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

  1. Install-Package HZH_Controls

目录

https://www.cnblogs.com/bfyx/p/11364884.html

用处及效果

可用作水泵，风机，涡轮等

准备工作

GDI+画的，不懂的可以自行百度一下

开始

添加2个枚举，分别控制进出风口的位置

  1.    /// <summary>
  2.      /// Enum BlowerEntranceDirection
  3.      /// </summary>
  4.      public enum BlowerEntranceDirection
  5.      {
  6.          /// <summary>
  7.          /// The none
  8.          /// </summary>
  9.          None,
  10.          /// <summary>
  11.          /// The left
  12.          /// </summary>
  13.          Left,
  14.          /// <summary>
  15.          /// The right
  16.          /// </summary>
  17.          Right,
  18.          /// <summary>
  19.          /// Up
  20.          /// </summary>
  21.          Up
  22.      }
  23.  
  24.      /// <summary>
  25.      /// Enum BlowerExitDirection
  26.      /// </summary>
  27.      public enum BlowerExitDirection
  28.      {
  29.          /// <summary>
  30.          /// The left
  31.          /// </summary>
  32.          Left,
  33.          /// <summary>
  34.          /// The right
  35.          /// </summary>
  36.          Right,
  37.          /// <summary>
  38.          /// Up
  39.          /// </summary>
  40.          Up
  41.      }

