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（五十一）c#Winform自定义控件-文字提示_c# 控件提示语

作者：菜鸟追梦旅行 | 2024-02-25 02:33:35

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c# 控件提示语

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 企鹅群568015492

麻烦博客下方点个【推荐】，谢谢

NuGet

Install-Package HZH_Controls

目录

https://blog.csdn.net/kwwwvagaa/article/details/100586547

用处及效果

  1. 1 HZH_Controls.Forms.FrmAnchorTips.ShowTips(button1, "测试提示信息\nLEFT", AnchorTipsLocation.LEFT);
  2. 2             HZH_Controls.Forms.FrmAnchorTips.ShowTips(button1, "测试提示信息\nRIGHT", AnchorTipsLocation.RIGHT);
  3. 3             HZH_Controls.Forms.FrmAnchorTips.ShowTips(button1, "测试提示信息\nTOP", AnchorTipsLocation.TOP);
  4. 4             HZH_Controls.Forms.FrmAnchorTips.ShowTips(button1, "测试提示信息\nBOTTOM", AnchorTipsLocation.BOTTOM);

 

准备工作

依然是GDI+画图，不懂可以自行百度一下

开始

思路是：根据参数画图，根据图显示不规则窗体

添加一个窗体FrmAnchorTips

重写一些函数

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  1.  1   #region Override
  2.  2 
  3.  3         protected override void OnClosing(CancelEventArgs e)
  4.  4         {
  5.  5             e.Cancel = true;
  6.  6             base.OnClosing(e);
  7.  7             haveHandle = false;
  8.  8             this.Dispose();
  9.  9         }
  10. 10 
  11. 11         protected override void OnHandleCreated(EventArgs e)
  12. 12         {
  13. 13             InitializeStyles();
  14. 14             base.OnHandleCreated(e);
  15. 15             haveHandle = true;
  16. 16         }
  17. 17 
  18. 18         protected override CreateParams CreateParams
  19. 19         {
  20. 20             get
  21. 21             {
  22. 22                 CreateParams cParms = base.CreateParams;
  23. 23                 cParms.ExStyle |= 0x00080000; // WS_EX_LAYERED
  24. 24                 return cParms;
  25. 25             }
  26. 26         }
  27. 27 
  28. 28         #endregion

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  1. 1  private void InitializeStyles()
  2. 2         {
  3. 3             SetStyle(ControlStyles.AllPaintingInWmPaint, true);
  4. 4             SetStyle(ControlStyles.UserPaint, true);
  5. 5             UpdateStyles();
  6. 6         }

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根据图片显示窗体，这个是网上copy的

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  1.  1  #region 根据图片显示窗体    English:Display Forms Based on Pictures
  2.  2         /// <summary>
  3.  3         /// 功能描述:根据图片显示窗体    English:Display Forms Based on Pictures
  4.  4         /// 作　　者:HZH
  5.  5         /// 创建日期:2019-08-29 15:31:16
  6.  6         /// 任务编号:
  7.  7         /// </summary>
  8.  8         /// <param name="bitmap">bitmap</param>
  9.  9         private void SetBits(Bitmap bitmap)
  10. 10         {
  11. 11             if (!haveHandle) return;
  12. 12 
  13. 13             if (!Bitmap.IsCanonicalPixelFormat(bitmap.PixelFormat) || !Bitmap.IsAlphaPixelFormat(bitmap.PixelFormat))
  14. 14                 throw new ApplicationException("The picture must be 32bit picture with alpha channel.");
  15. 15 
  16. 16             IntPtr oldBits = IntPtr.Zero;
  17. 17             IntPtr screenDC = Win32.GetDC(IntPtr.Zero);
  18. 18             IntPtr hBitmap = IntPtr.Zero;
  19. 19             IntPtr memDc = Win32.CreateCompatibleDC(screenDC);
  20. 20 
  21. 21             try
  22. 22             {
  23. 23                 Win32.Point topLoc = new Win32.Point(Left, Top);
  24. 24                 Win32.Size bitMapSize = new Win32.Size(bitmap.Width, bitmap.Height);
  25. 25                 Win32.BLENDFUNCTION blendFunc = new Win32.BLENDFUNCTION();
  26. 26                 Win32.Point srcLoc = new Win32.Point(0, 0);
  27. 27 
  28. 28                 hBitmap = bitmap.GetHbitmap(Color.FromArgb(0));
  29. 29                 oldBits = Win32.SelectObject(memDc, hBitmap);
  30. 30 
  31. 31                 blendFunc.BlendOp = Win32.AC_SRC_OVER;
  32. 32                 blendFunc.SourceConstantAlpha = 255;
  33. 33                 blendFunc.AlphaFormat = Win32.AC_SRC_ALPHA;
  34. 34                 blendFunc.BlendFlags = 0;
  35. 35 
  36. 36                 Win32.UpdateLayeredWindow(Handle, screenDC, ref topLoc, ref bitMapSize, memDc, ref srcLoc, 0, ref blendFunc, Win32.ULW_ALPHA);
  37. 37             }
  38. 38             finally
  39. 39             {
  40. 40                 if (hBitmap != IntPtr.Zero)
  41. 41                 {
  42. 42                     Win32.SelectObject(memDc, oldBits);
  43. 43                     Win32.DeleteObject(hBitmap);
  44. 44                 }
  45. 45                 Win32.ReleaseDC(IntPtr.Zero, screenDC);
  46. 46                 Win32.DeleteDC(memDc);
  47. 47             }
  48. 48         }
  49. 49         #endregion

