VC-进程间通信（InterProcess Communication，IPC）

// MailslotServer.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include <Windows.h>
#include <atlstr.h>
#include <iostream>
#define BUF_SIZE 512
int _tmain(int argc, _TCHAR* argv[])
{
    const TCHAR* name = _T("\\\\.\\mailslot\\slotTest");
    HANDLE hSlot = CreateMailslot(name, 0, MAILSLOT_WAIT_FOREVER, NULL);
    if (INVALID_HANDLE_VALUE == hSlot)
    {
        printf("创建邮槽失败。错误代码：%d\n", GetLastError());
        return -1;
    }
    TCHAR buffer[BUF_SIZE] = { 0 };
    DWORD nReadBytes;
    if (ReadFile(hSlot, buffer, BUF_SIZE-1, &nReadBytes, NULL))
    {
        std::wcout.imbue(std::locale("chs"));
        std::wcout << (wchar_t*)buffer << std::endl;
    }
    return 0;
}

//////////////////////////////////////////////////
// MailslotClient.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include <Windows.h>

int _tmain(int argc, _TCHAR* argv[])
{
    const TCHAR* name = _T("\\\\.\\mailslot\\slotTest");
    HANDLE hSlot = CreateFile(name, GENERIC_WRITE, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
    if (INVALID_HANDLE_VALUE == hSlot)
    {
        printf("创建客户端邮槽失败。错误代码=%d\n", GetLastError());
        return -1;
    }
    TCHAR content[] = _T("我是客户端邮槽，向服务器发送测试数据。");
    DWORD nBytesWritten;
    if (!WriteFile(hSlot, content, sizeof(content), &nBytesWritten, NULL))
    {
        printf("向邮槽写入数据失败，错误代码：%d\n", GetLastError());
        return -1;
    }
    printf("向邮槽写入了%d个字节的数据。\n", nBytesWritten);
    CloseHandle(hSlot);
    return 0;
}