（五十一）c#Winform自定义控件-文字提示
作者：互联网
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
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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
1 HZH_Controls.Forms.FrmAnchorTips.ShowTips(button1, "测试提示信息\nLEFT", AnchorTipsLocation.LEFT); 2 HZH_Controls.Forms.FrmAnchorTips.ShowTips(button1, "测试提示信息\nRIGHT", AnchorTipsLocation.RIGHT); 3 HZH_Controls.Forms.FrmAnchorTips.ShowTips(button1, "测试提示信息\nTOP", AnchorTipsLocation.TOP); 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
1 #region Override
2
3 protected override void OnClosing(CancelEventArgs e)
4 {
5 e.Cancel = true;
6 base.OnClosing(e);
7 haveHandle = false;
8 this.Dispose();
9 }
10
11 protected override void OnHandleCreated(EventArgs e)
12 {
13 InitializeStyles();
14 base.OnHandleCreated(e);
15 haveHandle = true;
16 }
17
18 protected override CreateParams CreateParams
19 {
20 get
21 {
22 CreateParams cParms = base.CreateParams;
23 cParms.ExStyle |= 0x00080000; // WS_EX_LAYERED
24 return cParms;
25 }
26 }
27
28 #endregion
1 private void InitializeStyles()
2 {
3 SetStyle(ControlStyles.AllPaintingInWmPaint, true);
4 SetStyle(ControlStyles.UserPaint, true);
5 UpdateStyles();
6 }
根据图片显示窗体，这个是网上copy的
1 #region 根据图片显示窗体 English:Display Forms Based on Pictures
2 /// <summary>
3 /// 功能描述:根据图片显示窗体 English:Display Forms Based on Pictures
4 /// 作 者:HZH
5 /// 创建日期:2019-08-29 15:31:16
6 /// 任务编号:
7 /// </summary>
8 /// <param name="bitmap">bitmap</param>
9 private void SetBits(Bitmap bitmap)
10 {
11 if (!haveHandle) return;
12
13 if (!Bitmap.IsCanonicalPixelFormat(bitmap.PixelFormat) || !Bitmap.IsAlphaPixelFormat(bitmap.PixelFormat))
14 throw new ApplicationException("The picture must be 32bit picture with alpha channel.");
15
16 IntPtr oldBits = IntPtr.Zero;
17 IntPtr screenDC = Win32.GetDC(IntPtr.Zero);
18 IntPtr hBitmap = IntPtr.Zero;
19 IntPtr memDc = Win32.CreateCompatibleDC(screenDC);
20
21 try
22 {
23 Win32.Point topLoc = new Win32.Point(Left, Top);
24 Win32.Size bitMapSize = new Win32.Size(bitmap.Width, bitmap.Height);
25 Win32.BLENDFUNCTION blendFunc = new Win32.BLENDFUNCTION();
26 Win32.Point srcLoc = new Win32.Point(0, 0);
27
28 hBitmap = bitmap.GetHbitmap(Color.FromArgb(0));
29 oldBits = Win32.SelectObject(memDc, hBitmap);
30
31 blendFunc.BlendOp = Win32.AC_SRC_OVER;
32 blendFunc.SourceConstantAlpha = 255;
33 blendFunc.AlphaFormat = Win32.AC_SRC_ALPHA;
34 blendFunc.BlendFlags = 0;
35
36 Win32.UpdateLayeredWindow(Handle, screenDC, ref topLoc, ref bitMapSize, memDc, ref srcLoc, 0, ref blendFunc, Win32.ULW_ALPHA);
37 }
38 finally
39 {
40 if (hBitmap != IntPtr.Zero)
41 {
42 Win32.SelectObject(memDc, oldBits);
43 Win32.DeleteObject(hBitmap);
44 }
45 Win32.ReleaseDC(IntPtr.Zero, screenDC);
46 Win32.DeleteDC(memDc);
47 }
48 }
49 #endregion
然后是win32类
1 class Win32
2 {
3 [StructLayout(LayoutKind.Sequential)]
4 public struct Size
5 {
6 public Int32 cx;
7 public Int32 cy;
8
9 public Size(Int32 x, Int32 y)
10 {
11 cx = x;
12 cy = y;
13 }
14 }
15
16 [StructLayout(LayoutKind.Sequential, Pack = 1)]
17 public struct BLENDFUNCTION
18 {
19 public byte BlendOp;
20 public byte BlendFlags;
21 public byte SourceConstantAlpha;
22 public byte AlphaFormat;
23 }
24
25 [StructLayout(LayoutKind.Sequential)]
26 public struct Point
27 {
28 public Int32 x;
29 public Int32 y;
30
31 public Point(Int32 x, Int32 y)
32 {
33 this.x = x;
34 this.y = y;
35 }
36 }
37
38 public const byte AC_SRC_OVER = 0;
39 public const Int32 ULW_ALPHA = 2;
40 public const byte AC_SRC_ALPHA = 1;
41
42 [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
43 public static extern IntPtr CreateCompatibleDC(IntPtr hDC);