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然后是win32类

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  1.  1  class Win32
  2.  2     {
  3.  3         [StructLayout(LayoutKind.Sequential)]
  4.  4         public struct Size
  5.  5         {
  6.  6             public Int32 cx;
  7.  7             public Int32 cy;
  8.  8 
  9.  9             public Size(Int32 x, Int32 y)
  10. 10             {
  11. 11                 cx = x;
  12. 12                 cy = y;
  13. 13             }
  14. 14         }
  15. 15 
  16. 16         [StructLayout(LayoutKind.Sequential, Pack = 1)]
  17. 17         public struct BLENDFUNCTION
  18. 18         {
  19. 19             public byte BlendOp;
  20. 20             public byte BlendFlags;
  21. 21             public byte SourceConstantAlpha;
  22. 22             public byte AlphaFormat;
  23. 23         }
  24. 24 
  25. 25         [StructLayout(LayoutKind.Sequential)]
  26. 26         public struct Point
  27. 27         {
  28. 28             public Int32 x;
  29. 29             public Int32 y;
  30. 30 
  31. 31             public Point(Int32 x, Int32 y)
  32. 32             {
  33. 33                 this.x = x;
  34. 34                 this.y = y;
  35. 35             }
  36. 36         }
  37. 37 
  38. 38         public const byte AC_SRC_OVER = 0;
  39. 39         public const Int32 ULW_ALPHA = 2;
  40. 40         public const byte AC_SRC_ALPHA = 1;
  41. 41 
  42. 42         [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
  43. 43         public static extern IntPtr CreateCompatibleDC(IntPtr hDC);
  44. 44 
  45. 45         [DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]
  46. 46         public static extern IntPtr GetDC(IntPtr hWnd);
  47. 47 
  48. 48         [DllImport("gdi32.dll", ExactSpelling = true)]
  49. 49         public static extern IntPtr SelectObject(IntPtr hDC, IntPtr hObj);
  50. 50 
  51. 51         [DllImport("user32.dll", ExactSpelling = true)]
  52. 52         public static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);
  53. 53 
  54. 54         [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
  55. 55         public static extern int DeleteDC(IntPtr hDC);
  56. 56 
  57. 57         [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
  58. 58         public static extern int DeleteObject(IntPtr hObj);
  59. 59 
  60. 60         [DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]
  61. 61         public static extern int UpdateLayeredWindow(IntPtr hwnd, IntPtr hdcDst, ref Point pptDst, ref Size psize, IntPtr hdcSrc, ref Point pptSrc, Int32 crKey, ref BLENDFUNCTION pblend, Int32 dwFlags);
  62. 62 
  63. 63         [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
  64. 64         public static extern IntPtr ExtCreateRegion(IntPtr lpXform, uint nCount, IntPtr rgnData);
  65. 65     }

