多线程,网络聊天软件;

BOOL CChatDlg::InitSocket(void){if(INVALID_SOCKET==(m_socket=socket(AF_INET,SOCK_DGRAM,0))){MessageBox(TEXT("套接字创建失败!"));return FALSE;}SOCKADDR_IN addrSock;addrSock.sin_family=AF_INET;addrSock.sin_port=htons(6000);addrSock.sin_addr.S_un.S_addr=htonl(INADDR_ANY);if(SOCKET_ERROR==(bind(m_socket,(SOCKADDR*)&addrSock,sizeof(SOCKADDR)))){MessageBox(TEXT("绑定失败"));closesocket(m_socket);return FALSE;}return TRUE;;}DWORD WINAPI CChatDlg::RecvProc(LPVOID lpParameter){SOCKET sock=((RECVPARAM*)lpParameter)->sock;HWND hwnd=((RECVPARAM*)lpParameter)->hwnd;SOCKADDR_IN addrFrom;int len=sizeof(SOCKADDR);char recvBuf[200]={0};char tempBuf[200];int retval;while(true){retval=recvfrom(sock,recvBuf,200,0,(SOCKADDR*)&addrFrom,&len);if(SOCKET_ERROR==retval){break;}sprintf(tempBuf,"%s说：%s",inet_ntoa(addrFrom.sin_addr),recvBuf);::PostMessage(hwnd,WM_RECVDATA,0,(LPARAM)tempBuf);}return 0;}LRESULT CChatDlg:: OnRecvData(WPARAM wPARAM,LPARAM lPARAM){CString str=CString((char*)lPARAM);CString strTemp;GetDlgItemText(IDC_EDIT_RECV,strTemp);str+="/r/n";str+=strTemp;str+="/r/n";SetDlgItemText(IDC_EDIT_RECV,str);return 0;}void CChatDlg::OnBnClickedBtnSend(){// TODO: 在此添加控件通知处理程序代码DWORD dwIP;((CIPAddressCtrl*)GetDlgItem(IDC_IPADDRESS1))->GetAddress(dwIP);SOCKADDR_IN addrTo;addrTo.sin_addr.S_un.S_addr=htonl(dwIP);addrTo.sin_family=AF_INET;addrTo.sin_port=htons(6000);CString strSend;char buf[200];memset(buf,0,sizeof(buf));GetDlgItemText(IDC_EDIT_SEND,strSend);for(int i=0;i<strSend.GetLength();++i){buf[i]=(char)strSend[i];}sendto(m_socket,buf,strSend.GetLength()+1,0,(SOCKADDR*)&addrTo,sizeof(SOCKADDR));}

 

BOOL CChatDlg::OnInitDialog(){CDialog::OnInitDialog();// 将“关于...”菜单项添加到系统菜单中。// IDM_ABOUTBOX 必须在系统命令范围内。ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);ASSERT(IDM_ABOUTBOX < 0xF000);CMenu* pSysMenu = GetSystemMenu(FALSE);if (pSysMenu != NULL){BOOL bNameValid;CString strAboutMenu;bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);ASSERT(bNameValid);if (!strAboutMenu.IsEmpty()){pSysMenu->AppendMenu(MF_SEPARATOR);pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);}}// 设置此对话框的图标。当应用程序主窗口不是对话框时，框架将自动// 执行此操作SetIcon(m_hIcon, TRUE);// 设置大图标SetIcon(m_hIcon, FALSE);// 设置小图标// TODO: 在此添加额外的初始化代码InitSocket();RECVPARAM *pRecvParam = new RECVPARAM;pRecvParam->sock=m_socket;pRecvParam->hwnd=m_hWnd;HANDLE hThread=CreateThread(NULL,0,RecvProc,(LPVOID)pRecvParam,0,NULL);CloseHandle(hThread);return TRUE; // 除非将焦点设置到控件，否则返回 TRUE} 

 

#define WM_RECVDATA WM_USER+1  自定义的消息,用postMessage发送, afx_msg LRESULT OnRecvData(WPARAM,LPARAM) 形式的消息响应函数, 消息响应映射 ON_MESSAGE(WM_RECVDATA,OnRecvData)