using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Drawing;
using?System.Data;
using?System.Text;
using?System.Windows.Forms;
using?System.Drawing.Drawing2D;

namespace?SerialCommunication
{
????public?partial?class?ClockControl?:?UserControl
????{
????????const?int?screenWidth?=?200;?//屏幕寬度
????????const?int?screenHeight?=?200;?//屏幕高度
????????public?ClockControl（）
????????{
????????????InitializeComponent（）;

????????????this.Width?=?screenWidth?+?1;
????????????this.Height?=?screenHeight?+?1;
????????????this.DoubleBuffered?=?true;?//控件緩沖，避免閃爍
????????????this.Setstyle（Controlstyles.ResizeRedraw?true）;
????????????clockTimer.Start（）;
????????}
????????private?void?clockTimer_Tick（object?sender?EventArgs?e）
????????{
????????????Invalidate（）;
????????}
????????protected?override?void?OnPaint（PaintEventArgs?e）
????????{
????????????DateTime?dtNow?=?DateTime.Now;
????????????string?dayOfWeek?=?dtNow.ToString（“dddd“?new?System.Globalization.CultureInfo（“zh-cn“））;//星期幾
????????????Brush?brush?=?new?SolidBrush（Color.Black）;?//填充圖形
????????????Pen?pen?=?new?Pen（Color.Black）;?//畫筆
????????????Font?hourFont?=?new?Font（“Arial“?10?Fontstyle.Bold）;//時鐘數字的字體
????????????Font?dateFont?=?new?Font（“Arial“?9）;?//日期的字體
????????????int?dialRadius?=?Math.Min（screenWidth?screenHeight）?/?2;?//圓的半徑

????????????Graphics?g?=?e.Graphics;
????????????g.SmoothingMode?=?SmoothingMode.HighQuality;

????????????//默認坐標系統原點是左上角，現在把原點移到屏幕中心?右下左上對應的軸：xy-x-y
????????????g.TranslateTransform（dialRadius?dialRadius）;

????????????//畫時鐘最外層的圓線（penxywidthheight）
????????????//圓的中心點坐標計算：（width/2+xheight/2+y）據此可得出要使圓在坐標原點（00）的xy坐標值???????????
????????????g.DrawEllipse（pen?-screenWidth?/?2?-dialRadius?screenWidth?screenHeight）;

????????????GraphicsState?state?=?g.Save（）;
????????????//畫矩形、日期、星期幾???????
????????????int?rectWidth?=?70;
????????????int?rectHeight?=?30;
????????????g.DrawRectangle（pen?-rectWidth?/?2?rectHeight?rectWidth?rectHeight）;
????????????g.DrawString（dtNow.ToString（“yyyy-MM-dd“）?dateFont?brush?-rectWidth?/?2?rectHeight?+?2）;
????????????g.DrawString（dayOfWeek.PadLeft（8?‘?‘）?dateFont?brush?-rectWidth?/?2?rectHeight?+?15）;
????????????g.Restore（state）;

????????????//?畫時鐘的60個圓點
????????????//Save（）Restore（state）配合使用，使得平移、縮放、旋轉等操作只對它們作用域之間的代碼有效，
????????????//save開始到restore之間這繪畫，就像有繪制了一個圖層，restore之后將兩個圖層放到一起
????????????state?=?g.Save（）;
????????????for?（int?i?=?0;?i?????????????{
????????????????int?w?=?i?%?5?==?0???5?:?3;
????????????????g.FillEllipse（brush?0?-dialRadius?w?w）;
????????????????//圍繞指定點按照順時針方向旋轉角度360?/?60?=?6度
????????????????g.RotateTransform（6）;
????????????}
????????????g.Restore（state）;

????????????//畫時鐘的12個數字，如果用上面RotateTransform方法則數字會傾斜、倒立，故不用
????????????state?=?g.Save（）;
????????????for?（int?i?=?0;?i?????????????{
????????????????//已知圓中心占坐標（x0y0）半徑r，角度a0則圓上任一點坐標（xy）計

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-09-28?14:10??數據波形上位機\
?????目錄???????????0??2017-09-28?14:10??數據波形上位機\SerialCommunication\
?????目錄???????????0??2017-09-28?14:10??數據波形上位機\SerialCommunication\SerialCommunication\
?????文件????????1026??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication.sln
?????文件???????68608??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication.v12.suo
?????文件?????????187??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\App.config
?????目錄???????????0??2017-09-28?14:10??數據波形上位機\SerialCommunication\SerialCommunication\bin\
?????目錄???????????0??2017-09-28?14:10??數據波形上位機\SerialCommunication\SerialCommunication\bin\Debug\
?????目錄???????????0??2017-09-28?14:10??數據波形上位機\SerialCommunication\SerialCommunication\bin\Debug\Resources\
?????文件???????32034??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\bin\Debug\Resources\close.png
?????文件???????10504??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\bin\Debug\Resources\danger.gif
?????文件????????3307??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\bin\Debug\Resources\danger.png
?????文件????????5538??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\bin\Debug\Resources\normal.jpg
?????文件????????3719??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\bin\Debug\Resources\normal.png
?????文件???????33802??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\bin\Debug\Resources\open.png
?????文件???????29184??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\bin\Debug\SerialCommunication.exe
?????文件?????????187??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\bin\Debug\SerialCommunication.exe.config
?????文件???????56832??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\bin\Debug\SerialCommunication.pdb
?????文件???????24224??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\bin\Debug\SerialCommunication.vshost.exe
?????文件?????????187??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\bin\Debug\SerialCommunication.vshost.exe.config
?????文件?????????490??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\bin\Debug\SerialCommunication.vshost.exe.manifest
?????文件??????307200??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\bin\Debug\ZedGraph.dll
?????文件????????5370??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\ClockControl.cs
?????文件????????1673??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\ClockControl.Designer.cs
?????文件????????6015??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\ClockControl.resx
?????文件???????27482??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\Form1.cs
?????文件???????26774??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\Form1.Designer.cs
?????文件????????6184??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\Form1.resx
?????目錄???????????0??2017-09-28?14:10??數據波形上位機\SerialCommunication\SerialCommunication\obj\
?????目錄???????????0??2017-09-28?14:10??數據波形上位機\SerialCommunication\SerialCommunication\obj\Debug\
?????文件???????11776??2017-06-09?21:23??數據波形上位機\SerialCommunication\SerialCommunication\obj\Debug\DesignTimeResolveAssemblyReferences.cache
............此處省略21個文件信息