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然后就是构造函数了，根据传入参数，画出图片并设置窗体

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  1.   1  #region 构造函数    English:Constructor
  2.   2         /// <summary>
  3.   3         /// 功能描述:构造函数    English:Constructor
  4.   4         /// 作　　者:HZH
  5.   5         /// 创建日期:2019-08-29 15:27:51
  6.   6         /// 任务编号:
  7.   7         /// </summary>
  8.   8         /// <param name="rectControl">停靠区域</param>
  9.   9         /// <param name="strMsg">消息</param>
  10.  10         /// <param name="location">显示方位</param>
  11.  11         /// <param name="background">背景色</param>
  12.  12         /// <param name="foreColor">文字颜色</param>
  13.  13         /// <param name="fontSize">文字大小</param>
  14.  14         /// <param name="autoCloseTime">自动关闭时间，当<=0时不自动关闭</param>
  15.  15         private FrmAnchorTips(
  16.  16             Rectangle rectControl,
  17.  17             string strMsg,
  18.  18             AnchorTipsLocation location = AnchorTipsLocation.RIGHT,
  19.  19             Color? background = null,
  20.  20             Color? foreColor = null,
  21.  21             int fontSize = 10,
  22.  22             int autoCloseTime = 5000)
  23.  23         {
  24.  24             InitializeComponent();
  25.  25             Graphics g = this.CreateGraphics();
  26.  26             Font _font = new Font("微软雅黑", fontSize);
  27.  27             Color _background = background == null ? Color.FromArgb(255, 77, 58) : background.Value;
  28.  28             Color _foreColor = foreColor == null ? Color.White : foreColor.Value;
  29.  29             System.Drawing.SizeF sizeText = g.MeasureString(strMsg, _font);
  30.  30             g.Dispose();
  31.  31             var formSize = new Size((int)sizeText.Width + 20, (int)sizeText.Height + 20);
  32.  32             if (formSize.Width < 20)
  33.  33                 formSize.Width = 20;
  34.  34             if (formSize.Height < 20)
  35.  35                 formSize.Height = 20;
  36.  36             if (location == AnchorTipsLocation.LEFT || location == AnchorTipsLocation.RIGHT)
  37.  37             {
  38.  38                 formSize.Width += 20;
  39.  39             }
  40.  40             else
  41.  41             {
  42.  42                 formSize.Height += 20;
  43.  43             }          
  44.  44 
  45.  45             #region 获取窗体path    English:Get the form path
  46.  46             GraphicsPath path = new GraphicsPath();
  47.  47             Rectangle rect;
  48.  48             switch (location)
  49.  49             {
  50.  50                 case AnchorTipsLocation.TOP:
  51.  51                     rect = new Rectangle(1, 1, formSize.Width - 2, formSize.Height - 20 - 1);
  52.  52                     this.Location = new Point(rectControl.X + (rectControl.Width - rect.Width) / 2, rectControl.Y - rect.Height - 20);
  53.  53                     break;
  54.  54                 case AnchorTipsLocation.RIGHT:
  55.  55                     rect = new Rectangle(20, 1, formSize.Width - 20 - 1, formSize.Height - 2);
  56.  56                     this.Location = new Point(rectControl.Right, rectControl.Y + (rectControl.Height - rect.Height) / 2);
  57.  57                     break;
  58.  58                 case AnchorTipsLocation.BOTTOM:
  59.  59                     rect = new Rectangle(1, 20, formSize.Width - 2, formSize.Height - 20 - 1);
  60.  60                     this.Location = new Point(rectControl.X + (rectControl.Width - rect.Width) / 2, rectControl.Bottom);
  61.  61                     break;
  62.  62                 default:
  63.  63                     rect = new Rectangle(1, 1, formSize.Width - 20 - 1, formSize.Height - 2);
  64.  64                     this.Location = new Point(rectControl.X - rect.Width - 20, rectControl.Y + (rectControl.Height - rect.Height) / 2);
  65.  65                     break;
  66.  66             }
  67.  67             int cornerRadius = 2;
  68.  68 
  69.  69             path.AddArc(rect.X, rect.Y, cornerRadius * 2, cornerRadius * 2, 180, 90);//左上角
  70.  70             #region 上边
  71.  71             if (location == AnchorTipsLocation.BOTTOM)
  72.  72             {
  73.  73                 path.AddLine(rect.X + cornerRadius, rect.Y, rect.Left + rect.Width / 2 - 10, rect.Y);//上
  74.  74                 path.AddLine(rect.Left + rect.Width / 2 - 10, rect.Y, rect.Left + rect.Width / 2, rect.Y - 19);//上
  75.  75                 path.AddLine(rect.Left + rect.Width / 2, rect.Y - 19, rect.Left + rect.Width / 2 + 10, rect.Y);//上
  76.  76                 path.AddLine(rect.Left + rect.Width / 2 + 10, rect.Y, rect.Right - cornerRadius * 2, rect.Y);//上
  77.  77             }
  78.  78             else
  79.  79             {
  80.  80                 path.AddLine(rect.X + cornerRadius, rect.Y, rect.Right - cornerRadius * 2, rect.Y);//上
  81.  81             }
  82.  82             #endregion
  83.  83             path.AddArc(rect.X + rect.Width - cornerRadius * 2, rect.Y, cornerRadius * 2, cornerRadius * 2, 270, 90);//右上角
  84.  84             #region 右边
  85.  85             if (location == AnchorTipsLocation.LEFT)
  86.  86             {
  87.  87                 path.AddLine(rect.Right, rect.Y + cornerRadius * 2, rect.Right, rect.Y + rect.Height / 2 - 10);//右
  88.  88                 path.AddLine(rect.Right, rect.Y + rect.Height / 2 - 10, rect.Right + 19, rect.Y + rect.Height / 2);//右
  89.  89                 path.AddLine(rect.Right + 19, rect.Y + rect.Height / 2, rect.Right, rect.Y + rect.Height / 2 + 10);//右
  90.  90                 path.AddLine(rect.Right, rect.Y + rect.Height / 2 + 10, rect.Right, rect.Y + rect.Height - cornerRadius * 2);//右            
  91.  91             }
  92.  92             else
  93.  93             {
  94.  94                 path.AddLine(rect.Right, rect.Y + cornerRadius * 2, rect.Right, rect.Y + rect.Height - cornerRadius * 2);//右
  95.  95             }
  96.  96             #endregion
  97.  97             path.AddArc(rect.X + rect.Width - cornerRadius * 2, rect.Y + rect.Height - cornerRadius * 2, cornerRadius * 2, cornerRadius * 2, 0, 90);//右下角
  98.  98             #region 下边
  99.  99             if (location == AnchorTipsLocation.TOP)
  100. 100             {
  101. 101                 path.AddLine(rect.Right - cornerRadius * 2, rect.Bottom, rect.Left + rect.Width / 2 + 10, rect.Bottom);
  102. 102                 path.AddLine(rect.Left + rect.Width / 2 + 10, rect.Bottom, rect.Left + rect.Width / 2, rect.Bottom + 19);
  103. 103                 path.AddLine(rect.Left + rect.Width / 2, rect.Bottom + 19, rect.Left + rect.Width / 2 - 10, rect.Bottom);
  104. 104                 path.AddLine(rect.Left + rect.Width / 2 - 10, rect.Bottom, rect.X + cornerRadius * 2, rect.Bottom);
  105. 105             }
  106. 106             else
  107. 107             {
  108. 108                 path.AddLine(rect.Right - cornerRadius * 2, rect.Bottom, rect.X + cornerRadius * 2, rect.Bottom);
  109. 109             }
  110. 110             #endregion
  111. 111             path.AddArc(rect.X, rect.Bottom - cornerRadius * 2, cornerRadius * 2, cornerRadius * 2, 90, 90);//左下角
  112. 112             #region 左边
  113. 113             if (location == AnchorTipsLocation.RIGHT)
  114. 114             {
  115. 115                 path.AddLine(rect.Left, rect.Y + cornerRadius * 2, rect.Left, rect.Y + rect.Height / 2 - 10);//左
  116. 116                 path.AddLine(rect.Left, rect.Y + rect.Height / 2 - 10, rect.Left - 19, rect.Y + rect.Height / 2);//左
  117. 117                 path.AddLine(rect.Left - 19, rect.Y + rect.Height / 2, rect.Left, rect.Y + rect.Height / 2 + 10);//左
  118. 118                 path.AddLine(rect.Left, rect.Y + rect.Height / 2 + 10, rect.Left, rect.Y + rect.Height - cornerRadius * 2);//左          
  119. 119             }
  120. 120             else
  121. 121             {
  122. 122                 path.AddLine(rect.X, rect.Bottom - cornerRadius * 2, rect.X, rect.Y + cornerRadius * 2);//左
  123. 123             }
  124. 124             #endregion
  125. 125             path.CloseFigure();
  126. 126             #endregion
  127. 127 
  128. 128             Bitmap bit = new Bitmap(formSize.Width, formSize.Height);
  129. 129             this.Size = formSize;
  130. 130 
  131. 131             #region 画图    English:Drawing
  132. 132             Graphics gBit = Graphics.FromImage(bit);
  133. 133             gBit.SetGDIHigh();
  134. 134             gBit.FillPath(new SolidBrush(_background), path);
  135. 135             gBit.DrawString(strMsg, _font, new SolidBrush(_foreColor), rect.Location + new Size(10, 10));
  136. 136             gBit.Dispose();
  137. 137             #endregion
  138. 138 
  139. 139             SetBits(bit);
  140. 140             if (autoCloseTime > 0)
  141. 141             {
  142. 142                 Timer t = new Timer();
  143. 143                 t.Interval = autoCloseTime;
  144. 144                 t.Tick += (a, b) =>
  145. 145                 {
  146. 146                     this.Close();
  147. 147                 };
  148. 148                 t.Enabled = true;
  149. 149             }
  150. 150         }
  151. 151         #endregion

