用CreateProcess执行一个dos程式序,若使用管道操作会出现无法输出信息在dos窗口的问题

[xhwu3721]

代码如下:
执行时只会出现一个dos窗口,但dir的内容却不出显示出来,
我的目的是要进行管道操作,但dos窗口执行的内容也要show出来.
经调试发现只是这个参数的问题STARTF_USESTDHANDLES,如将其去掉即可以显示出来,该如何解决呢?
STARTUPINFO si;
::ZeroMemory(&si,sizeof(si));
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
si.wShowWindow = SW_SHOW;
si.hStdInput=hReadPipe2;
si.hStdOutput=si.hStdError=hWritePipe1;
si.cb=sizeof(si);
PROCESS_INFORMATION processInfo;
char cmdLine[] = "a.bat";
//char cmdLine[] = "cmd.exe /k dir c:";
ZeroMemory( &processInfo , sizeof(PROCESS_INFORMATION) );
ret=CreateProcess(NULL, cmdLine, NULL,NULL,1,0,NULL,NULL,&si,&processInfo);

if( !ret ) return;

[gangjh]

可不可以用popen呢

[xhwu3721]

帮一下哦.等着用呢.

[xyxfly]

呵呵，原贴

si.hStdInput=hReadPipe2;
si.hStdOutput=si.hStdError=hWritePipe1;

hReadPipe2,hReadPipe1 是什么值？

[xhwu3721]

代码如下:
与它们有关吗?好象没有关系啊.
int ret;
SECURITY_ATTRIBUTES sa1,sa2;
sa1.nLength = sizeof(SECURITY_ATTRIBUTES);
sa1.lpSecurityDescriptor = NULL;
sa1.bInheritHandle = TRUE;
sa2.nLength = sizeof(SECURITY_ATTRIBUTES);
sa2.lpSecurityDescriptor = NULL;
sa2.bInheritHandle = TRUE;
HANDLE hReadPipe2,hWritePipe2,hReadPipe1,hWritePipe1;

CreatePipe( &hReadPipe1, &hWritePipe1, &sa1, 0 );
CreatePipe( &hReadPipe2, &hWritePipe2, &sa2, 0 );

STARTUPINFO si;
::ZeroMemory(&si,sizeof(si));
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
si.wShowWindow = SW_SHOW;
si.hStdInput=hReadPipe2;
si.hStdOutput=si.hStdError=hWritePipe1;
si.cb=sizeof(si);
PROCESS_INFORMATION processInfo;
char cmdLine[] = " /k dir c:\r\n";
//char cmdLine[] = "cmd.exe /k perl BCM_BTDL_v1.4.pl";
ZeroMemory( &processInfo , sizeof(PROCESS_INFORMATION) );
ret=CreateProcess("c:\\windows\\system32\\cmd.exe", cmdLine, NULL,NULL,1,0,NULL,NULL,&si,&processInfo);
// CreateProcess(NULL, cmdLine,NULL, NULL, FALSE, 0, NULL, NULL, &si, &processInfo);
if( !ret ) return;

Sleep(5000);
int iTimeOut=0;
while(1)
{
if(!FindProcess("perl.exe"))
break;
Sleep(1000);
iTimeOut++;
if(iTimeOut>30)
{
KillProcess("perl.exe");
break;
}
}

// AfxMessageBox("finish");


char buff[1024*2]={'\0'};
strcpy(buff,"dir c:");
DWORD bytesRead=1024*2;

Sleep(1000);
ret = WriteFile( hWritePipe2, buff, bytesRead, &bytesRead, 0 );
if( !ret ) return;


ret = ReadFile( hReadPipe1, buff, 1024, &bytesRead, 0 );
if( !ret ) return;

AfxMessageBox(buff);


TerminateProcess( processInfo.hProcess, 0 );

CloseHandle( hReadPipe1 );
CloseHandle( hReadPipe2 );
CloseHandle( hWritePipe1 );
CloseHandle( hWritePipe2 );

[shinley80]

现在我也遇到了同样的问题，请问楼主这个问题您解决了么？能否告诉我怎么解决？谢谢！