属性

  1.   /// <summary>
  2.          /// The entrance direction
  3.          /// </summary>
  4.          private BlowerEntranceDirection entranceDirection = BlowerEntranceDirection.None;
  5.  
  6.          /// <summary>
  7.          /// Gets or sets the entrance direction.
  8.          /// </summary>
  9.          /// <value>The entrance direction.</value>
  10.          [Description("入口方向"), Category("自定义")]
  11.          public BlowerEntranceDirection EntranceDirection
  12.          {
  13.              get { return entranceDirection; }
  14.              set
  15.              {
  16.                  entranceDirection = value;
  17.                  Refresh();
  18.              }
  19.          }
  20.  
  21.          /// <summary>
  22.          /// The exit direction
  23.          /// </summary>
  24.          private BlowerExitDirection exitDirection = BlowerExitDirection.Right;
  25.  
  26.          /// <summary>
  27.          /// Gets or sets the exit direction.
  28.          /// </summary>
  29.          /// <value>The exit direction.</value>
  30.          [Description("出口方向"), Category("自定义")]
  31.          public BlowerExitDirection ExitDirection
  32.          {
  33.              get { return exitDirection; }
  34.              set
  35.              {
  36.                  exitDirection = value;
  37.                  Refresh();
  38.              }
  39.          }
  40.  
  41.          /// <summary>
  42.          /// The blower color
  43.          /// </summary>
  44.          private Color blowerColor = Color.FromArgb(, , );
  45.  
  46.          /// <summary>
  47.          /// Gets or sets the color of the blower.
  48.          /// </summary>
  49.          /// <value>The color of the blower.</value>
  50.          [Description("风机颜色"), Category("自定义")]
  51.          public Color BlowerColor
  52.          {
  53.              get { return blowerColor; }
  54.              set
  55.              {
  56.                  blowerColor = value;
  57.                  Refresh();
  58.              }
  59.          }
  60.  
  61.          /// <summary>
  62.          /// The fan color
  63.          /// </summary>
  64.          private Color fanColor = Color.FromArgb(, , );
  65.  
  66.          /// <summary>
  67.          /// Gets or sets the color of the fan.
  68.          /// </summary>
  69.          /// <value>The color of the fan.</value>
  70.          [Description("风叶颜色"), Category("自定义")]
  71.          public Color FanColor
  72.          {
  73.              get { return fanColor; }
  74.              set
  75.              {
  76.                  fanColor = value;
  77.                  Refresh();
  78.              }
  79.          }
  80.  
  81.          /// <summary>
  82.          /// The m rect working
  83.          /// </summary>
  84.          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.              GraphicsPath pathLineIn = new GraphicsPath();
  7.              GraphicsPath pathLineOut = new GraphicsPath();
  8.              int intLinePenWidth = ;
  9.  
  10.              switch (exitDirection)
  11.              {
  12.                  case BlowerExitDirection.Left:
  13.                      g.FillRectangle(new SolidBrush(blowerColor), new Rectangle(, m_rectWorking.Top, this.Width / , m_rectWorking.Height /  - ));
  14.                      intLinePenWidth = m_rectWorking.Height /  - ;
  15.                      pathLineOut.AddLine(new Point(-, m_rectWorking.Top + (m_rectWorking.Height /  - ) / ), new Point(m_rectWorking.Left + m_rectWorking.Width / , m_rectWorking.Top + (m_rectWorking.Height /  - ) / ));
  16.                      g.DrawLine(new Pen(new SolidBrush(blowerColor), ), new Point(, m_rectWorking.Top - ), new Point(, m_rectWorking.Top + (m_rectWorking.Height /  - ) + ));
