（五十一）c#Winform自定义控件-文字提示-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

目录

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

用处及效果

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

   #region Override

         protected override void OnClosing(CancelEventArgs e)
         {
             e.Cancel = true;
             base.OnClosing(e);
             haveHandle = false;
             this.Dispose();
         }

         protected override void OnHandleCreated(EventArgs e)
         {
             InitializeStyles();
             base.OnHandleCreated(e);
             haveHandle = true;
         }

         protected override CreateParams CreateParams
         {
             get
             {
                 CreateParams cParms = base.CreateParams;
                 cParms.ExStyle |= 0x00080000; // WS_EX_LAYERED
                 return cParms;
             }
         }

         #endregion

  private void InitializeStyles()
         {
             SetStyle(ControlStyles.AllPaintingInWmPaint, true);
             SetStyle(ControlStyles.UserPaint, true);
             UpdateStyles();
         }

根据图片显示窗体，这个是网上copy的

  #region 根据图片显示窗体    English:Display Forms Based on Pictures
         /// <summary>
         /// 功能描述:根据图片显示窗体    English:Display Forms Based on Pictures
         /// 作　　者:HZH
         /// 创建日期:2019-08-29 15:31:16
         /// 任务编号:
         /// </summary>
         /// <param name="bitmap">bitmap</param>
         private void SetBits(Bitmap bitmap)
         {
             if (!haveHandle) return;

             if (!Bitmap.IsCanonicalPixelFormat(bitmap.PixelFormat) || !Bitmap.IsAlphaPixelFormat(bitmap.PixelFormat))
                 throw new ApplicationException("The picture must be 32bit picture with alpha channel.");

             IntPtr oldBits = IntPtr.Zero;
             IntPtr screenDC = Win32.GetDC(IntPtr.Zero);
             IntPtr hBitmap = IntPtr.Zero;
             IntPtr memDc = Win32.CreateCompatibleDC(screenDC);

             try
             {
                 Win32.Point topLoc = new Win32.Point(Left, Top);
                 Win32.Size bitMapSize = new Win32.Size(bitmap.Width, bitmap.Height);
                 Win32.BLENDFUNCTION blendFunc = new Win32.BLENDFUNCTION();
                 Win32.Point srcLoc = new Win32.Point(, );

                 hBitmap = bitmap.GetHbitmap(Color.FromArgb());
                 oldBits = Win32.SelectObject(memDc, hBitmap);

                 blendFunc.BlendOp = Win32.AC_SRC_OVER;
                 blendFunc.SourceConstantAlpha = ;
                 blendFunc.AlphaFormat = Win32.AC_SRC_ALPHA;
                 blendFunc.BlendFlags = ;

                 Win32.UpdateLayeredWindow(Handle, screenDC, ref topLoc, ref bitMapSize, memDc, ref srcLoc, , ref blendFunc, Win32.ULW_ALPHA);
             }
             finally
             {
                 if (hBitmap != IntPtr.Zero)
                 {
                     Win32.SelectObject(memDc, oldBits);
                     Win32.DeleteObject(hBitmap);
                 }
                 Win32.ReleaseDC(IntPtr.Zero, screenDC);
                 Win32.DeleteDC(memDc);
             }
         }
         #endregion

然后是win32类

  class Win32
     {
         [StructLayout(LayoutKind.Sequential)]
         public struct Size
         {
             public Int32 cx;
             public Int32 cy;

             public Size(Int32 x, Int32 y)
             {
                 cx = x;
                 cy = y;
             }
         }

         [StructLayout(LayoutKind.Sequential, Pack = )]
         public struct BLENDFUNCTION
         {
             public byte BlendOp;
             public byte BlendFlags;
             public byte SourceConstantAlpha;
             public byte AlphaFormat;
         }

         [StructLayout(LayoutKind.Sequential)]
         public struct Point
         {
             public Int32 x;
             public Int32 y;

             public Point(Int32 x, Int32 y)
             {
                 this.x = x;
                 this.y = y;
             }
         }

         public const byte AC_SRC_OVER = ;
         public const Int32 ULW_ALPHA = ;
         public const byte AC_SRC_ALPHA = ;

