WCF基础实例host

说明：  定义了一个用于控制扭转和弯曲周期运动的udf程序，用于计算fluent中动边界案例。(A UDF program is defined to control the periodic motion of torsion and bending, which is used to calculate the dynamic boundary case in fluent.)

直接用winsock api实现寻呼功能 支持完全自控的聊天服务。支持中国联通,河北国信,万声寻呼,中铁寻呼,斯壮寻呼,国讯寻呼等主要干线(Realize the direct use of winsock api paging features fully automatic control of the chat support service. Support of China Unicom, Hebei Guoxin, million voice paging, iron paging, Sizhuang paging, paging inquiry States and other major trunk)

Pop3客户端接收信件的整个流程： 1。连接到pop3服务器（默认端口110） 2。发送用户名（user） 3。发送密码（pass） 4。查询当前邮箱状态（stat） 5。查询服务器上所有邮件UID列表（UIDL） 6。查询本地所有邮件的UID列表，从而罗列出新邮件列表（本地UID列表是POP3客户端记录在日志文件中的） 7。对所有新邮件查询其大小（LIST） 8。下载所有新邮件（RETR）利用List提供的邮件大小信息 9。如果有必要，对所有新邮件标志为删除（DELE） 10。结束对话（QUIT） 11。解析本地下载邮件。(Pop3 client receives the entire flow of letters: 1. Connect to the pop3 server (default port 110) 2. Send user name (user) 3. Send password (pass) 4. Query current mail status (stat) 5. Query server UID list of all messages (UIDL) 6. Query local UID list of all messages, which set out the new mailing list (local UID is a POP3 client list recorded in the log file) 7. For all new e-mail inquiries about their size (LIST) 8. Download all new messages (RETR) to use List of information provided by message size 9. If necessary, for all new signs for the delete message (DELE) 10. The end of the dialogue (QUIT) 11. Analysis of local download your mail.)

MFC 直接使用setTimer c++ 中，也有类似的定时器：CreateWaitableTimer、SetWaitableTimer 其实是windows API(MFC uses setTimer directly In C++, there are similar timers: CreateWaitableTimer, SetWaitableTimer is actually the Windows API.)

C#局域网udp聊天工具,客户端和服务器，实现聊天功能(chat liaotiangongju)

Visual C++ 平台下实现ping命令过程，包括打包发送接受解包等 对网络编程初期学习者很有帮助

图像颜色特征提取 颜色是彩色图像最重要的内容之一，被广泛用于图像检索中。但从图像中提取颜色特征时，很多算法都先要对图像进行量化处理。量化处理容易导致误检，并且产生的图像特征维数较高，不利于检索(qqwxcszcsefxzvczfeczx)

private void Connect_Click(object sender, System.EventArgs e)        {            //将光标置为等待状态            Cursor cr = Cursor.Current;            Cursor.Current = Cursors.WaitCursor;            String a ,b,c;              //用110端口新建POP3服务器连接            Server = new TcpClient(PopServer.Text, 110);            Status.Items.Clear();             try            {                //初始化                NetStrm = Server.GetStream();                RdStrm = new StreamReader(Server.GetStream());                Status.Items.Add(RdStrm.ReadLine());                 //登录服务器过程                Data = "USER " Username.Text CRLF;                szData = System.Text.Encoding.ASCII.GetBytes(Data.ToCharArray());                NetStrm.Write(szData, 0, szData.Length);                Status.Items.Add(RdStrm.ReadLine());                 Data = "PASS " Password.Text CRLF;                szData = System.Text.Encoding.ASCII.GetBytes(Data.ToCharArray());                NetStrm.Write(szData, 0, szData.Length);                Status.Items.Add(RdStrm.ReadLine());                 //向服务器发送STAT命令，从而取得邮箱的相关信息：邮件数量和大小                Data = "STAT" CRLF;                szData = System.Text.Encoding.ASCII.GetBytes(Data.ToCharArray());                NetStrm.Write(szData, 0, szData.Length);                //Status.Items.Add(RdStrm.ReadLine());                 //改变按钮的状态                Connect.Enabled = false;                Disconnect.Enabled = true;                Retrieve.Enabled = true;                 //将光标置回原来状态                Cursor.Current = cr;             }            catch (InvalidOperationException err)            {                Status.Items.Add("Error: " err.ToString());            }        }

利用形态学的形态组合滤波器对数字信号去噪，可低通滤波(Digital signal de-noising, low pass filtering)

疯子ftp上传工具ftp服务器上传ftp客户端ftp服务器客户端传送数据信息到服务器