  17.                      break;
  18.                  case BlowerExitDirection.Right:
  19.                      g.FillRectangle(new SolidBrush(blowerColor), new Rectangle(this.Width / , m_rectWorking.Top, this.Width / , m_rectWorking.Height /  - ));
  20.                      intLinePenWidth = m_rectWorking.Height /  - ;
  21.                      pathLineOut.AddLine(new Point(this.Width + , m_rectWorking.Top + (m_rectWorking.Height /  - ) / ), new Point(m_rectWorking.Left + m_rectWorking.Width / , m_rectWorking.Top + (m_rectWorking.Height /  - ) / ));
  22.                      g.DrawLine(new Pen(new SolidBrush(blowerColor), ), new Point(this.Width - , m_rectWorking.Top - ), new Point(this.Width - , m_rectWorking.Top + (m_rectWorking.Height /  - ) + ));
  23.                      break;
  24.                  case BlowerExitDirection.Up:
  25.                      g.FillRectangle(new SolidBrush(blowerColor), new Rectangle(m_rectWorking.Right - (m_rectWorking.Width /  - ), , m_rectWorking.Width /  - , this.Height / ));
  26.                      intLinePenWidth = m_rectWorking.Width /  - ;
  27.                      pathLineOut.AddLine(new Point(m_rectWorking.Right - (m_rectWorking.Width /  - ) / , -), new Point(m_rectWorking.Right - (m_rectWorking.Width /  - ) / , m_rectWorking.Top + m_rectWorking.Height / ));
  28.                      g.DrawLine(new Pen(new SolidBrush(blowerColor), ), new Point(m_rectWorking.Right + , ), new Point(m_rectWorking.Right - (m_rectWorking.Width /  - ) - , ));
  29.                      break;
  30.              }
  31.  
  32.              switch (entranceDirection)
  33.              {
  34.                  case BlowerEntranceDirection.Left:
  35.                      g.FillRectangle(new SolidBrush(blowerColor), new Rectangle(, m_rectWorking.Bottom - m_rectWorking.Height /  + , this.Width / , m_rectWorking.Height /  - ));
  36.                      pathLineIn.AddLine(new Point(-, m_rectWorking.Bottom - m_rectWorking.Height /  +  + (m_rectWorking.Height /  - ) / ), new Point(m_rectWorking.Left + m_rectWorking.Width / , m_rectWorking.Bottom - m_rectWorking.Height /  +  + (m_rectWorking.Height /  - ) / ));
  37.                      g.DrawLine(new Pen(new SolidBrush(blowerColor), ), new Point(, m_rectWorking.Bottom - m_rectWorking.Height /  +  - ), new Point(, m_rectWorking.Bottom - m_rectWorking.Height /  +  + (m_rectWorking.Height /  - ) + ));
  38.                      break;
  39.                  case BlowerEntranceDirection.Right:
  40.                      g.FillRectangle(new SolidBrush(blowerColor), new Rectangle(this.Width / , m_rectWorking.Bottom - m_rectWorking.Height /  + , this.Width / , m_rectWorking.Height /  - ));
  41.                      pathLineIn.AddLine(new Point(this.Width + , m_rectWorking.Bottom - m_rectWorking.Height /  +  + (m_rectWorking.Height /  - ) / ), new Point(m_rectWorking.Left + m_rectWorking.Width / , m_rectWorking.Bottom - m_rectWorking.Height /  +  + (m_rectWorking.Height /  - ) / ));
  42.                      g.DrawLine(new Pen(new SolidBrush(blowerColor), ), new Point(this.Width - , m_rectWorking.Bottom - m_rectWorking.Height /  +  - ), new Point(this.Width - , m_rectWorking.Bottom - m_rectWorking.Height /  +  + (m_rectWorking.Height /  - ) + ));
  43.                      break;
  44.                  case BlowerEntranceDirection.Up:
  45.                      g.FillRectangle(new SolidBrush(blowerColor), new Rectangle(m_rectWorking.Left, , m_rectWorking.Width /  - , this.Height / ));
  46.                      pathLineIn.AddLine(new Point(m_rectWorking.Left + (m_rectWorking.Width /  - ) / , -), new Point(m_rectWorking.Left + (m_rectWorking.Width /  - ) / , m_rectWorking.Top + m_rectWorking.Height / ));