         [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
         public static extern IntPtr CreateCompatibleDC(IntPtr hDC);

         [DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]
         public static extern IntPtr GetDC(IntPtr hWnd);

         [DllImport("gdi32.dll", ExactSpelling = true)]
         public static extern IntPtr SelectObject(IntPtr hDC, IntPtr hObj);

         [DllImport("user32.dll", ExactSpelling = true)]
         public static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);

         [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
         public static extern int DeleteDC(IntPtr hDC);

         [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
         public static extern int DeleteObject(IntPtr hObj);

         [DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]
         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);

         [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
         public static extern IntPtr ExtCreateRegion(IntPtr lpXform, uint nCount, IntPtr rgnData);
     }

然后就是构造函数了，根据传入参数，画出图片并设置窗体

  #region 构造函数    English:Constructor
         /// <summary>
         /// 功能描述:构造函数    English:Constructor
         /// 作　　者:HZH
         /// 创建日期:2019-08-29 15:27:51
         /// 任务编号:
         /// </summary>
         /// <param name="rectControl">停靠区域</param>
         /// <param name="strMsg">消息</param>
         /// <param name="location">显示方位</param>
         /// <param name="background">背景色</param>
         /// <param name="foreColor">文字颜色</param>
         /// <param name="fontSize">文字大小</param>
         /// <param name="autoCloseTime">自动关闭时间，当<=0时不自动关闭</param>
         private FrmAnchorTips(
             Rectangle rectControl,
             string strMsg,
             AnchorTipsLocation location = AnchorTipsLocation.RIGHT,
             Color? background = null,
             Color? foreColor = null,
             int fontSize = ,
             int autoCloseTime = )
         {
             InitializeComponent();
             Graphics g = this.CreateGraphics();
             Font _font = new Font("微软雅黑", fontSize);
             Color _background = background == null ? Color.FromArgb(, , ) : background.Value;
             Color _foreColor = foreColor == null ? Color.White : foreColor.Value;
             System.Drawing.SizeF sizeText = g.MeasureString(strMsg, _font);
             g.Dispose();
             var formSize = new Size((int)sizeText.Width + , (int)sizeText.Height + );
             if (formSize.Width < )
                 formSize.Width = ;
             if (formSize.Height < )
                 formSize.Height = ;
             if (location == AnchorTipsLocation.LEFT || location == AnchorTipsLocation.RIGHT)
             {
                 formSize.Width += ;
             }
             else
             {
                 formSize.Height += ;
             }          

             #region 获取窗体path    English:Get the form path
             GraphicsPath path = new GraphicsPath();
             Rectangle rect;
             switch (location)
             {
                 case AnchorTipsLocation.TOP:
                     rect = new Rectangle(, , formSize.Width - , formSize.Height -  - );
                     this.Location = new Point(rectControl.X + (rectControl.Width - rect.Width) / , rectControl.Y - rect.Height - );
                     break;
                 case AnchorTipsLocation.RIGHT:
                     rect = new Rectangle(, , formSize.Width -  - , formSize.Height - );
                     this.Location = new Point(rectControl.Right, rectControl.Y + (rectControl.Height - rect.Height) / );
                     break;
                 case AnchorTipsLocation.BOTTOM:
                     rect = new Rectangle(, , formSize.Width - , formSize.Height -  - );
                     this.Location = new Point(rectControl.X + (rectControl.Width - rect.Width) / , rectControl.Bottom);
                     break;
                 default:
                     rect = new Rectangle(, , formSize.Width -  - , formSize.Height - );
                     this.Location = new Point(rectControl.X - rect.Width - , rectControl.Y + (rectControl.Height - rect.Height) / );
                     break;
             }
             int cornerRadius = ;