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再来2个静态函数以供调用

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  1.  1  #region 显示一个提示    English:Show a hint
  2.  2         /// <summary>
  3.  3         /// 功能描述:显示一个提示    English:Show a hint
  4.  4         /// 作　　者:HZH
  5.  5         /// 创建日期:2019-08-29 15:28:58
  6.  6         /// 任务编号:
  7.  7         /// </summary>
  8.  8         /// <param name="parentControl">停靠控件</param>
  9.  9         /// <param name="strMsg">消息</param>
  10. 10         /// <param name="location">显示方位</param>
  11. 11         /// <param name="background">背景色</param>
  12. 12         /// <param name="foreColor">文字颜色</param>
  13. 13         /// <param name="deviation">偏移量</param>
  14. 14         /// <param name="fontSize">文字大小</param>
  15. 15         /// <param name="autoCloseTime">自动关闭时间，当<=0时不自动关闭</param>
  16. 16         public static FrmAnchorTips ShowTips(
  17. 17             Control parentControl,
  18. 18             string strMsg,
  19. 19             AnchorTipsLocation location = AnchorTipsLocation.RIGHT,
  20. 20             Color? background = null,
  21. 21             Color? foreColor = null,
  22. 22             Size? deviation = null,
  23. 23             int fontSize = 10,
  24. 24             int autoCloseTime = 5000)
  25. 25         {
  26. 26             Point p;
  27. 27             if (parentControl is Form)
  28. 28             {
  29. 29                 p = parentControl.Location;
  30. 30             }
  31. 31             else
  32. 32             {
  33. 33                 p = parentControl.Parent.PointToScreen(parentControl.Location);
  34. 34             }
  35. 35             if (deviation != null)
  36. 36             {
  37. 37                 p = p + deviation.Value;
  38. 38             }
  39. 39             return ShowTips(parentControl.FindForm(), new Rectangle(p, parentControl.Size), strMsg, location, background, foreColor, fontSize, autoCloseTime);
  40. 40         }
  41. 41         #endregion
  42. 42 
  43. 43         #region 显示一个提示    English:Show a hint
  44. 44         /// <summary>
  45. 45         /// 功能描述:显示一个提示    English:Show a hint
  46. 46         /// 作　　者:HZH
  47. 47         /// 创建日期:2019-08-29 15:29:07
  48. 48         /// 任务编号:
  49. 49         /// </summary>
  50. 50         /// <param name="parentForm">父窗体</param>
  51. 51         /// <param name="rectControl">停靠区域</param>
  52. 52         /// <param name="strMsg">消息</param>
  53. 53         /// <param name="location">显示方位</param>
  54. 54         /// <param name="background">背景色</param>
  55. 55         /// <param name="foreColor">文字颜色</param>
  56. 56         /// <param name="fontSize">文字大小</param>
  57. 57         /// <param name="autoCloseTime">自动关闭时间，当<=0时不自动关闭</param>
  58. 58         /// <returns>返回值</returns>
  59. 59         public static FrmAnchorTips ShowTips(
  60. 60             Form parentForm,
  61. 61             Rectangle rectControl,
  62. 62             string strMsg,
  63. 63             AnchorTipsLocation location = AnchorTipsLocation.RIGHT,
  64. 64             Color? background = null,
  65. 65             Color? foreColor = null,
  66. 66             int fontSize = 10,
  67. 67             int autoCloseTime = 5000)
  68. 68         {
  69. 69             FrmAnchorTips frm = new FrmAnchorTips(rectControl, strMsg, location, background, foreColor, fontSize, autoCloseTime);
  70. 70             frm.TopMost = true;
  71. 71             frm.Show(parentForm);
  72. 72             return frm;
  73. 73         }
  74. 74         #endregion

