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（六十二）c#Winform自定义控件-警灯（工业）-HZHControls

官网

http://www.hzhcontrols.com

前提

入行已经7,8年了，一直想做一套漂亮点的自定义控件，于是就有了本系列文章。

GitHub：https://github.com/kwwwvagaa/NetWinformControl

码云：https://gitee.com/kwwwvagaa/net_winform_custom_control.git

如果觉得写的还行，请点个 star 支持一下吧

欢迎前来交流探讨：企鹅群568015492

麻烦博客下方点个【推荐】，谢谢

NuGet

Install-Package HZH_Controls

用处及效果

准备工作

依然GDI+，不懂可以先百度了解下

开始

添加一个类UCAlarmLamp，继承自UserControl

添加属性

 1  /// <summary>
 2         /// The lamp color
 3         /// </summary>
 4         private Color[] lampColor = new Color[] { Color.FromArgb(255, 77, 59) };
 5 
 6         /// <summary>
 7         /// Gets or sets the color of the lamp.
 8         /// </summary>
 9         /// <value>The color of the lamp.</value>
10         [Description("灯颜色，当需要闪烁时，至少需要2个及以上颜色，不需要闪烁则至少需要1个颜色"), Category("自定义")]
11         public Color[] LampColor
12         {
13             get { return lampColor; }
14             set
15             {
16                 if (value == null || value.Length <= 0)
17                     return;
18                 lampColor = value;
19                 Refresh();
20             }
21         }
22 
23         /// <summary>
24         /// The lampstand
25         /// </summary>
26         private Color lampstand = Color.FromArgb(105, 105, 105);
27 
28         /// <summary>
29         /// Gets or sets the lampstand.
30         /// </summary>
31         /// <value>The lampstand.</value>
32         [Description("灯座颜色"), Category("自定义")]
33         public Color Lampstand
34         {
35             get { return lampstand; }
36             set { lampstand = value; }
37         }
38 
39         /// <summary>
40         /// The twinkle speed
41         /// </summary>
42         private int twinkleSpeed = 0;
43 
44         /// <summary>
45         /// Gets or sets the twinkle speed.
46         /// </summary>
47         /// <value>The twinkle speed.</value>
48         [Description("闪烁间隔时间（毫秒），当为0时不闪烁"), Category("自定义")]
49         public int TwinkleSpeed
50         {
51             get { return twinkleSpeed; }
52             set
53             {
54                 if (value < 0)
55                     return;
56                 twinkleSpeed = value;
57                 if (value == 0 || lampColor.Length <= 1)
58                 {
59                     timer.Enabled = false;
60                 }
61                 else
62                 {
63                     intColorIndex = 0;
64                     timer.Interval = value;
65                     timer.Enabled = true;
66                 }
67                 Refresh();
68             }
69         }
70         /// <summary>
71         /// The timer
72         /// </summary>
73         Timer timer;
74         /// <summary>
75         /// The int color index
76         /// </summary>
77         int intColorIndex = 0;
78         /// <summary>
79         /// The m rect working
80         /// </summary>
81         Rectangle m_rectWorking;

重绘

 1  protected override void OnPaint(PaintEventArgs e)
 2         {
 3             base.OnPaint(e);
 4             var g = e.Graphics;
 5             g.SetGDIHigh();
 6 
 7             Color c1 = lampColor[intColorIndex];
 8             GraphicsPath path = new GraphicsPath();
 9             path.AddLine(new Point(m_rectWorking.Left, m_rectWorking.Bottom), new Point(m_rectWorking.Left, m_rectWorking.Top + m_rectWorking.Width));
10             path.AddArc(new Rectangle(m_rectWorking.Left, m_rectWorking.Top, m_rectWorking.Width, m_rectWorking.Width), 180f, 180f);
11             path.AddLine(new Point(m_rectWorking.Right, m_rectWorking.Top + m_rectWorking.Width), new Point(m_rectWorking.Right, m_rectWorking.Bottom));
12             path.CloseAllFigures();
13             g.FillPath(new SolidBrush(c1), path);
14 
15             g.FillRectangle(new SolidBrush(lampstand), new Rectangle(5, m_rectWorking.Bottom - 19, this.Width - 10, 10));
16             g.FillRectangle(new SolidBrush(lampstand), new Rectangle(0, m_rectWorking.Bottom - 10, this.Width, 10));
17         }