             path.AddArc(rect.X, rect.Y, cornerRadius * , cornerRadius * , , );//左上角
             #region 上边
             if (location == AnchorTipsLocation.BOTTOM)
             {
                 path.AddLine(rect.X + cornerRadius, rect.Y, rect.Left + rect.Width /  - , rect.Y);//上
                 path.AddLine(rect.Left + rect.Width /  - , rect.Y, rect.Left + rect.Width / , rect.Y - );//上
                 path.AddLine(rect.Left + rect.Width / , rect.Y - , rect.Left + rect.Width /  + , rect.Y);//上
                 path.AddLine(rect.Left + rect.Width /  + , rect.Y, rect.Right - cornerRadius * , rect.Y);//上
             }
             else
             {
                 path.AddLine(rect.X + cornerRadius, rect.Y, rect.Right - cornerRadius * , rect.Y);//上
             }
             #endregion
             path.AddArc(rect.X + rect.Width - cornerRadius * , rect.Y, cornerRadius * , cornerRadius * , , );//右上角
             #region 右边
             if (location == AnchorTipsLocation.LEFT)
             {
                 path.AddLine(rect.Right, rect.Y + cornerRadius * , rect.Right, rect.Y + rect.Height /  - );//右
                 path.AddLine(rect.Right, rect.Y + rect.Height /  - , rect.Right + , rect.Y + rect.Height / );//右
                 path.AddLine(rect.Right + , rect.Y + rect.Height / , rect.Right, rect.Y + rect.Height /  + );//右
                 path.AddLine(rect.Right, rect.Y + rect.Height /  + , rect.Right, rect.Y + rect.Height - cornerRadius * );//右
             }
             else
             {
                 path.AddLine(rect.Right, rect.Y + cornerRadius * , rect.Right, rect.Y + rect.Height - cornerRadius * );//右
             }
             #endregion
             path.AddArc(rect.X + rect.Width - cornerRadius * , rect.Y + rect.Height - cornerRadius * , cornerRadius * , cornerRadius * , , );//右下角
             #region 下边
             if (location == AnchorTipsLocation.TOP)
             {
                 path.AddLine(rect.Right - cornerRadius * , rect.Bottom, rect.Left + rect.Width /  + , rect.Bottom);
                 path.AddLine(rect.Left + rect.Width /  + , rect.Bottom, rect.Left + rect.Width / , rect.Bottom + );
                 path.AddLine(rect.Left + rect.Width / , rect.Bottom + , rect.Left + rect.Width /  - , rect.Bottom);
                 path.AddLine(rect.Left + rect.Width /  - , rect.Bottom, rect.X + cornerRadius * , rect.Bottom);
             }
             else
             {
                 path.AddLine(rect.Right - cornerRadius * , rect.Bottom, rect.X + cornerRadius * , rect.Bottom);
             }
             #endregion
             path.AddArc(rect.X, rect.Bottom - cornerRadius * , cornerRadius * , cornerRadius * , , );//左下角
             #region 左边
             if (location == AnchorTipsLocation.RIGHT)
             {
                 path.AddLine(rect.Left, rect.Y + cornerRadius * , rect.Left, rect.Y + rect.Height /  - );//左
                 path.AddLine(rect.Left, rect.Y + rect.Height /  - , rect.Left - , rect.Y + rect.Height / );//左
                 path.AddLine(rect.Left - , rect.Y + rect.Height / , rect.Left, rect.Y + rect.Height /  + );//左
                 path.AddLine(rect.Left, rect.Y + rect.Height /  + , rect.Left, rect.Y + rect.Height - cornerRadius * );//左
             }
             else
             {
                 path.AddLine(rect.X, rect.Bottom - cornerRadius * , rect.X, rect.Y + cornerRadius * );//左
             }
             #endregion
             path.CloseFigure();
             #endregion

             Bitmap bit = new Bitmap(formSize.Width, formSize.Height);
             this.Size = formSize;

