cmd命令的管道重定向

#include "windows.h"
#include "iostream"
using namespace std;

HANDLE hRead,hWrite,dWrite,dRead;


DWORD WINAPI ThreadRead(LPVOID lpParameter) //读取线程
{
	DWORD dw=-1;
	char temp[4096];

	while(dw != 0)
	{  
		memset(temp,0,4096);
		ReadFile(hRead,temp,4095,&dw,0);
		if(dw!=0)
		{
			cout<<temp;
		}
	}
	return 0;

}

void Read()
{
	HANDLE handle = CreateThread(NULL, 0, ThreadRead, NULL, 0, NULL); //创建读取线程
	if(! handle)
	{
		MessageBox(NULL,"创建线程失败","Tip",0);
		return ;
	}
	CloseHandle(handle);
}


int main(int argc, char * argv[])
{
	DWORD ErrorCode;
	DWORD dw=-1; 
	char ErrorString[500];

	SECURITY_ATTRIBUTES sa;      //创建安全信息结构体
	sa.bInheritHandle=true;
	sa.lpSecurityDescriptor=0;
	sa.nLength=sizeof(sa);

	CreatePipe(&hRead,&hWrite,&sa,4096);  //创建输出管道
	if(ErrorCode = GetLastError())
	{
		cout<<"创建输入管道失败！"<<endl;
		FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, ErrorCode, LANG_SYSTEM_DEFAULT, ErrorString, 500, NULL);
		cout<<ErrorString<<endl;
		return 1;
	}

	CreatePipe(&dRead,&dWrite,&sa,4096);  //创建输入管道
	if(ErrorCode = GetLastError())
	{
		cout<<"创建输出管道失败！"<<endl;
		FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, ErrorCode, LANG_SYSTEM_DEFAULT, ErrorString, 500, NULL);
		cout<<ErrorString<<endl;
		return 2;
	} 

	STARTUPINFO si;        //创建进程开始信息结构体
	GetStartupInfo(&si);
	si.dwFlags = STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
	si.wShowWindow = SW_HIDE;   
	si.hStdOutput = hWrite;
	si.hStdInput = dRead;

	PROCESS_INFORMATION pi;     //创建进程

	CreateProcess(NULL, "cmd.exe", NULL, NULL, true, 0, NULL, NULL, &si, &pi);  //此为命令窗口所用的创建进程语句

	if(ErrorCode = GetLastError())
	{
		cout<<"创建进程失败！"<<endl;
		FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, ErrorCode, LANG_SYSTEM_DEFAULT, ErrorString, 500, NULL);
		cout<<ErrorString<<endl;
		return 3;
	}
	
	char data[100];

	while(1)
	{
		gets(data);
		if(strcmp(data,"cls")==0)
		{
			system("cls");
			continue;
		}
		strcat(data,"\n");
		fflush(stdin);
		WriteFile(dWrite, data, strlen(data), &dw, NULL);
		Read();

		if(strcmp(data,"exit")==0)
			return 0;
	}

	return 0;
}