匿名管道，重定向PING中的数据

#include <windows.h>
#include <stdlib.h>

void go(HWND hwnd)
{
	char * ping = "IPCONFIG /all"; // 命令
	char pbuf[1024]; // 缓存
	DWORD len;
	STARTUPINFO si;
	PROCESS_INFORMATION pi;
	HANDLE hRead1, hWrite1;  // 管道读写句柄
	BOOL b;
	SECURITY_ATTRIBUTES saAttr;

	saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
	saAttr.bInheritHandle = TRUE; // 管道句柄是可被继承的
	saAttr.lpSecurityDescriptor = NULL;

	// 创建匿名管道，管道句柄是可被继承的
	b = CreatePipe(&hRead1, &hWrite1, &saAttr, 1024);
	if (!b)
	{
		MessageBox(hwnd, "管道创建失败。","Information",0);
		return ;
	}

	memset(&si, 0, sizeof(si));
	si.cb = sizeof(si);
	si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
	si.wShowWindow = SW_HIDE;
	si.hStdOutput = hWrite1; // 设置需要传递到子进程的管道写句柄

	// 创建子进程，运行ping命令，子进程是可继承的
	if (!CreateProcess(NULL, ping, NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi))
	{
		itoa(GetLastError(), pbuf, 10);
		MessageBox(hwnd, pbuf,"Information",0);
		CloseHandle(hRead1);
		CloseHandle(hWrite1);
		return ;
	}

	// 写端句柄已被继承，本地则可关闭，不然读管道时将被阻塞
	CloseHandle(hWrite1);

	// 读管道内容，并用消息框显示
	len = 1000;
	DWORD l;

	while (ReadFile(hRead1, pbuf, len, &l, NULL))
	{
		if (l == 0) break;
		pbuf[l] = '\0';
		MessageBox(hwnd, pbuf, "Information",0);
		len = 1000;
	}

	MessageBox(hwnd, "ReadFile Exit","Information",0);
	CloseHandle(hRead1);

	return ;

}

int main(int argc, char* argv[])
{
	go( NULL );
	return 0;
}

 

文章转载自：http://blog.csdn.net/lpc_china/article/details/5847260