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全部代码

  1. using System;
  2. using System.Collections.Generic;
  3. using System.ComponentModel;
  4. using System.Data;
  5. using System.Drawing;
  6. using System.Drawing.Drawing2D;
  7. using System.Linq;
  8. using System.Runtime.InteropServices;
  9. using System.Text;
  10. using System.Windows.Forms;
  11.  
  12. namespace HZH_Controls.Forms
  13. {
  14.     public partial class FrmAnchorTips : Form
  15.     {
  16.         bool haveHandle = false;
  17.         #region 构造函数    English:Constructor
  18.         /// <summary>
  19.         /// 功能描述:构造函数    English:Constructor
  20.         /// 作　　者:HZH
  21.         /// 创建日期:2019-08-29 15:27:51
  22.         /// 任务编号:
  23.         /// </summary>
  24.         /// <param name="rectControl">停靠区域</param>
  25.         /// <param name="strMsg">消息</param>
  26.         /// <param name="location">显示方位</param>
  27.         /// <param name="background">背景色</param>
  28.         /// <param name="foreColor">文字颜色</param>
  29.         /// <param name="fontSize">文字大小</param>
  30.         /// <param name="autoCloseTime">自动关闭时间，当<=0时不自动关闭</param>
  31.         private FrmAnchorTips(
  32.             Rectangle rectControl,
  33.             string strMsg,
  34.             AnchorTipsLocation location = AnchorTipsLocation.RIGHT,
  35.             Color? background = null,
  36.             Color? foreColor = null,
  37.             int fontSize = 10,
  38.             int autoCloseTime = 5000)
  39.         {
  40.             InitializeComponent();
  41.             Graphics g = this.CreateGraphics();
  42.             Font _font = new Font("微软雅黑", fontSize);
  43.             Color _background = background == null ? Color.FromArgb(255, 77, 58) : background.Value;
  44.             Color _foreColor = foreColor == null ? Color.White : foreColor.Value;
  45.             System.Drawing.SizeF sizeText = g.MeasureString(strMsg, _font);
  46.             g.Dispose();
  47.             var formSize = new Size((int)sizeText.Width + 20, (int)sizeText.Height + 20);
  48.             if (formSize.Width < 20)
  49.                 formSize.Width = 20;
  50.             if (formSize.Height < 20)
  51.                 formSize.Height = 20;
  52.             if (location == AnchorTipsLocation.LEFT || location == AnchorTipsLocation.RIGHT)
  53.             {
  54.                 formSize.Width += 20;
  55.             }
  56.             else
  57.             {
  58.                 formSize.Height += 20;
  59.             }          
  60.  
  61.             #region 获取窗体path    English:Get the form path
  62.             GraphicsPath path = new GraphicsPath();
  63.             Rectangle rect;
  64.             switch (location)
  65.             {
  66.                 case AnchorTipsLocation.TOP:
  67.                     rect = new Rectangle(1, 1, formSize.Width - 2, formSize.Height - 20 - 1);
  68.                     this.Location = new Point(rectControl.X + (rectControl.Width - rect.Width) / 2, rectControl.Y - rect.Height - 20);
  69.                     break;
  70.                 case AnchorTipsLocation.RIGHT:
  71.                     rect = new Rectangle(20, 1, formSize.Width - 20 - 1, formSize.Height - 2);
  72.                     this.Location = new Point(rectControl.Right, rectControl.Y + (rectControl.Height - rect.Height) / 2);
  73.                     break;
  74.                 case AnchorTipsLocation.BOTTOM:
  75.                     rect = new Rectangle(1, 20, formSize.Width - 2, formSize.Height - 20 - 1);
  76.                     this.Location = new Point(rectControl.X + (rectControl.Width - rect.Width) / 2, rectControl.Bottom);
  77.                     break;
  78.                 default:
  79.                     rect = new Rectangle(1, 1, formSize.Width - 20 - 1, formSize.Height - 2);
  80.                     this.Location = new Point(rectControl.X - rect.Width - 20, rectControl.Y + (rectControl.Height - rect.Height) / 2);
  81.                     break;
  82.             }
  83.             int cornerRadius = 2;
  84.  
  85.             path.AddArc(rect.X, rect.Y, cornerRadius * 2, cornerRadius * 2, 180, 90);//左上角
  86.             #region 上边
  87.             if (location == AnchorTipsLocation.BOTTOM)
  88.             {
  89.                 path.AddLine(rect.X + cornerRadius, rect.Y, rect.Left + rect.Width / 2 - 10, rect.Y);//上
  90.                 path.AddLine(rect.Left + rect.Width / 2 - 10, rect.Y, rect.Left + rect.Width / 2, rect.Y - 19);//上
  91.                 path.AddLine(rect.Left + rect.Width / 2, rect.Y - 19, rect.Left + rect.Width / 2 + 10, rect.Y);//上
  92.                 path.AddLine(rect.Left + rect.Width / 2 + 10, rect.Y, rect.Right - cornerRadius * 2, rect.Y);//上
  93.             }
  94.             else
  95.             {
  96.                 path.AddLine(rect.X + cornerRadius, rect.Y, rect.Right - cornerRadius * 2, rect.Y);//上
  97.             }
  98.             #endregion
  99.             path.AddArc(rect.X + rect.Width - cornerRadius * 2, rect.Y, cornerRadius * 2, cornerRadius * 2, 270, 90);//右上角
