进程间通信方式.doc

一 利用剪贴板进行进程间通信void CClipboardDlg:OnBtnSend() / TODO: Add your control notification handler code hereif(OpenClipboard() /打开剪贴板 EmptyClipboard(); /释放剪贴板中数据的句柄并分配剪贴板所有权给当前窗口 CString str; HANDLE hClip; char *pBuf; GetDlgItemText(IDC_EDIT_SEND,str); hClip=GlobalAlloc(GMEM_MOVEABLE,str.GetLength()+1); /从堆中分配指定字节的内存 pBuf=(char*)GlobalLock(hClip); /对全局内存对象加锁，并将句柄转换为指针 strcpy(pBuf,str); GlobalUnlock(hClip); /解锁 SetClipboardData(CF_TEXT,hClip); /以指定的格式在剪贴板上放置数据 CloseClipboard(); /关闭剪贴板void CClipboardDlg:OnBtnRecv() / TODO: Add your control notification handler code hereif(OpenClipboard() if(IsClipboardFormatAvailable(CF_TEXT) /检测剪贴板是否包含指定格式的数据 HANDLE hClip; hClip=GetClipboardData(CF_TEXT); /从剪贴板中获取指定格式的数据 char *pBuf; pBuf=(char*)GlobalLock(hClip); /将句柄转换为地址 GlobalUnlock(hClip); SetDlgItemText(IDC_EDIT_RECV,pBuf); CloseClipboard(); 二 利用匿名管道进行进程间通信(匿名管道只能在父子进程间通信)父进程void CParentView:OnPipeCreate() / TODO: Add your command handler code hereSECURITY_ATTRIBUTES sa;sa.bInheritHandle=TRUE;sa.lpSecurityDescriptor=NULL;sa.nLength=sizeof(SECURITY_ATTRIBUTES);if(!CreatePipe(&hRead,&hWrite,&sa,0) /创建一个匿名管道并返回管道的读写句柄 MessageBox(创建匿名管道失败！); return;STARTUPINFO sui;ZeroMemory(&sui,sizeof(STARTUPINFO);sui.cb=sizeof(STARTUPINFO);sui.dwFlags=STARTF_USESTDHANDLES;sui.hStdInput=hRead;sui.hStdOutput=hWrite;sui.hStdError=GetStdHandle(STD_ERROR_HANDLE);PROCESS_INFORMATION pi;if(!CreateProcess(.ChildDebugChild.exe,NULL,NULL,NULL, TRUE,0,NULL,NULL,&sui,&pi)CloseHandle(hRead); CloseHandle(hWrite); hRead=NULL; hWrite=NULL; MessageBox(创建子进程失败！); return;else CloseHandle(pi.hProcess); CloseHandle(pi.hThread);void CParentView:OnPipeRead() / TODO: Add your command handler code herechar buf100;DWORD dwRead;if(!ReadFile(hRead,buf,100,&dwRead,NULL) MessageBox(读取数据失败！); return;MessageBox(buf);void CParentView:OnPipeWrite() / TODO: Add your command handler code herechar buf=武汉科技大学黄家湖校区;DWORD dwWrite;if(!WriteFile(hWrite,buf,strlen(buf)+1,&dwWrite,NULL) MessageBox(写入数据失败！); return;子进程void CChildView:OnInitialUpdate() CView:OnInitialUpdate();/ TODO: Add your specialized code here and/or call the base classhRead=GetStdHandle(STD_INPUT_HANDLE);hWrite=GetStdHandle(STD_OUTPUT_HANDLE);void CChildView:OnPipeRead() / TODO: Add your command handler code herechar buf100;DWORD dwRead;if(!ReadFile(hRead,buf,100,&dwRead,NULL) MessageBox(读取数据失败！); return;MessageBox(buf);void CChildView:OnPipeWrite() / TODO: Add your command handler code herechar buf=匿名管道测试程序;DWORD dwWrite;if(!WriteFile(hWrite,buf,strlen(buf)+1,&dwWrite,NULL) MessageBox(写入数据失败！); return;三 利用命名管道进行进程间通信服务端进程void CNamedPipeSrvView:OnPipeCreate() / TODO: Add your command