             #region 画图    English:Drawing
             Graphics gBit = Graphics.FromImage(bit);
             gBit.SetGDIHigh();
             gBit.FillPath(new SolidBrush(_background), path);
             gBit.DrawString(strMsg, _font, new SolidBrush(_foreColor), rect.Location + new Size(, ));
             gBit.Dispose();
             #endregion

             SetBits(bit);
             if (autoCloseTime > )
             {
                 Timer t = new Timer();
                 t.Interval = autoCloseTime;
                 t.Tick += (a, b) =>
                 {
                     this.Close();
                 };
                 t.Enabled = true;
             }
         }
         #endregion

再来2个静态函数以供调用

  #region 显示一个提示    English:Show a hint
         /// <summary>
         /// 功能描述:显示一个提示    English:Show a hint
         /// 作　　者:HZH
         /// 创建日期:2019-08-29 15:28:58
         /// 任务编号:
         /// </summary>
         /// <param name="parentControl">停靠控件</param>
         /// <param name="strMsg">消息</param>
         /// <param name="location">显示方位</param>
         /// <param name="background">背景色</param>
         /// <param name="foreColor">文字颜色</param>
         /// <param name="deviation">偏移量</param>
         /// <param name="fontSize">文字大小</param>
         /// <param name="autoCloseTime">自动关闭时间，当<=0时不自动关闭</param>
         public static FrmAnchorTips ShowTips(
             Control parentControl,
             string strMsg,
             AnchorTipsLocation location = AnchorTipsLocation.RIGHT,
             Color? background = null,
             Color? foreColor = null,
             Size? deviation = null,
             int fontSize = ,
             int autoCloseTime = )
         {
             Point p;
             if (parentControl is Form)
             {
                 p = parentControl.Location;
             }
             else
             {
                 p = parentControl.Parent.PointToScreen(parentControl.Location);
             }
             if (deviation != null)
             {
                 p = p + deviation.Value;
             }
             return ShowTips(parentControl.FindForm(), new Rectangle(p, parentControl.Size), strMsg, location, background, foreColor, fontSize, autoCloseTime);
         }
         #endregion

         #region 显示一个提示    English:Show a hint
         /// <summary>
         /// 功能描述:显示一个提示    English:Show a hint
         /// 作　　者:HZH
         /// 创建日期:2019-08-29 15:29:07
         /// 任务编号:
         /// </summary>
         /// <param name="parentForm">父窗体</param>
         /// <param name="rectControl">停靠区域</param>
         /// <param name="strMsg">消息</param>
         /// <param name="location">显示方位</param>
         /// <param name="background">背景色</param>
         /// <param name="foreColor">文字颜色</param>
         /// <param name="fontSize">文字大小</param>
         /// <param name="autoCloseTime">自动关闭时间，当<=0时不自动关闭</param>
         /// <returns>返回值</returns>
         public static FrmAnchorTips ShowTips(
             Form parentForm,
             Rectangle rectControl,
             string strMsg,
             AnchorTipsLocation location = AnchorTipsLocation.RIGHT,
             Color? background = null,
             Color? foreColor = null,
             int fontSize = ,
             int autoCloseTime = )
         {
             FrmAnchorTips frm = new FrmAnchorTips(rectControl, strMsg, location, background, foreColor, fontSize, autoCloseTime);
             frm.TopMost = true;
             frm.Show(parentForm);
             return frm;
         }
         #endregion

全部代码

 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Data;
 using System.Drawing;
 using System.Drawing.Drawing2D;
 using System.Linq;
 using System.Runtime.InteropServices;
 using System.Text;
 using System.Windows.Forms;

