcall TForm1::BitBtn8Click(TObject *Sender)

{

OpenDialog1->Options<<ofAllowMultiSelect<<ofFileMustExist;//允许选择多个文件

OpenDialog1->Title="请选择导入的文件!";
OpenDialog1->Filter="Excel Files (*.xls;*.xlsx)|*.xls;*.xlsx|All Files (*.*)|*.*";

//设置文件过滤

OpenDialog1->DefaultExt="xls";

//设置缺省扩展名

//BitBtn1图片要在上方，得设置layout为blglyphTop

//OpenDialog1->ofAllowMultiSelect=true！

int i,num,Lnum;

if(OpenDialog1->Execute())

{

//++++++++++++++++++++++++++++++++++++++++++++

//计算时间

clock_t start,end,dtStart;

start=clock();

RzProgressBar1->Percent=0;

//++++++++++++++++++++++++++++++++++++++++++++

num=OpenDialog1->Files->Count;

Lnum=ListView1->Items->Count;

//为空退出

if (num==0)

return;

ListView1->Items->BeginUpdate();

TListItem *pItem=0;

for(i=0;i<num;i++)

{

pItem=ListView1->Items->Add();

pItem->Caption=Lnum+i+1;

pItem->SubItems->Add(ExtractFileName(OpenDialog1->Files->Strings $i$ ));

pItem->SubItems->Add("***"); //注数

pItem->SubItems->Add(OpenDialog1->Files->Strings $i$ ); //注数

pItem->SubItems->Add("*");

//++++++++++++++++++++++++++++++++++++++++++++

RzProgressBar1->Percent=100*i/num;

//++++++++++++++++++++++++++++++++++++++++++++

//pItem->SubItems->Strings $1$ ="不详";

// ListView1->Items->Item $i$ ->ImageIndex=0;

}

ListView1->Items->EndUpdate();

Lnum=ListView1->Items->Count;

//RzGroupBox1->ActivePageIndex=0;

//Label4->Caption="预导入大底:"+String(Lnum)+" 个";

//++++++++++++++++++++++++++++++++++++++++++++

RzProgressBar1->Percent=100;

//++++++++++++++++++++++++++++++++++++++++++++

// +++++++++++++++++++++++++++++++++++++++++++++++

//操作完成计时

end=clock();

dtStart=end-start;

float dSec=float(dtStart)/1000;

RzStatusPane1->Caption ="预导入大底:"+String(Lnum)+" 个";

ListView1->Columns->Items $0$ ->Caption="id $"+AnsiString(Lnum)+"$ ";

RzStatusPane2->Caption =

"耗时:"+FloatToStrF(dSec,ffFixed,4,3)+" 秒 ";

// to

}