VC++之线程和进程之用邮槽实现进程间通信.doc

一、创建应用工程 1、创建单文档应用程序工程2、添加新单文档应用程序工程二、编辑菜单项 1、编辑Thread工程之菜单项 2、编辑Child工程之菜单项三、添加消息响应函数 a、为CThreadView类添加菜单消息响应函数 b、为CChildView类添加菜单消息响应函数四、添加代码 1、为CThreadView类添加消息响应函数代码void CThreadView:OnReceive() / TODO: Add your command handler code hereHANDLE mailslot;mailslot=CreateMailslot(.mailslotmymailslot,0,MAILSLOT_WAIT_FOREVER,NULL); /创建邮槽if(INVALID_HANDLE_VALUE=mailslot)MessageBox(Create fail);CloseHandle(mailslot);return;char buf100;DWORD dwread;ReadFile(mailslot,buf,100,&dwread,NULL); /读文件MessageBox(buf);CloseHandle(mailslot); 2、为CChildView类添加消息响应函数代码void CChildView:OnSend() / TODO: Add your command handler code hereHANDLE mailslot;mailslot=CreateFile(.mailslotmymailslot,GENERIC_WRITE,FILE_SHARE_READ,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);if(INVALID_HANDLE_VALUE=mailslot)MessageBox(Open fail);CloseHandle(mailslot);return;char buf=你好,长江!;DWORD dwwrite;WriteFile(mailslot,buf,strlen(buf)+1,&dwwrite,NULL);CloseHandle(mailslot);五、编译六、运行七、函数说明 1、CreateMailslot()函数声明HANDLE CreateMailslot(LPCTSTR lpName,DWORD nMaxMessageSize,DWORD lReadTimeOut,LPSECURITY_ATTRIBUTES lpSecurityAttributes) 功能：创建一个邮槽。函数调用成功，返回邮槽句柄；否则，返回INVALID_HANDLE_VALUE。 2、CreateFile()函数声明HANDLE CreateFile(LPCTSTR lpFileName,DWORD dwDwsiredAccess,DWORD dwShareMode,LPSECURITY_ATTRIBUTES lpSecurityAttributes,DWORD dwCreationDispostion,DWORD dwFlagsAndAttributes,HANDLE hTemplateFile) 功能：创建或打开一个文件、通信资源、磁盘驱动器等。 3、ReadFile()函数声明BOOL ReadFile(HANDLE hFile,LPVOID lpBuffer,DWORD nNumberOfBytesRead,LPDWORD lpNumberOfBytesRead,LPOVERLAPPED lpOverlapped) 功能：从一个文件中文件指针位置开始读取数据。成功，返回非零值；失败，返回零。 4、WriteFile()函数声明BOOL WriteFile(HANDLE hFile,LPVOID lpBuffer,DWORD nNumberOfBytesToWrite,LPDWORD l