  100.             #region 右边
  101.             if (location == AnchorTipsLocation.LEFT)
  102.             {
  103.                 path.AddLine(rect.Right, rect.Y + cornerRadius * 2, rect.Right, rect.Y + rect.Height / 2 - 10);//右
  104.                 path.AddLine(rect.Right, rect.Y + rect.Height / 2 - 10, rect.Right + 19, rect.Y + rect.Height / 2);//右
  105.                 path.AddLine(rect.Right + 19, rect.Y + rect.Height / 2, rect.Right, rect.Y + rect.Height / 2 + 10);//右
  106.                 path.AddLine(rect.Right, rect.Y + rect.Height / 2 + 10, rect.Right, rect.Y + rect.Height - cornerRadius * 2);//右            
  107.             }
  108.             else
  109.             {
  110.                 path.AddLine(rect.Right, rect.Y + cornerRadius * 2, rect.Right, rect.Y + rect.Height - cornerRadius * 2);//右
  111.             }
  112.             #endregion
  113.             path.AddArc(rect.X + rect.Width - cornerRadius * 2, rect.Y + rect.Height - cornerRadius * 2, cornerRadius * 2, cornerRadius * 2, 0, 90);//右下角
  114.             #region 下边
  115.             if (location == AnchorTipsLocation.TOP)
  116.             {
  117.                 path.AddLine(rect.Right - cornerRadius * 2, rect.Bottom, rect.Left + rect.Width / 2 + 10, rect.Bottom);
  118.                 path.AddLine(rect.Left + rect.Width / 2 + 10, rect.Bottom, rect.Left + rect.Width / 2, rect.Bottom + 19);
  119.                 path.AddLine(rect.Left + rect.Width / 2, rect.Bottom + 19, rect.Left + rect.Width / 2 - 10, rect.Bottom);
  120.                 path.AddLine(rect.Left + rect.Width / 2 - 10, rect.Bottom, rect.X + cornerRadius * 2, rect.Bottom);
  121.             }
  122.             else
  123.             {
  124.                 path.AddLine(rect.Right - cornerRadius * 2, rect.Bottom, rect.X + cornerRadius * 2, rect.Bottom);
  125.             }
  126.             #endregion
  127.             path.AddArc(rect.X, rect.Bottom - cornerRadius * 2, cornerRadius * 2, cornerRadius * 2, 90, 90);//左下角
  128.             #region 左边
  129.             if (location == AnchorTipsLocation.RIGHT)
  130.             {
  131.                 path.AddLine(rect.Left, rect.Y + cornerRadius * 2, rect.Left, rect.Y + rect.Height / 2 - 10);//左
  132.                 path.AddLine(rect.Left, rect.Y + rect.Height / 2 - 10, rect.Left - 19, rect.Y + rect.Height / 2);//左
  133.                 path.AddLine(rect.Left - 19, rect.Y + rect.Height / 2, rect.Left, rect.Y + rect.Height / 2 + 10);//左
  134.                 path.AddLine(rect.Left, rect.Y + rect.Height / 2 + 10, rect.Left, rect.Y + rect.Height - cornerRadius * 2);//左          
  135.             }
  136.             else
  137.             {
  138.                 path.AddLine(rect.X, rect.Bottom - cornerRadius * 2, rect.X, rect.Y + cornerRadius * 2);//左
  139.             }
  140.             #endregion
  141.             path.CloseFigure();
  142.             #endregion
  143.  
  144.             Bitmap bit = new Bitmap(formSize.Width, formSize.Height);
  145.             this.Size = formSize;
  146.  
  147.             #region 画图    English:Drawing
  148.             Graphics gBit = Graphics.FromImage(bit);
  149.             gBit.SetGDIHigh();
  150.             gBit.FillPath(new SolidBrush(_background), path);
  151.             gBit.DrawString(strMsg, _font, new SolidBrush(_foreColor), rect.Location + new Size(10, 10));
  152.             gBit.Dispose();
  153.             #endregion
  154.  
  155.             SetBits(bit);
  156.             if (autoCloseTime > 0)
  157.             {
  158.                 Timer t = new Timer();
  159.                 t.Interval = autoCloseTime;
  160.                 t.Tick += (a, b) =>
  161.                 {
  162.                     this.Close();
  163.                 };
  164.                 t.Enabled = true;
  165.             }
  166.         }
  167.         #endregion
  168.  
  169.         #region 显示一个提示    English:Show a hint
  170.         /// <summary>
  171.         /// 功能描述:显示一个提示    English:Show a hint
  172.         /// 作　　者:HZH
  173.         /// 创建日期:2019-08-29 15:28:58
  174.         /// 任务编号:
  175.         /// </summary>
  176.         /// <param name="parentControl">停靠控件</param>
  177.         /// <param name="strMsg">消息</param>
  178.         /// <param name="location">显示方位</param>
  179.         /// <param name="background">背景色</param>
  180.         /// <param name="foreColor">文字颜色</param>
  181.         /// <param name="deviation">偏移量</param>
  182.         /// <param name="fontSize">文字大小</param>
  183.         /// <param name="autoCloseTime">自动关闭时间，当<=0时不自动关闭</param>
  184.         public static FrmAnchorTips ShowTips(
  185.             Control parentControl,
  186.             string strMsg,
  187.             AnchorTipsLocation location = AnchorTipsLocation.RIGHT,
  188.             Color? background = null,
  189.             Color? foreColor = null,
  190.             Size? deviation = null,
  191.             int fontSize = 10,
  192.             int autoCloseTime = 5000)
  193.         {
  194.             Point p;