  47.                      g.DrawLine(new Pen(new SolidBrush(blowerColor), ), new Point(m_rectWorking.Left - , ), new Point(m_rectWorking.Left + (m_rectWorking.Width /  - ) + , ));
  48.                      break;
  49.              }
  50.  
  51.              //渐变色
  52.              int _intPenWidth = intLinePenWidth;
  53.              int intCount = _intPenWidth /  / ;
  54.              for (int i = ; i < intCount; i++)
  55.              {
  56.                  int _penWidth = _intPenWidth /  -  * i;
  57.                  if (_penWidth <= )
  58.                      _penWidth = ;
  59.                  if (entranceDirection != BlowerEntranceDirection.None)
  60.                      g.DrawPath(new Pen(new SolidBrush(Color.FromArgb(, Color.White.R, Color.White.G, Color.White.B)), _penWidth), pathLineIn);
  61.                  g.DrawPath(new Pen(new SolidBrush(Color.FromArgb(, Color.White.R, Color.White.G, Color.White.B)), _penWidth), pathLineOut);
  62.                  if (_penWidth == )
  63.                      break;
  64.              }
  65.  
  66.              //底座
  67.              GraphicsPath gpDZ = new GraphicsPath();
  68.              gpDZ.AddLines(new Point[]
  69.              {
  70.                  new Point( m_rectWorking.Left+m_rectWorking.Width/,m_rectWorking.Top+m_rectWorking.Height/),
  71.                  new Point(m_rectWorking.Left+,this.Height),
  72.                  new Point(m_rectWorking.Right-,this.Height)
  73.              });
  74.              gpDZ.CloseAllFigures();
  75.              g.FillPath(new SolidBrush(blowerColor), gpDZ);
  76.              g.FillPath(new SolidBrush(Color.FromArgb(, Color.White)), gpDZ);
  77.              g.DrawLine(new Pen(new SolidBrush(blowerColor), ), new Point(m_rectWorking.Left, this.Height - ), new Point(m_rectWorking.Right, this.Height - ));
  78.  
  79.              //中心
  80.              g.FillEllipse(new SolidBrush(blowerColor), m_rectWorking);
  81.              g.FillEllipse(new SolidBrush(Color.FromArgb(, Color.White)), m_rectWorking);
  82.  
  83.              //扇叶
  84.              Rectangle _rect = new Rectangle(m_rectWorking.Left + (m_rectWorking.Width - (m_rectWorking.Width /  * )) / , m_rectWorking.Top + (m_rectWorking.Height - (m_rectWorking.Width /  * )) / , (m_rectWorking.Width /  * ), (m_rectWorking.Width /  * ));
  85.  
  86.              int _splitCount = ;
  87.              float fltSplitValue = 360F / (float)_splitCount;
  88.              for (int i = ; i <= _splitCount; i++)
  89.              {
  90.                  float fltAngle = (fltSplitValue * i - ) % ;
  91.                  float fltY1 = (float)(_rect.Top + _rect.Width /  - ((_rect.Width / ) * Math.Sin(Math.PI * (fltAngle / 180.00F))));
  92.                  float fltX1 = (float)(_rect.Left + (_rect.Width /  - ((_rect.Width / ) * Math.Cos(Math.PI * (fltAngle / 180.00F)))));
  93.                  float fltY2 = ;
  94.                  float fltX2 = ;
  95.  
  96.                  fltY2 = (float)(_rect.Top + _rect.Width /  - ((_rect.Width / ) * Math.Sin(Math.PI * (fltAngle / 180.00F))));
  97.                  fltX2 = (float)(_rect.Left + (_rect.Width /  - ((_rect.Width / ) * Math.Cos(Math.PI * (fltAngle / 180.00F)))));
  98.  
  99.                  g.DrawLine(new Pen(new SolidBrush(fanColor), ), new PointF(fltX1, fltY1), new PointF(fltX2, fltY2));
  100.              }
  101.  
  102.              g.FillEllipse(new SolidBrush(fanColor), new Rectangle(_rect.Left + _rect.Width /  - _rect.Width /  + , _rect.Top + _rect.Width /  - _rect.Width /  + , _rect.Width /  - , _rect.Width /  - ));
  103.              g.FillEllipse(new SolidBrush(Color.FromArgb(, Color.White)), new Rectangle(_rect.Left - , _rect.Top - , _rect.Width + , _rect.Height + ));
  104.          }

