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5.2.2 模拟按键 函数keybd_event()综合一个按键事件，系统用这个事件产生WM_KEYUP或WM_KEYDOWN消息.在WindowsNT下,该函数被SendInput()所代替.函数keybd_event()的原型如下: 内容来自www.paper51.com VOID keybd_event(BYTE bVk,BYTEbScan,DWORD dwFlags,DWORD dwExtraInfo); 内容来自www.paper51.com 函数keybd_event()有4个参数,其中参数bVk指所按键的虚拟键值.取值范围在1至254之间。常见的特殊键值有：Tab(9),Shift(16),Ctrl(17),Alt(18),CapsLock(20),Esc(27),Win(91,92),NumLock(144)及ScrollLock(145)等. 内容来自www.paper51.com 参数bScan指所按键的扫描码。 paper51.com 参数dwFlags指函数操作标志位集合，应用程序可以检测这个值。它可以取以下值。 http://www.paper51.com
KEYEVENTF_EXTENDEDKEY:如果指定该值，则键盘扫描码加一个前缀（224）。 paper51.com KEYEVENTF_KEYUP：如果指定该值，则键释放，否则，键一直被按下。 copyright paper51.com
参数dwExtralnfo指向一个附加的与键值有关联的32位值。 copyright paper51.com 5.3具体代码 http://www.paper51.com 由于篇幅有限，这里只列出了部分重要代码。 paper51.com 服务器端套接字的创建，绑定，连接： copyright paper51.com char chName[256]; copyright paper51.com sockaddr_in addr; 内容来自论文无忧网 www.paper51.com hostent* pEnt = NULL; http://www.paper51.com int addrlen = 0, nRet = 0; copyright paper51.com nRet = ::gethostname(chName, 256); copyright paper51.com if(nRet== 0) http://www.paper51.com { 内容来自www.paper51.com m_sckServer= socket(AF_INET, SOCK_STREAM, 0); http://www.paper51.com if(m_sckServer!= INVALID_SOCKET) http://www.paper51.com { paper51.com pEnt= ::gethostbyname(chName); 内容来自论文无忧网 www.paper51.com if(pEnt) 内容来自www.paper51.com
{ http://www.paper51.com
addr.sin_family= AF_INET; 内容来自论文无忧网 www.paper51.com
addr.sin_port= htons(m_uPort); paper51.com addr.sin_addr.s_addr= INADDR_ANY; 内容来自www.paper51.com
nRet= ::bind(m_sckServer, (sockaddr*)&addr, sizeof(addr)); http://www.paper51.com paper51.com if(nRet!= SOCKET_ERROR) 内容来自论文无忧网 www.paper51.com { copyright paper51.com
nRet= ::listen(m_sckServer, SOMAXCONN); http://www.paper51.com if(nRet!= SOCKET_ERROR) 内容来自www.paper51.com { paper51.com addrlen= sizeof(addr); copyright paper51.com
TRACE(_T("开始了服务，等待客户......\n")); 内容来自www.paper51.com m_sckClient[0] = ::accept(m_sckServer, (sockaddr*)&addr,&addrlen); http://www.paper51.com if(m_sckClient[0] != INVALID_SOCKET) 内容来自www.paper51.com { 内容来自论文无忧网 www.paper51.com //为了同步 内容来自论文无忧网 www.paper51.com ::PL_SendSocketData(m_sckClient[0], NULL, 0, PL_TEMP, MSG_OOB); 内容来自论文无忧网 www.paper51.com
} 内容来自www.paper51.com
m_sckClient[1] = ::accept(m_sckServer, (sockaddr*)&addr,&addrlen); paper51.com if(m_sckClient[0] != INVALID_SOCKET && m_sckClient[1] != INVALID_SOCKET) 内容来自www.paper51.com TRACE(_T("客户连接上了.......\n")); 内容来自论文无忧网 www.paper51.com 服务器端关闭套接字： paper51.com BOOL CSocketThread::ExitServer() 内容来自论文无忧网 www.paper51.com
{ 内容来自论文无忧网 www.paper51.com TRACE(_T("退出服务，重新等待连接......\n")); 内容来自www.paper51.com if(g_pSendDIBThread!= NULL) copyright paper51.com
{ http://www.paper51.com ::TerminateThread(g_pSendDIBThread->m_hThread,0); 内容来自www.paper51.com ::WaitForSingleObject(g_pSendDIBThread->m_hThread,INFINITE); paper51.com g_pSendDIBThread= NULL; copyright paper51.com } http://www.paper51.com if(g_pWaitCommandThread!= NULL) paper51.com { 内容来自论文无忧网 www.paper51.com
::TerminateThread(g_pWaitCommandThread->m_hThread,0); http://www.paper51.com ::WaitForSingleObject(g_pWaitCommandThread->m_hThread,INFINITE); 内容来自www.paper51.com g_pWaitCommandThread= NULL; copyright paper51.com } paper51.com if(m_sckClient[0]!= INVALID_SOCKET) copyright paper51.com
{ 内容来自www.paper51.com ::closesocket(m_sckClient[0]); paper51.com
} 内容来自www.paper51.com if(m_sckClient[1]!= INVALID_SOCKET) http://www.paper51.com { paper51.com
::closesocket(m_sckClient[1]); http://www.paper51.com } http://www.paper51.com
if(m_sckServer!= INVALID_SOCKET) 内容来自论文无忧网 www.paper51.com { 内容来自论文无忧网 www.paper51.com ::closesocket(m_sckServer); copyright paper51.com
} copyright paper51.com
m_sckClient[0]= INVALID_SOCKET; http://www.paper51.com m_sckClient[1]= INVALID_SOCKET; 内容来自www.paper51.com
m_sckServer= INVALID_SOCKET; 内容来自论文无忧网 www.paper51.com returnTRUE; 内容来自论文无忧网 www.paper51.com } paper51.com
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