  195.             if (parentControl is Form)
  196.             {
  197.                 p = parentControl.Location;
  198.             }
  199.             else
  200.             {
  201.                 p = parentControl.Parent.PointToScreen(parentControl.Location);
  202.             }
  203.             if (deviation != null)
  204.             {
  205.                 p = p + deviation.Value;
  206.             }
  207.             return ShowTips(parentControl.FindForm(), new Rectangle(p, parentControl.Size), strMsg, location, background, foreColor, fontSize, autoCloseTime);
  208.         }
  209.         #endregion
  210.  
  211.         #region 显示一个提示    English:Show a hint
  212.         /// <summary>
  213.         /// 功能描述:显示一个提示    English:Show a hint
  214.         /// 作　　者:HZH
  215.         /// 创建日期:2019-08-29 15:29:07
  216.         /// 任务编号:
  217.         /// </summary>
  218.         /// <param name="parentForm">父窗体</param>
  219.         /// <param name="rectControl">停靠区域</param>
  220.         /// <param name="strMsg">消息</param>
  221.         /// <param name="location">显示方位</param>
  222.         /// <param name="background">背景色</param>
  223.         /// <param name="foreColor">文字颜色</param>
  224.         /// <param name="fontSize">文字大小</param>
  225.         /// <param name="autoCloseTime">自动关闭时间，当<=0时不自动关闭</param>
  226.         /// <returns>返回值</returns>
  227.         public static FrmAnchorTips ShowTips(
  228.             Form parentForm,
  229.             Rectangle rectControl,
  230.             string strMsg,
  231.             AnchorTipsLocation location = AnchorTipsLocation.RIGHT,
  232.             Color? background = null,
  233.             Color? foreColor = null,
  234.             int fontSize = 10,
  235.             int autoCloseTime = 5000)
  236.         {
  237.             FrmAnchorTips frm = new FrmAnchorTips(rectControl, strMsg, location, background, foreColor, fontSize, autoCloseTime);
  238.             frm.TopMost = true;
  239.             frm.Show(parentForm);
  240.             return frm;
  241.         }
  242.         #endregion
  243.  
  244.         #region Override
  245.  
  246.         protected override void OnClosing(CancelEventArgs e)
  247.         {
  248.             e.Cancel = true;
  249.             base.OnClosing(e);
  250.             haveHandle = false;
  251.             this.Dispose();
  252.         }
  253.  
  254.         protected override void OnHandleCreated(EventArgs e)
  255.         {
  256.             InitializeStyles();
  257.             base.OnHandleCreated(e);
  258.             haveHandle = true;
  259.         }
  260.  
  261.         protected override CreateParams CreateParams
  262.         {
  263.             get
  264.             {
  265.                 CreateParams cParms = base.CreateParams;
  266.                 cParms.ExStyle |= 0x00080000; // WS_EX_LAYERED
  267.                 return cParms;
  268.             }
  269.         }
  270.  
  271.         #endregion
  272.  
  273.         private void InitializeStyles()
  274.         {
  275.             SetStyle(ControlStyles.AllPaintingInWmPaint, true);
  276.             SetStyle(ControlStyles.UserPaint, true);
  277.             UpdateStyles();
  278.         }
  279.  
  280.         #region 根据图片显示窗体    English:Display Forms Based on Pictures
  281.         /// <summary>
  282.         /// 功能描述:根据图片显示窗体    English:Display Forms Based on Pictures
  283.         /// 作　　者:HZH
  284.         /// 创建日期:2019-08-29 15:31:16
  285.         /// 任务编号:
  286.         /// </summary>
  287.         /// <param name="bitmap">bitmap</param>
  288.         private void SetBits(Bitmap bitmap)
  289.         {
  290.             if (!haveHandle) return;
  291.  
  292.             if (!Bitmap.IsCanonicalPixelFormat(bitmap.PixelFormat) || !Bitmap.IsAlphaPixelFormat(bitmap.PixelFormat))
  293.                 throw new ApplicationException("The picture must be 32bit picture with alpha channel.");
  294.  
  295.             IntPtr oldBits = IntPtr.Zero;
  296.             IntPtr screenDC = Win32.GetDC(IntPtr.Zero);
  297.             IntPtr hBitmap = IntPtr.Zero;
  298.             IntPtr memDc = Win32.CreateCompatibleDC(screenDC);
  299.  
  300.             try
  301.             {
  302.                 Win32.Point topLoc = new Win32.Point(Left, Top);
  303.                 Win32.Size bitMapSize = new Win32.Size(bitmap.Width, bitmap.Height);
  304.                 Win32.BLENDFUNCTION blendFunc = new Win32.BLENDFUNCTION();
  305.                 Win32.Point srcLoc = new Win32.Point(0, 0);
  306.  
  307.                 hBitmap = bitmap.GetHbitmap(Color.FromArgb(0));
  308.                 oldBits = Win32.SelectObject(memDc, hBitmap);
  309.  
  310.                 blendFunc.BlendOp = Win32.AC_SRC_OVER;
  311.                 blendFunc.SourceConstantAlpha = 255;
  312.                 blendFunc.AlphaFormat = Win32.AC_SRC_ALPHA;
  313.                 blendFunc.BlendFlags = 0;
  314.  
  315.                 Win32.UpdateLayeredWindow(Handle, screenDC, ref topLoc, ref bitMapSize, memDc, ref srcLoc, 0, ref blendFunc, Win32.ULW_ALPHA);