 namespace HZH_Controls.Forms
 {
     public partial class FrmAnchorTips : Form
     {
         bool haveHandle = false;
         #region 构造函数    English:Constructor
         /// <summary>
         /// 功能描述:构造函数    English:Constructor
         /// 作　　者:HZH
         /// 创建日期:2019-08-29 15:27:51
         /// 任务编号:
         /// </summary>
         /// <param name="rectControl">停靠区域</param>
         /// <param name="strMsg">消息</param>
         /// <param name="location">显示方位</param>
         /// <param name="background">背景色</param>
         /// <param name="foreColor">文字颜色</param>
         /// <param name="fontSize">文字大小</param>
         /// <param name="autoCloseTime">自动关闭时间，当<=0时不自动关闭</param>
         private FrmAnchorTips(
             Rectangle rectControl,
             string strMsg,
             AnchorTipsLocation location = AnchorTipsLocation.RIGHT,
             Color? background = null,
             Color? foreColor = null,
             int fontSize = ,
             int autoCloseTime = )
         {
             InitializeComponent();
             Graphics g = this.CreateGraphics();
             Font _font = new Font("微软雅黑", fontSize);
             Color _background = background == null ? Color.FromArgb(, , ) : background.Value;
             Color _foreColor = foreColor == null ? Color.White : foreColor.Value;
             System.Drawing.SizeF sizeText = g.MeasureString(strMsg, _font);
             g.Dispose();
             var formSize = new Size((int)sizeText.Width + , (int)sizeText.Height + );
             if (formSize.Width < )
                 formSize.Width = ;
             if (formSize.Height < )
                 formSize.Height = ;
             if (location == AnchorTipsLocation.LEFT || location == AnchorTipsLocation.RIGHT)
             {
                 formSize.Width += ;
             }
             else
             {
                 formSize.Height += ;
             }          

             #region 获取窗体path    English:Get the form path
             GraphicsPath path = new GraphicsPath();
             Rectangle rect;
             switch (location)
             {
                 case AnchorTipsLocation.TOP:
                     rect = new Rectangle(, , formSize.Width - , formSize.Height -  - );
                     this.Location = new Point(rectControl.X + (rectControl.Width - rect.Width) / , rectControl.Y - rect.Height - );
                     break;
                 case AnchorTipsLocation.RIGHT:
                     rect = new Rectangle(, , formSize.Width -  - , formSize.Height - );
                     this.Location = new Point(rectControl.Right, rectControl.Y + (rectControl.Height - rect.Height) / );
                     break;
                 case AnchorTipsLocation.BOTTOM:
                     rect = new Rectangle(, , formSize.Width - , formSize.Height -  - );
                     this.Location = new Point(rectControl.X + (rectControl.Width - rect.Width) / , rectControl.Bottom);
                     break;
                 default:
                     rect = new Rectangle(, , formSize.Width -  - , formSize.Height - );
                     this.Location = new Point(rectControl.X - rect.Width - , rectControl.Y + (rectControl.Height - rect.Height) / );
                     break;
             }
             int cornerRadius = ;

