//網上摘抄的例子:原示例有錯誤,經修改如下。// Pipe.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <windows.h>
#include <stdlib.h>
void go(HWND hwnd)
{
char * ping = "IPCONFIG"; // 命令
char pbuf[1024]; // 緩存
DWORD len;
STARTUPINFO si;
PROCESS_INFORMATION pi;
HANDLE hRead1, hWrite1; // 管道讀寫句柄
BOOL b;
SECURITY_ATTRIBUTES saAttr;
saAttr.nLength = sizeof(SECURITY_ATTRIBUTES);
saAttr.bInheritHandle = TRUE; // 管道句柄是可被繼承的
saAttr.lpSecurityDescriptor = NULL;
// 創建匿名管道,管道句柄是可被繼承的
b = CreatePipe(&hRead1, &hWrite1, &saAttr, 1024);
if (!b)
{
MessageBox(hwnd, "管道創建失敗。","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; // 設置需要傳遞到子進程的管道寫句柄
// 創建子進程,運行ping命令,子進程是可繼承的
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 ;
}
// 寫端句柄已被繼承,本地則可關閉,不然讀管道時將被阻塞
CloseHandle(hWrite1);
// 讀管道內容,並用消息框顯示
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;
}