全部代码

  1.  // ***********************************************************************
  2.  // Assembly         : HZH_Controls
  3.  // Created          : 2019-09-09
  4.  //
  5.  // ***********************************************************************
  6.  // <copyright file="UCBlower.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 UCBlower.
  29.      /// Implements the <see cref="System.Windows.Forms.UserControl" />
  30.      /// </summary>
  31.      /// <seealso cref="System.Windows.Forms.UserControl" />
  32.      public class UCBlower : UserControl
  33.      {
  34.          /// <summary>
  35.          /// The entrance direction
  36.          /// </summary>
  37.          private BlowerEntranceDirection entranceDirection = BlowerEntranceDirection.None;
  38.  
  39.          /// <summary>
  40.          /// Gets or sets the entrance direction.
  41.          /// </summary>
  42.          /// <value>The entrance direction.</value>
  43.          [Description("入口方向"), Category("自定义")]
  44.          public BlowerEntranceDirection EntranceDirection
  45.          {
  46.              get { return entranceDirection; }
  47.              set
  48.              {
  49.                  entranceDirection = value;
  50.                  Refresh();
  51.              }
  52.          }
  53.  
  54.          /// <summary>
  55.          /// The exit direction
  56.          /// </summary>
  57.          private BlowerExitDirection exitDirection = BlowerExitDirection.Right;
  58.  
  59.          /// <summary>
  60.          /// Gets or sets the exit direction.
  61.          /// </summary>
  62.          /// <value>The exit direction.</value>
  63.          [Description("出口方向"), Category("自定义")]
  64.          public BlowerExitDirection ExitDirection
  65.          {
  66.              get { return exitDirection; }
  67.              set
  68.              {
  69.                  exitDirection = value;
  70.                  Refresh();
  71.              }
  72.          }
  73.  
  74.          /// <summary>
  75.          /// The blower color
  76.          /// </summary>
  77.          private Color blowerColor = Color.FromArgb(, , );
  78.  
  79.          /// <summary>
  80.          /// Gets or sets the color of the blower.
  81.          /// </summary>
  82.          /// <value>The color of the blower.</value>
  83.          [Description("风机颜色"), Category("自定义")]
  84.          public Color BlowerColor
  85.          {
  86.              get { return blowerColor; }
  87.              set
  88.              {
  89.                  blowerColor = value;
  90.                  Refresh();
  91.              }
  92.          }
  93.  
  94.          /// <summary>
  95.          /// The fan color
  96.          /// </summary>
  97.          private Color fanColor = Color.FromArgb(, , );
  98.  
  99.          /// <summary>
  100.          /// Gets or sets the color of the fan.
  101.          /// </summary>
  102.          /// <value>The color of the fan.</value>
  103.          [Description("风叶颜色"), Category("自定义")]
  104.          public Color FanColor
  105.          {
  106.              get { return fanColor; }
  107.              set
  108.              {
  109.                  fanColor = value;
  110.                  Refresh();
  111.              }
  112.          }
  113.  
  114.          /// <summary>
  115.          /// The m rect working
  116.          /// </summary>
  117.          Rectangle m_rectWorking;
  118.  
  119.          /// <summary>
  120.          /// Initializes a new instance of the <see cref="UCBlower"/> class.
  121.          /// </summary>
  122.          public UCBlower()
  123.          {
  124.              this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
  125.              this.SetStyle(ControlStyles.DoubleBuffer, true);
  126.              this.SetStyle(ControlStyles.ResizeRedraw, true);
  127.              this.SetStyle(ControlStyles.Selectable, true);
  128.              this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
  129.              this.SetStyle(ControlStyles.UserPaint, true);
  130.              this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
  131.              this.SizeChanged += UCBlower_SizeChanged;
  132.              this.Size = new Size(, );
  133.  
  134.          }
  135.  
  136.          /// <summary>
  137.          /// Handles the SizeChanged event of the UCBlower control.
  138.          /// </summary>
  139.          /// <param name="sender">The source of the event.</param>
  140.          /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
  141.          void UCBlower_SizeChanged(object sender, EventArgs e)
  142.          {
  143.              int intMin = Math.Min(this.Width, this.Height);
  144.              m_rectWorking = new Rectangle((this.Width - (intMin /  * )) / , (this.Height - (intMin /  * )) / , (intMin /  * ), (intMin /  * ));
  145.          }
  146.  
  147.          /// <summary>
  148.          /// 引发 <see cref="E:System.Windows.Forms.Control.Paint" /> 事件。
  149.          /// </summary>