handler code herehPipe=CreateNamedPipe(.pipeMyPipe, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED, 0,1,1024,1024,0,NULL); /创建命名管道的实例并返回句柄if(INVALID_HANDLE_VALUE=hPipe) MessageBox(创建命名管道失败！); hPipe=NULL; return;HANDLE hEvent;hEvent=CreateEvent(NULL,TRUE,FALSE,NULL);if(!hEvent) MessageBox(创建事件对象失败！); CloseHandle(hPipe); hPipe=NULL; return;OVERLAPPED ovlap;ZeroMemory(&ovlap,sizeof(OVERLAPPED);ovlap.hEvent=hEvent;if(!ConnectNamedPipe(hPipe,&ovlap) /命名管道服务端进程等待客户端连接请求的到来(客户端进程连接到命名管道的实例) if(ERROR_IO_PENDING!=GetLastError() MessageBox(等待客户端连接失败！); CloseHandle(hPipe); CloseHandle(hEvent); hPipe=NULL; return; if(WAIT_FAILED=WaitForSingleObject(hEvent,INFINITE) /等待事件对象变为有信号状态 MessageBox(等待对象失败！); CloseHandle(hPipe); CloseHandle(hEvent); hPipe=NULL; return;CloseHandle(hEvent);void CNamedPipeSrvView:OnPipeRead() / TODO: Add your command handler code herechar buf100;DWORD dwRead;if(!ReadFile(hPipe,buf,100,&dwRead,NULL) MessageBox(读取数据失败！); return;MessageBox(buf);void CNamedPipeSrvView:OnPipeWrite() / TODO: Add your command handler code herechar buf=武汉科技大学黄家湖校区;DWORD dwWrite;if(!WriteFile(hPipe,buf,strlen(buf)+1,&dwWrite,NULL) MessageBox(写入数据失败！); return;客户端进程void CNamedPipeCltView:OnPipeConnect() / TODO: Add your command handler code hereif(!WaitNamedPipe(.pipeMyPipe,NMPWAIT_WAIT_FOREVER) /等待命名管道的实例可用 MessageBox(当前没有可利用的命名管道实例！); return;hPipe=CreateFile(.pipeMyPipe,GENERIC_READ | GENERIC_WRITE, 0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL); /打开命名管道if(INVALID_HANDLE_VALUE=hPipe) MessageBox(打开命名管道失败！); hPipe=NULL; return;void CNamedPipeCltView:OnPipeRead() / TODO: Add your command handler code herechar buf100;DWORD dwRead;if(!ReadFile(hPipe,buf,100,&dwRead,NULL) MessageBox(读取数据失败！); return;MessageBox(buf);void CNamedPipeCltView:OnPipeWrite() / TODO: Add your command handler code herechar buf=命名管道测试程序;DWORD dwWrite;if(!WriteFile(hPipe,buf,strlen(buf)+1,&dwWrite,NULL) MessageBox(写入数据失败！); return;四 利用邮槽进行进程间通信服务端进程void CMailslotSrvView:OnMailslotRecv() / TODO: Add your command handler code hereHANDLE hMailslot;hMailslot=CreateMailslot(.mailslotMyMailslot,0, MAILSLOT_WAIT_FOREVER,NULL); /创建邮槽if(INVALID_HANDLE_VALUE=hMailslot) MessageBox(创建邮槽失败！); return;char buf100;DWORD dwRead;if(!ReadFile(hMailslot,buf,100,&dwRead,NULL) /邮槽的服务端只能接收数据 MessageBox(读取数据失败！); CloseHandle(hMailslot); return;MessageBox(buf);CloseHandle(hMailslot);客户端进程void CMailslotCltView:OnMailslotSend() / TODO: Add your command handler code hereHANDLE hMailslot;hMailslot=CreateFile(.mailslotMyMailslot,GENERIC_WRITE, FILE_SHARE_READ,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL); /打开邮槽if(INVALID_HANDLE_VAL