CBuilder中使用管道技术实例

废话不多说，大家来看代码

bool __fastcall TForm1::RunCmd(AnsiString cmd,TStringList *stringlist){    TMemoryStream *memstream=new TMemoryStream();    AnsiString rn="//r//n";    PROCESS_INFORMATION proc;    STARTUPINFO start;    SECURITY_ATTRIBUTES sa;    long ret;    unsigned long lngBytesread;    HANDLE hReadPipe,hWritePipe;    char *strBuff=(char *)malloc(256);    if(strBuff==NULL)    {        return false;    }    sa.nLength = sizeof(SECURITY_ATTRIBUTES);    sa.bInheritHandle=true;    sa.lpSecurityDescriptor=NULL;    ret=CreatePipe(&hReadPipe,&hWritePipe,&sa,0);    if(ret==0)    {        //创建管道失败        return false;    }    memset(&start,0x00,sizeof(STARTUPINFO));    start.cb=sizeof(STARTUPINFO);    start.dwFlags=STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;    start.hStdOutput=hWritePipe;    start.hStdError=hWritePipe;    bool retc=CreateProcess(NULL,cmd.c_str(),NULL,NULL,true, 0, 0, NULL, &start, &proc);    if(!retc)    {        return false;    }    CloseHandle(hWritePipe);    unsigned long len;    memstream->Position=0;    while(true)    {        memset(strBuff,0x00,256);        GetFileSize(hReadPipe,&len);        ret = ReadFile(hReadPipe, strBuff, 256, &lngBytesread,NULL);        if(ret==0)        {            break;        }        else        {            memstream->Write(strBuff,lngBytesread);        }    }    CloseHandle(proc.hProcess);    CloseHandle(proc.hThread);    CloseHandle(hReadPipe);    memstream->Position=0;    free(strBuff);    stringlist->LoadFromStream(memstream);    memstream->Clear();    delete memstream;    return true;}

以上为一个使用管道获取命令行模式的程序的运行结果的函数。

使用代码

TStringList *StrList=new TStringList;AnsiString strcmd;

RunCmd(strcmd,StrList);

结果保留再StrList中。