  150.          /// <param name="e">包含事件数据的 <see cref="T:System.Windows.Forms.PaintEventArgs" />。</param>
  151.          protected override void OnPaint(PaintEventArgs e)
  152.          {
  153.              base.OnPaint(e);
  154.              var g = e.Graphics;
  155.              g.SetGDIHigh();
  156.              GraphicsPath pathLineIn = new GraphicsPath();
  157.              GraphicsPath pathLineOut = new GraphicsPath();
  158.              int intLinePenWidth = ;
  159.  
  160.              switch (exitDirection)
  161.              {
  162.                  case BlowerExitDirection.Left:
  163.                      g.FillRectangle(new SolidBrush(blowerColor), new Rectangle(, m_rectWorking.Top, this.Width / , m_rectWorking.Height /  - ));
  164.                      intLinePenWidth = m_rectWorking.Height /  - ;
  165.                      pathLineOut.AddLine(new Point(-, m_rectWorking.Top + (m_rectWorking.Height /  - ) / ), new Point(m_rectWorking.Left + m_rectWorking.Width / , m_rectWorking.Top + (m_rectWorking.Height /  - ) / ));
  166.                      g.DrawLine(new Pen(new SolidBrush(blowerColor), ), new Point(, m_rectWorking.Top - ), new Point(, m_rectWorking.Top + (m_rectWorking.Height /  - ) + ));
  167.                      break;
  168.                  case BlowerExitDirection.Right:
  169.                      g.FillRectangle(new SolidBrush(blowerColor), new Rectangle(this.Width / , m_rectWorking.Top, this.Width / , m_rectWorking.Height /  - ));
  170.                      intLinePenWidth = m_rectWorking.Height /  - ;
  171.                      pathLineOut.AddLine(new Point(this.Width + , m_rectWorking.Top + (m_rectWorking.Height /  - ) / ), new Point(m_rectWorking.Left + m_rectWorking.Width / , m_rectWorking.Top + (m_rectWorking.Height /  - ) / ));
  172.                      g.DrawLine(new Pen(new SolidBrush(blowerColor), ), new Point(this.Width - , m_rectWorking.Top - ), new Point(this.Width - , m_rectWorking.Top + (m_rectWorking.Height /  - ) + ));
  173.                      break;
  174.                  case BlowerExitDirection.Up:
  175.                      g.FillRectangle(new SolidBrush(blowerColor), new Rectangle(m_rectWorking.Right - (m_rectWorking.Width /  - ), , m_rectWorking.Width /  - , this.Height / ));
  176.                      intLinePenWidth = m_rectWorking.Width /  - ;
  177.                      pathLineOut.AddLine(new Point(m_rectWorking.Right - (m_rectWorking.Width /  - ) / , -), new Point(m_rectWorking.Right - (m_rectWorking.Width /  - ) / , m_rectWorking.Top + m_rectWorking.Height / ));
  178.                      g.DrawLine(new Pen(new SolidBrush(blowerColor), ), new Point(m_rectWorking.Right + , ), new Point(m_rectWorking.Right - (m_rectWorking.Width /  - ) - , ));
  179.                      break;
  180.              }
  181.  
  182.              switch (entranceDirection)
  183.              {
  184.                  case BlowerEntranceDirection.Left:
  185.                      g.FillRectangle(new SolidBrush(blowerColor), new Rectangle(, m_rectWorking.Bottom - m_rectWorking.Height /  + , this.Width / , m_rectWorking.Height /  - ));
  186.                      pathLineIn.AddLine(new Point(-, m_rectWorking.Bottom - m_rectWorking.Height /  +  + (m_rectWorking.Height /  - ) / ), new Point(m_rectWorking.Left + m_rectWorking.Width / , m_rectWorking.Bottom - m_rectWorking.Height /  +  + (m_rectWorking.Height /  - ) / ));
  187.                      g.DrawLine(new Pen(new SolidBrush(blowerColor), ), new Point(, m_rectWorking.Bottom - m_rectWorking.Height /  +  - ), new Point(, m_rectWorking.Bottom - m_rectWorking.Height /  +  + (m_rectWorking.Height /  - ) + ));
  188.                      break;
  189.                  case BlowerEntranceDirection.Right:
  190.                      g.FillRectangle(new SolidBrush(blowerColor), new Rectangle(this.Width / , m_rectWorking.Bottom - m_rectWorking.Height /  + , this.Width / , m_rectWorking.Height /  - ));
  191.                      pathLineIn.AddLine(new Point(this.Width + , m_rectWorking.Bottom - m_rectWorking.Height /  +  + (m_rectWorking.Height /  - ) / ), new Point(m_rectWorking.Left + m_rectWorking.Width / , m_rectWorking.Bottom - m_rectWorking.Height /  +  + (m_rectWorking.Height /  - ) / ));
  192.                      g.DrawLine(new Pen(new SolidBrush(blowerColor), ), new Point(this.Width - , m_rectWorking.Bottom - m_rectWorking.Height /  +  - ), new Point(this.Width - , m_rectWorking.Bottom - m_rectWorking.Height /  +  + (m_rectWorking.Height /  - ) + ));
  193.                      break;
  194.                  case BlowerEntranceDirection.Up:
  195.                      g.FillRectangle(new SolidBrush(blowerColor), new Rectangle(m_rectWorking.Left, , m_rectWorking.Width /  - , this.Height / ));
  196.                      pathLineIn.AddLine(new Point(m_rectWorking.Left + (m_rectWorking.Width /  - ) / , -), new Point(m_rectWorking.Left + (m_rectWorking.Width /  - ) / , m_rectWorking.Top + m_rectWorking.Height / ));
