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通過代碼繪制正在運行的時鐘圖像,封裝成了用戶控件,值得參考學習
代碼片段和文件信息
using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Drawing;
using?System.Data;
using?System.Linq;
using?System.Text;
using?System.Windows.Forms;
namespace?Test
{
????public?partial?class?AnalogClock?:?UserControl
????{
????????const?float?PI?=?3.141592654F;
????????DateTime?dateTime;
????????float?fRadius;
????????float?fCenterX;
????????float?fCenterY;
????????float?fCenterCircleRadius;
????????float?fHourLength;
????????float?fMinLength;
????????float?fSecLength;
????????float?fHourThickness;
????????float?fMinThickness;
????????float?fSecThickness;
????????bool?bDraw5MinuteTicks?=?true;
????????bool?bDraw1MinuteTicks?=?true;
????????float?fTicksThickness?=?1;
????????Color?hrColor?=?Color.DarkMagenta;
????????Color?minColor?=?Color.Green;
????????Color?secColor?=?Color.Red;
????????Color?circleColor?=?Color.Red;
????????Color?ticksColor?=?Color.Black;
????????//private?System.Windows.Forms.Timer?timer1;
????????//private?System.ComponentModel.IContainer?components;
????????bool?bActive?=?true;
????????DateTime?relativeDateTime?=?new?DateTime();//相對時間
????????TimeSpan?spDiffTime?=?new?TimeSpan();
????????double?dDiffSeconds?=?0;
????????//public?event?EventHandler?TimeChanged;
????????public?AnalogClock()
????????{
????????????InitializeComponent();
????????}
????????private?void?AnalogClock_Load(object?sender?System.EventArgs?e)
????????{
????????????dateTime?=?DateTime.Now;
????????????this.AnalogClock_Resize(sender?e);
????????}
????????private?void?timer1_Tick(object?sender?System.EventArgs?e)
????????{
????????????//if?(dDiffSeconds?==?0)
????????????//{
????????????//????this.dateTime?=?DateTime.Now;
????????????//}
????????????//else
????????????//{
????????????//????this.dateTime?=?System.DateTime.Now?-?spDiffTime;
????????????//}
????????????this.dateTime?=?RelativeDateTime;
????????????this.Refresh();
????????????//TimeChanged(null?null);
????????}
????????public?void?Start()
????????{
????????????timer1.Enabled?=?true;
????????????this.Refresh();
????????}
????????public?void?Stop()
????????{
????????????timer1.Enabled?=?false;
????????}
????????private?void?DrawLine(float?fThickness?float?fLength?Color?color?float?fRadians?System.Windows.Forms.PaintEventArgs?e)
????????{
????????????e.Graphics.DrawLine(new?Pen(color?fThickness)
????????????????fCenterX?-?(float)(fLength?/?9?*?System.Math.Sin(fRadians))
????????????????fCenterY?+?(float)(fLength?/?9?*?System.Math.Cos(fRadians))
????????????????fCenterX?+?(float)(fLength?*?System.Math.Sin(fRadians))
????????????????fCenterY?-?(float)(fLength?*?System.Math.Cos(fRadians)));
????????}
????????private?void?DrawPolygon(float?fThickness?float?fLength?Color?color?float?fRadians?System.Windows.Forms.PaintEventArgs?e)
????????{
????????????PointF?A?=?new?PointF((float)(fCenterX?+?fThickness?*?2?*?System.Math.Sin(fRadians?
?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件???????9378??2016-01-22?17:34??TestUseControl\Test\AnalogClock.cs
?????文件???????9378??2016-01-22?17:34??TestUseControl\Test\AnalogClock.cs.bak
?????文件???????1965??2016-01-22?17:34??TestUseControl\Test\AnalogClock.Designer.cs
?????文件???????1965??2016-01-22?17:34??TestUseControl\Test\AnalogClock.Designer.cs.bak
?????文件???????6008??2016-01-22?17:34??TestUseControl\Test\AnalogClock.resx
?????文件??????14336??2020-09-03?14:39??TestUseControl\Test\bin\Debug\Test.exe
?????文件??????32256??2016-01-22?17:34??TestUseControl\Test\bin\Debug\Test.pdb
?????文件??????14328??2020-09-03?14:39??TestUseControl\Test\bin\Debug\Test.vshost.exe
?????文件????????490??2009-06-11?05:14??TestUseControl\Test\bin\Debug\Test.vshost.exe.manifest
????..A.SH.?????????9??2019-09-24?09:34??TestUseControl\Test\bin\Debug\_desktop.ini
????..A.SH.?????????9??2019-09-24?09:34??TestUseControl\Test\bin\_desktop.ini
?????文件????????739??2016-01-22?17:26??TestUseControl\Test\Form1.cs
?????文件????????739??2016-01-22?17:26??TestUseControl\Test\Form1.cs.bak
?????文件???????3789??2016-01-22?17:26??TestUseControl\Test\Form1.Designer.cs
?????文件???????3789??2016-01-22?17:26??TestUseControl\Test\Form1.Designer.cs.bak
?????文件???????5814??2016-01-22?17:26??TestUseControl\Test\Form1.resx
????..A.SH.?????????9??2019-09-24?09:34??TestUseControl\Test\obj\Debug\TempPE\_desktop.ini
?????文件????????180??2016-01-22?17:34??TestUseControl\Test\obj\Debug\Test.AnalogClock.resources
?????文件????????402??2016-01-22?17:50??TestUseControl\Test\obj\Debug\Test.csproj.FileListAbsolute.txt
?????文件????????911??2016-01-22?17:34??TestUseControl\Test\obj\Debug\Test.csproj.GenerateResource.Cache
?????文件??????41447??2018-01-25?13:51??TestUseControl\Test\obj\Debug\Test.exe
?????文件????????180??2016-01-22?17:34??TestUseControl\Test\obj\Debug\Test.Form1.resources
?????文件??????32256??2016-01-22?17:34??TestUseControl\Test\obj\Debug\Test.pdb
?????文件????????180??2016-01-22?17:34??TestUseControl\Test\obj\Debug\Test.Properties.Resources.resources
????..A.SH.?????????9??2019-09-24?09:34??TestUseControl\Test\obj\Debug\_desktop.ini
????..A.SH.?????????9??2019-09-24?09:34??TestUseControl\Test\obj\_desktop.ini
?????文件????????485??2016-01-22?17:13??TestUseControl\Test\Program.cs
?????文件????????485??2016-01-22?17:13??TestUseControl\Test\Program.cs.bak
?????文件???????1340??2016-01-22?17:00??TestUseControl\Test\Properties\AssemblyInfo.cs
?????文件???????1340??2016-01-22?17:00??TestUseControl\Test\Properties\AssemblyInfo.cs.bak
............此處省略23個文件信息
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