完整代码

  1 // ***********************************************************************
  2 // Assembly         : HZH_Controls
  3 // Created          : 2019-09-10
  4 //
  5 // ***********************************************************************
  6 // <copyright file="UCAlarmLamp.cs">
  7 //     Copyright by Huang Zhenghui(黄正辉) All, QQ group:568015492 QQ:623128629 Email:623128629@qq.com
  8 // </copyright>
  9 //
 10 // Blog: https://www.cnblogs.com/bfyx
 11 // GitHub：https://github.com/kwwwvagaa/NetWinformControl
 12 // gitee：https://gitee.com/kwwwvagaa/net_winform_custom_control.git
 13 //
 14 // If you use this code, please keep this note.
 15 // ***********************************************************************
 16 using System;
 17 using System.Collections.Generic;
 18 using System.Linq;
 19 using System.Text;
 20 using System.Windows.Forms;
 21 using System.Drawing;
 22 using System.Drawing.Drawing2D;
 23 using System.ComponentModel;
 24 
 25 namespace HZH_Controls.Controls
 26 {
 27     /// <summary>
 28     /// Class UCAlarmLamp.
 29     /// Implements the <see cref="System.Windows.Forms.UserControl" />
 30     /// </summary>
 31     /// <seealso cref="System.Windows.Forms.UserControl" />
 32     public class UCAlarmLamp : UserControl
 33     {
 34         /// <summary>
 35         /// The lamp color
 36         /// </summary>
 37         private Color[] lampColor = new Color[] { Color.FromArgb(255, 77, 59) };
 38 
 39         /// <summary>
 40         /// Gets or sets the color of the lamp.
 41         /// </summary>
 42         /// <value>The color of the lamp.</value>
 43         [Description("灯颜色，当需要闪烁时，至少需要2个及以上颜色，不需要闪烁则至少需要1个颜色"), Category("自定义")]
 44         public Color[] LampColor
 45         {
 46             get { return lampColor; }
 47             set
 48             {
 49                 if (value == null || value.Length <= 0)
 50                     return;
 51                 lampColor = value;
 52                 Refresh();
 53             }
 54         }
 55 
 56         /// <summary>
 57         /// The lampstand
 58         /// </summary>
 59         private Color lampstand = Color.FromArgb(105, 105, 105);
 60 
 61         /// <summary>
 62         /// Gets or sets the lampstand.
 63         /// </summary>
 64         /// <value>The lampstand.</value>
 65         [Description("灯座颜色"), Category("自定义")]
 66         public Color Lampstand
 67         {
 68             get { return lampstand; }
 69             set { lampstand = value; }
 70         }
 71 
 72         /// <summary>
 73         /// The twinkle speed
 74         /// </summary>
 75         private int twinkleSpeed = 0;
 76 
 77         /// <summary>
 78         /// Gets or sets the twinkle speed.
 79         /// </summary>
 80         /// <value>The twinkle speed.</value>
 81         [Description("闪烁间隔时间（毫秒），当为0时不闪烁"), Category("自定义")]
 82         public int TwinkleSpeed
 83         {
 84             get { return twinkleSpeed; }
 85             set
 86             {
 87                 if (value < 0)
 88                     return;
 89                 twinkleSpeed = value;
 90                 if (value == 0 || lampColor.Length <= 1)
 91                 {
 92                     timer.Enabled = false;
 93                 }
 94                 else
 95                 {
 96                     intColorIndex = 0;
 97                     timer.Interval = value;
 98                     timer.Enabled = true;
 99                 }
100                 Refresh();
101             }
102         }
103         /// <summary>
104         /// The timer
105         /// </summary>
106         Timer timer;
107         /// <summary>
108         /// The int color index
109         /// </summary>
110         int intColorIndex = 0;
111         /// <summary>
112         /// The m rect working
113         /// </summary>
114         Rectangle m_rectWorking;
115         /// <summary>
116         /// Initializes a new instance of the <see cref="UCAlarmLamp"/> class.
117         /// </summary>
118         public UCAlarmLamp()
119         {
120             this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
121             this.SetStyle(ControlStyles.DoubleBuffer, true);
122             this.SetStyle(ControlStyles.ResizeRedraw, true);
123             this.SetStyle(ControlStyles.Selectable, true);
124             this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
125             this.SetStyle(ControlStyles.UserPaint, true);
126             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
127             this.SizeChanged += UCAlarmLamp_SizeChanged;
128             this.Size = new Size(50, 50);
129             timer = new Timer();
130             timer.Interval = 200;
131             timer.Tick += timer_Tick;
132         }
133 
134         /// <summary>
135         /// Handles the SizeChanged event of the UCAlarmLamp control.
136         /// </summary>
137         /// <param name="sender">The source of the event.</param>
138         /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
139         void UCAlarmLamp_SizeChanged(object sender, EventArgs e)
140         {
141             m_rectWorking = new Rectangle(10, 0, this.Width - 20, this.Height);
142         }
143         /// <summary>
144         /// Handles the Tick event of the timer control.
145         /// </summary>
146         /// <param name="sender">The source of the event.</param>
147         /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
148         void timer_Tick(object sender, EventArgs e)
149         {
150             intColorIndex++;
151             if (intColorIndex >= lampColor.Length)
152                 intColorIndex = 0;
153             Refresh();
154         }
155         /// <summary>
156         /// 引发 <see cref="E:System.Windows.Forms.Control.Paint" /> 事件。
157         /// </summary>
158         /// <param name="e">包含事件数据的 <see cref="T:System.Windows.Forms.PaintEventArgs" />。</param>
159         protected override void OnPaint(PaintEventArgs e)
160         {
161             base.OnPaint(e);
162             var g = e.Graphics;
163             g.SetGDIHigh();
164 
165             Color c1 = lampColor[intColorIndex];
166             GraphicsPath path = new GraphicsPath();
167             path.AddLine(new Point(m_rectWorking.Left, m_rectWorking.Bottom), new Point(m_rectWorking.Left, m_rectWorking.Top + m_rectWorking.Width));
168             path.AddArc(new Rectangle(m_rectWorking.Left, m_rectWorking.Top, m_rectWorking.Width, m_rectWorking.Width), 180f, 180f);
169             path.AddLine(new Point(m_rectWorking.Right, m_rectWorking.Top + m_rectWorking.Width), new Point(m_rectWorking.Right, m_rectWorking.Bottom));
170             path.CloseAllFigures();
171             g.FillPath(new SolidBrush(c1), path);
172 
173             g.FillRectangle(new SolidBrush(lampstand), new Rectangle(5, m_rectWorking.Bottom - 19, this.Width - 10, 10));
174             g.FillRectangle(new SolidBrush(lampstand), new Rectangle(0, m_rectWorking.Bottom - 10, this.Width, 10));
175         }
176     }
177 }

View Code

最后的话

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原文地址：https://www.cnblogs.com/bfyx/p/11495688.html

（六十二）c#Winform自定义控件-警灯（工业）-HZHControls

官网

前提

NuGet

目录

用处及效果

准备工作

开始

最后的话