  197.                      g.DrawLine(new Pen(new SolidBrush(blowerColor), ), new Point(m_rectWorking.Left - , ), new Point(m_rectWorking.Left + (m_rectWorking.Width /  - ) + , ));
  198.                      break;
  199.              }
  200.  
  201.              //渐变色
  202.              int _intPenWidth = intLinePenWidth;
  203.              int intCount = _intPenWidth /  / ;
  204.              for (int i = ; i < intCount; i++)
  205.              {
  206.                  int _penWidth = _intPenWidth /  -  * i;
  207.                  if (_penWidth <= )
  208.                      _penWidth = ;
  209.                  if (entranceDirection != BlowerEntranceDirection.None)
  210.                      g.DrawPath(new Pen(new SolidBrush(Color.FromArgb(, Color.White.R, Color.White.G, Color.White.B)), _penWidth), pathLineIn);
  211.                  g.DrawPath(new Pen(new SolidBrush(Color.FromArgb(, Color.White.R, Color.White.G, Color.White.B)), _penWidth), pathLineOut);
  212.                  if (_penWidth == )
  213.                      break;
  214.              }
  215.  
  216.              //底座
  217.              GraphicsPath gpDZ = new GraphicsPath();
  218.              gpDZ.AddLines(new Point[]
  219.              {
  220.                  new Point( m_rectWorking.Left+m_rectWorking.Width/,m_rectWorking.Top+m_rectWorking.Height/),
  221.                  new Point(m_rectWorking.Left+,this.Height),
  222.                  new Point(m_rectWorking.Right-,this.Height)
  223.              });
  224.              gpDZ.CloseAllFigures();
  225.              g.FillPath(new SolidBrush(blowerColor), gpDZ);
  226.              g.FillPath(new SolidBrush(Color.FromArgb(, Color.White)), gpDZ);
  227.              g.DrawLine(new Pen(new SolidBrush(blowerColor), ), new Point(m_rectWorking.Left, this.Height - ), new Point(m_rectWorking.Right, this.Height - ));
  228.  
  229.              //中心
  230.              g.FillEllipse(new SolidBrush(blowerColor), m_rectWorking);
  231.              g.FillEllipse(new SolidBrush(Color.FromArgb(, Color.White)), m_rectWorking);
  232.  
  233.              //扇叶
  234.              Rectangle _rect = new Rectangle(m_rectWorking.Left + (m_rectWorking.Width - (m_rectWorking.Width /  * )) / , m_rectWorking.Top + (m_rectWorking.Height - (m_rectWorking.Width /  * )) / , (m_rectWorking.Width /  * ), (m_rectWorking.Width /  * ));
  235.  
  236.              int _splitCount = ;
  237.              float fltSplitValue = 360F / (float)_splitCount;
  238.              for (int i = ; i <= _splitCount; i++)
  239.              {
  240.                  float fltAngle = (fltSplitValue * i - ) % ;
  241.                  float fltY1 = (float)(_rect.Top + _rect.Width /  - ((_rect.Width / ) * Math.Sin(Math.PI * (fltAngle / 180.00F))));
  242.                  float fltX1 = (float)(_rect.Left + (_rect.Width /  - ((_rect.Width / ) * Math.Cos(Math.PI * (fltAngle / 180.00F)))));
  243.                  float fltY2 = ;
  244.                  float fltX2 = ;
  245.  
  246.                  fltY2 = (float)(_rect.Top + _rect.Width /  - ((_rect.Width / ) * Math.Sin(Math.PI * (fltAngle / 180.00F))));
  247.                  fltX2 = (float)(_rect.Left + (_rect.Width /  - ((_rect.Width / ) * Math.Cos(Math.PI * (fltAngle / 180.00F)))));
  248.  
  249.                  g.DrawLine(new Pen(new SolidBrush(fanColor), ), new PointF(fltX1, fltY1), new PointF(fltX2, fltY2));
  250.              }
  251.  
  252.              g.FillEllipse(new SolidBrush(fanColor), new Rectangle(_rect.Left + _rect.Width /  - _rect.Width /  + , _rect.Top + _rect.Width /  - _rect.Width /  + , _rect.Width /  - , _rect.Width /  - ));
  253.              g.FillEllipse(new SolidBrush(Color.FromArgb(, Color.White)), new Rectangle(_rect.Left - , _rect.Top - , _rect.Width + , _rect.Height + ));
  254.          }
  255.      }
  256.      /// <summary>
  257.      /// Enum BlowerEntranceDirection
  258.      /// </summary>
  259.      public enum BlowerEntranceDirection
  260.      {
  261.          /// <summary>
  262.          /// The none
  263.          /// </summary>
  264.          None,
  265.          /// <summary>
  266.          /// The left
  267.          /// </summary>
  268.          Left,
  269.          /// <summary>
  270.          /// The right
  271.          /// </summary>
  272.          Right,
  273.          /// <summary>
  274.          /// Up
  275.          /// </summary>
  276.          Up
  277.      }
  278.  
  279.      /// <summary>
  280.      /// Enum BlowerExitDirection
  281.      /// </summary>
  282.      public enum BlowerExitDirection
  283.      {
  284.          /// <summary>
  285.          /// The left
  286.          /// </summary>
  287.          Left,
  288.          /// <summary>
  289.          /// The right
  290.          /// </summary>
  291.          Right,
  292.          /// <summary>
  293.          /// Up
  294.          /// </summary>
  295.          Up
  296.      }
  297.  }

添加一个类UCBlower ，继承UserControl

最后的话

如果你喜欢的话，请到 https://gitee.com/kwwwvagaa/net_winform_custom_control 点个星星吧

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