             path.AddArc(rect.X, rect.Y, cornerRadius * , cornerRadius * , , );//左上角
             #region 上边
             if (location == AnchorTipsLocation.BOTTOM)
             {
                 path.AddLine(rect.X + cornerRadius, rect.Y, rect.Left + rect.Width /  - , rect.Y);//上
                 path.AddLine(rect.Left + rect.Width /  - , rect.Y, rect.Left + rect.Width / , rect.Y - );//上
                 path.AddLine(rect.Left + rect.Width / , rect.Y - , rect.Left + rect.Width /  + , rect.Y);//上
                 path.AddLine(rect.Left + rect.Width /  + , rect.Y, rect.Right - cornerRadius * , rect.Y);//上
             }
             else
             {
                 path.AddLine(rect.X + cornerRadius, rect.Y, rect.Right - cornerRadius * , rect.Y);//上
             }
             #endregion
             path.AddArc(rect.X + rect.Width - cornerRadius * , rect.Y, cornerRadius * , cornerRadius * , , );//右上角
             #region 右边
             if (location == AnchorTipsLocation.LEFT)
             {
                 path.AddLine(rect.Right, rect.Y + cornerRadius * , rect.Right, rect.Y + rect.Height /  - );//右
                 path.AddLine(rect.Right, rect.Y + rect.Height /  - , rect.Right + , rect.Y + rect.Height / );//右
                 path.AddLine(rect.Right + , rect.Y + rect.Height / , rect.Right, rect.Y + rect.Height /  + );//右
                 path.AddLine(rect.Right, rect.Y + rect.Height /  + , rect.Right, rect.Y + rect.Height - cornerRadius * );//右
             }
             else
             {
                 path.AddLine(rect.Right, rect.Y + cornerRadius * , rect.Right, rect.Y + rect.Height - cornerRadius * );//右
             }
             #endregion
             path.AddArc(rect.X + rect.Width - cornerRadius * , rect.Y + rect.Height - cornerRadius * , cornerRadius * , cornerRadius * , , );//右下角
             #region 下边
             if (location == AnchorTipsLocation.TOP)
             {
                 path.AddLine(rect.Right - cornerRadius * , rect.Bottom, rect.Left + rect.Width /  + , rect.Bottom);
                 path.AddLine(rect.Left + rect.Width /  + , rect.Bottom, rect.Left + rect.Width / , rect.Bottom + );
                 path.AddLine(rect.Left + rect.Width / , rect.Bottom + , rect.Left + rect.Width /  - , rect.Bottom);
                 path.AddLine(rect.Left + rect.Width /  - , rect.Bottom, rect.X + cornerRadius * , rect.Bottom);
             }
             else
             {
                 path.AddLine(rect.Right - cornerRadius * , rect.Bottom, rect.X + cornerRadius * , rect.Bottom);
             }
             #endregion
             path.AddArc(rect.X, rect.Bottom - cornerRadius * , cornerRadius * , cornerRadius * , , );//左下角
             #region 左边
             if (location == AnchorTipsLocation.RIGHT)
             {
                 path.AddLine(rect.Left, rect.Y + cornerRadius * , rect.Left, rect.Y + rect.Height /  - );//左
                 path.AddLine(rect.Left, rect.Y + rect.Height /  - , rect.Left - , rect.Y + rect.Height / );//左
                 path.AddLine(rect.Left - , rect.Y + rect.Height / , rect.Left, rect.Y + rect.Height /  + );//左
                 path.AddLine(rect.Left, rect.Y + rect.Height /  + , rect.Left, rect.Y + rect.Height - cornerRadius * );//左
             }
             else
             {
                 path.AddLine(rect.X, rect.Bottom - cornerRadius * , rect.X, rect.Y + cornerRadius * );//左
             }
             #endregion
             path.CloseFigure();
             #endregion

             Bitmap bit = new Bitmap(formSize.Width, formSize.Height);
             this.Size = formSize;

             #region 画图    English:Drawing
             Graphics gBit = Graphics.FromImage(bit);
             gBit.SetGDIHigh();
             gBit.FillPath(new SolidBrush(_background), path);
             gBit.DrawString(strMsg, _font, new SolidBrush(_foreColor), rect.Location + new Size(, ));
             gBit.Dispose();
             #endregion

             SetBits(bit);
             if (autoCloseTime > )
             {
                 Timer t = new Timer();
                 t.Interval = autoCloseTime;
                 t.Tick += (a, b) =>
                 {
                     this.Close();
                 };
                 t.Enabled = true;
             }
         }
         #endregion