  316.             }
  317.             finally
  318.             {
  319.                 if (hBitmap != IntPtr.Zero)
  320.                 {
  321.                     Win32.SelectObject(memDc, oldBits);
  322.                     Win32.DeleteObject(hBitmap);
  323.                 }
  324.                 Win32.ReleaseDC(IntPtr.Zero, screenDC);
  325.                 Win32.DeleteDC(memDc);
  326.             }
  327.         }
  328.         #endregion
  329.     }
  330.  
  331.     public enum AnchorTipsLocation
  332.     {
  333.         LEFT,
  334.         TOP,
  335.         RIGHT,
  336.         BOTTOM
  337.     }
  338.  
  339.     class Win32
  340.     {
  341.         [StructLayout(LayoutKind.Sequential)]
  342.         public struct Size
  343.         {
  344.             public Int32 cx;
  345.             public Int32 cy;
  346.  
  347.             public Size(Int32 x, Int32 y)
  348.             {
  349.                 cx = x;
  350.                 cy = y;
  351.             }
  352.         }
  353.  
  354.         [StructLayout(LayoutKind.Sequential, Pack = 1)]
  355.         public struct BLENDFUNCTION
  356.         {
  357.             public byte BlendOp;
  358.             public byte BlendFlags;
  359.             public byte SourceConstantAlpha;
  360.             public byte AlphaFormat;
  361.         }
  362.  
  363.         [StructLayout(LayoutKind.Sequential)]
  364.         public struct Point
  365.         {
  366.             public Int32 x;
  367.             public Int32 y;
  368.  
  369.             public Point(Int32 x, Int32 y)
  370.             {
  371.                 this.x = x;
  372.                 this.y = y;
  373.             }
  374.         }
  375.  
  376.         public const byte AC_SRC_OVER = 0;
  377.         public const Int32 ULW_ALPHA = 2;
  378.         public const byte AC_SRC_ALPHA = 1;
  379.  
  380.         [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
  381.         public static extern IntPtr CreateCompatibleDC(IntPtr hDC);
  382.  
  383.         [DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]
  384.         public static extern IntPtr GetDC(IntPtr hWnd);
  385.  
  386.         [DllImport("gdi32.dll", ExactSpelling = true)]
  387.         public static extern IntPtr SelectObject(IntPtr hDC, IntPtr hObj);
  388.  
  389.         [DllImport("user32.dll", ExactSpelling = true)]
  390.         public static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);
  391.  
  392.         [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
  393.         public static extern int DeleteDC(IntPtr hDC);
  394.  
  395.         [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
  396.         public static extern int DeleteObject(IntPtr hObj);
  397.  
  398.         [DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]
  399.         public static extern int UpdateLayeredWindow(IntPtr hwnd, IntPtr hdcDst, ref Point pptDst, ref Size psize, IntPtr hdcSrc, ref Point pptSrc, Int32 crKey, ref BLENDFUNCTION pblend, Int32 dwFlags);
  400.  
  401.         [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
  402.         public static extern IntPtr ExtCreateRegion(IntPtr lpXform, uint nCount, IntPtr rgnData);
  403.     }
  404. }
  1. namespace HZH_Controls.Forms
  2. {
  3.     partial class FrmAnchorTips
  4.     {
  5.         /// <summary>
  6.         /// Required designer variable.
  7.         /// </summary>
  8.         private System.ComponentModel.IContainer components = null;
  9.  
  10.         /// <summary>
  11.         /// Clean up any resources being used.
  12.         /// </summary>
  13.         /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
  14.         protected override void Dispose(bool disposing)
  15.         {
  16.             if (disposing && (components != null))
  17.             {
  18.                 components.Dispose();
  19.             }
  20.             base.Dispose(disposing);
  21.         }
  22.  
  23.         #region Windows Form Designer generated code
  24.  
  25.         /// <summary>
  26.         /// Required method for Designer support - do not modify
  27.         /// the contents of this method with the code editor.
  28.         /// </summary>
  29.         private void InitializeComponent()
  30.         {
  31.             this.SuspendLayout();
  32.             // 
  33.             // FrmAnchorTips
  34.             // 
  35.             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
  36.             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
  37.             this.ClientSize = new System.Drawing.Size(226, 83);
  38.             this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
  39.             this.Name = "FrmAnchorTips";
  40.             this.StartPosition = System.Windows.Forms.FormStartPosition.Manual;
  41.             this.Text = "FrmAnchorTips";
  42.             this.ResumeLayout(false);
  43.  
  44.         }
  45.  
  46.         #endregion
  47.     }
  48. }

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