         #region 显示一个提示    English:Show a hint
         /// <summary>
         /// 功能描述:显示一个提示    English:Show a hint
         /// 作　　者:HZH
         /// 创建日期:2019-08-29 15:28:58
         /// 任务编号:
         /// </summary>
         /// <param name="parentControl">停靠控件</param>
         /// <param name="strMsg">消息</param>
         /// <param name="location">显示方位</param>
         /// <param name="background">背景色</param>
         /// <param name="foreColor">文字颜色</param>
         /// <param name="deviation">偏移量</param>
         /// <param name="fontSize">文字大小</param>
         /// <param name="autoCloseTime">自动关闭时间，当<=0时不自动关闭</param>
         public static FrmAnchorTips ShowTips(
             Control parentControl,
             string strMsg,
             AnchorTipsLocation location = AnchorTipsLocation.RIGHT,
             Color? background = null,
             Color? foreColor = null,
             Size? deviation = null,
             int fontSize = ,
             int autoCloseTime = )
         {
             Point p;
             if (parentControl is Form)
             {
                 p = parentControl.Location;
             }
             else
             {
                 p = parentControl.Parent.PointToScreen(parentControl.Location);
             }
             if (deviation != null)
             {
                 p = p + deviation.Value;
             }
             return ShowTips(parentControl.FindForm(), new Rectangle(p, parentControl.Size), strMsg, location, background, foreColor, fontSize, autoCloseTime);
         }
         #endregion

         #region 显示一个提示    English:Show a hint
         /// <summary>
         /// 功能描述:显示一个提示    English:Show a hint
         /// 作　　者:HZH
         /// 创建日期:2019-08-29 15:29:07
         /// 任务编号:
         /// </summary>
         /// <param name="parentForm">父窗体</param>
         /// <param name="rectControl">停靠区域</param>
         /// <param name="strMsg">消息</param>
         /// <param name="location">显示方位</param>
         /// <param name="background">背景色</param>
         /// <param name="foreColor">文字颜色</param>
         /// <param name="fontSize">文字大小</param>
         /// <param name="autoCloseTime">自动关闭时间，当<=0时不自动关闭</param>
         /// <returns>返回值</returns>
         public static FrmAnchorTips ShowTips(
             Form parentForm,
             Rectangle rectControl,
             string strMsg,
             AnchorTipsLocation location = AnchorTipsLocation.RIGHT,
             Color? background = null,
             Color? foreColor = null,
             int fontSize = ,
             int autoCloseTime = )
         {
             FrmAnchorTips frm = new FrmAnchorTips(rectControl, strMsg, location, background, foreColor, fontSize, autoCloseTime);
             frm.TopMost = true;
             frm.Show(parentForm);
             return frm;
         }
         #endregion

         #region Override

         protected override void OnClosing(CancelEventArgs e)
         {
             e.Cancel = true;
             base.OnClosing(e);
             haveHandle = false;
             this.Dispose();
         }

         protected override void OnHandleCreated(EventArgs e)
         {
             InitializeStyles();
             base.OnHandleCreated(e);
             haveHandle = true;
         }

         protected override CreateParams CreateParams
         {
             get
             {
                 CreateParams cParms = base.CreateParams;
                 cParms.ExStyle |= 0x00080000; // WS_EX_LAYERED
                 return cParms;
             }
         }

         #endregion

         private void InitializeStyles()
         {
             SetStyle(ControlStyles.AllPaintingInWmPaint, true);
             SetStyle(ControlStyles.UserPaint, true);
             UpdateStyles();
         }

         #region 根据图片显示窗体    English:Display Forms Based on Pictures
         /// <summary>
         /// 功能描述:根据图片显示窗体    English:Display Forms Based on Pictures
         /// 作　　者:HZH
         /// 创建日期:2019-08-29 15:31:16
         /// 任务编号:
         /// </summary>
         /// <param name="bitmap">bitmap</param>
         private void SetBits(Bitmap bitmap)
         {
             if (!haveHandle) return;

             if (!Bitmap.IsCanonicalPixelFormat(bitmap.PixelFormat) || !Bitmap.IsAlphaPixelFormat(bitmap.PixelFormat))
                 throw new ApplicationException("The picture must be 32bit picture with alpha channel.");

             IntPtr oldBits = IntPtr.Zero;
             IntPtr screenDC = Win32.GetDC(IntPtr.Zero);
             IntPtr hBitmap = IntPtr.Zero;
             IntPtr memDc = Win32.CreateCompatibleDC(screenDC);

             try
             {
                 Win32.Point topLoc = new Win32.Point(Left, Top);
                 Win32.Size bitMapSize = new Win32.Size(bitmap.Width, bitmap.Height);
                 Win32.BLENDFUNCTION blendFunc = new Win32.BLENDFUNCTION();
                 Win32.Point srcLoc = new Win32.Point(, );

                 hBitmap = bitmap.GetHbitmap(Color.FromArgb());
                 oldBits = Win32.SelectObject(memDc, hBitmap);

                 blendFunc.BlendOp = Win32.AC_SRC_OVER;
                 blendFunc.SourceConstantAlpha = ;
                 blendFunc.AlphaFormat = Win32.AC_SRC_ALPHA;
                 blendFunc.BlendFlags = ;

                 Win32.UpdateLayeredWindow(Handle, screenDC, ref topLoc, ref bitMapSize, memDc, ref srcLoc, , ref blendFunc, Win32.ULW_ALPHA);
             }
             finally
             {
                 if (hBitmap != IntPtr.Zero)
                 {
                     Win32.SelectObject(memDc, oldBits);
                     Win32.DeleteObject(hBitmap);
                 }
                 Win32.ReleaseDC(IntPtr.Zero, screenDC);
                 Win32.DeleteDC(memDc);
             }
         }
         #endregion
     }

     public enum AnchorTipsLocation
     {
         LEFT,
         TOP,
         RIGHT,
         BOTTOM
     }

     class Win32
     {
         [StructLayout(LayoutKind.Sequential)]
         public struct Size
         {
             public Int32 cx;
             public Int32 cy;

             public Size(Int32 x, Int32 y)
             {
                 cx = x;
                 cy = y;
             }
         }

         [StructLayout(LayoutKind.Sequential, Pack = )]
         public struct BLENDFUNCTION
         {
             public byte BlendOp;
             public byte BlendFlags;
             public byte SourceConstantAlpha;
             public byte AlphaFormat;
         }

         [StructLayout(LayoutKind.Sequential)]
         public struct Point
         {
             public Int32 x;
             public Int32 y;

             public Point(Int32 x, Int32 y)
             {
                 this.x = x;
                 this.y = y;
             }
         }

         public const byte AC_SRC_OVER = ;
         public const Int32 ULW_ALPHA = ;
         public const byte AC_SRC_ALPHA = ;

         [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
         public static extern IntPtr CreateCompatibleDC(IntPtr hDC);

         [DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]
         public static extern IntPtr GetDC(IntPtr hWnd);

         [DllImport("gdi32.dll", ExactSpelling = true)]
         public static extern IntPtr SelectObject(IntPtr hDC, IntPtr hObj);

         [DllImport("user32.dll", ExactSpelling = true)]
         public static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);

         [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
         public static extern int DeleteDC(IntPtr hDC);

         [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
         public static extern int DeleteObject(IntPtr hObj);

         [DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]
         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);

         [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
         public static extern IntPtr ExtCreateRegion(IntPtr lpXform, uint nCount, IntPtr rgnData);
     }
 }

 namespace HZH_Controls.Forms
 {
     partial class FrmAnchorTips
     {
         /// <summary>
         /// Required designer variable.
         /// </summary>
         private System.ComponentModel.IContainer components = null;

         /// <summary>
         /// Clean up any resources being used.
         /// </summary>
         /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
         protected override void Dispose(bool disposing)
         {
             if (disposing && (components != null))
             {
                 components.Dispose();
             }
             base.Dispose(disposing);
         }

         #region Windows Form Designer generated code

         /// <summary>
         /// Required method for Designer support - do not modify
         /// the contents of this method with the code editor.
         /// </summary>
         private void InitializeComponent()
         {
             this.SuspendLayout();
             //
             // FrmAnchorTips
             //
             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
             this.ClientSize = new System.Drawing.Size(, );
             this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
             this.Name = "FrmAnchorTips";
             this.StartPosition = System.Windows.Forms.FormStartPosition.Manual;
             this.Text = "FrmAnchorTips";
             this.ResumeLayout(false);

         }

         #endregion
     }
 }

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