44
45 [DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]
46 public static extern IntPtr GetDC(IntPtr hWnd);
47
48 [DllImport("gdi32.dll", ExactSpelling = true)]
49 public static extern IntPtr SelectObject(IntPtr hDC, IntPtr hObj);
50
51 [DllImport("user32.dll", ExactSpelling = true)]
52 public static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);
53
54 [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
55 public static extern int DeleteDC(IntPtr hDC);
56
57 [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
58 public static extern int DeleteObject(IntPtr hObj);
59
60 [DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]
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
63 [DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
64 public static extern IntPtr ExtCreateRegion(IntPtr lpXform, uint nCount, IntPtr rgnData);
65 }
然后就是构造函数了，根据传入参数，画出图片并设置窗体
1 #region 构造函数 English:Constructor
2 /// <summary>
3 /// 功能描述:构造函数 English:Constructor
4 /// 作 者:HZH
5 /// 创建日期:2019-08-29 15:27:51
6 /// 任务编号:
7 /// </summary>
8 /// <param name="rectControl">停靠区域</param>
9 /// <param name="strMsg">消息</param>
10 /// <param name="location">显示方位</param>
11 /// <param name="background">背景色</param>
12 /// <param name="foreColor">文字颜色</param>
13 /// <param name="fontSize">文字大小</param>
14 /// <param name="autoCloseTime">自动关闭时间，当<=0时不自动关闭</param>
15 private FrmAnchorTips(
16 Rectangle rectControl,
17 string strMsg,
18 AnchorTipsLocation location = AnchorTipsLocation.RIGHT,
19 Color? background = null,
20 Color? foreColor = null,
21 int fontSize = 10,
22 int autoCloseTime = 5000)
23 {
24 InitializeComponent();
25 Graphics g = this.CreateGraphics();
26 Font _font = new Font("微软雅黑", fontSize);
27 Color _background = background == null ? Color.FromArgb(255, 77, 58) : background.Value;
28 Color _foreColor = foreColor == null ? Color.White : foreColor.Value;
29 System.Drawing.SizeF sizeText = g.MeasureString(strMsg, _font);
30 g.Dispose();
31 var formSize = new Size((int)sizeText.Width + 20, (int)sizeText.Height + 20);
32 if (formSize.Width < 20)
33 formSize.Width = 20;
34 if (formSize.Height < 20)
35 formSize.Height = 20;
36 if (location == AnchorTipsLocation.LEFT || location == AnchorTipsLocation.RIGHT)
37 {
38 formSize.Width += 20;
39 }
40 else
41 {
42 formSize.Height += 20;
43 }
44
45 #region 获取窗体path English:Get the form path
46 GraphicsPath path = new GraphicsPath();
47 Rectangle rect;
48 switch (location)
49 {
50 case AnchorTipsLocation.TOP:
51 rect = new Rectangle(1, 1, formSize.Width - 2, formSize.Height - 20 - 1);
52 this.Location = new Point(rectControl.X + (rectControl.Width - rect.Width) / 2, rectControl.Y - rect.Height - 20);
53 break;
54 case AnchorTipsLocation.RIGHT:
55 rect = new Rectangle(20, 1, formSize.Width - 20 - 1, formSize.Height - 2);
56 this.Location = new Point(rectControl.Right, rectControl.Y + (rectControl.Height - rect.Height) / 2);
57 break;
58 case AnchorTipsLocation.BOTTOM:
59 rect = new Rectangle(1, 20, formSize.Width - 2, formSize.Height - 20 - 1);
60 this.Location = new Point(rectControl.X + (rectControl.Width - rect.Width) / 2, rectControl.Bottom);
61 break;
62 default:
63 rect = new Rectangle(1, 1, formSize.Width - 20 - 1, formSize.Height - 2);
64 this.Location = new Point(rectControl.X - rect.Width - 20, rectControl.Y + (rectControl.Height - rect.Height) / 2);
65 break;
66 }
67 int cornerRadius = 2;
68
69 path.AddArc(rect.X, rect.Y, cornerRadius * 2, cornerRadius * 2, 180, 90);//左上角
70 #region 上边
71 if (location == AnchorTipsLocation.BOTTOM)
72 {
73 path.AddLine(rect.X + cornerRadius, rect.Y, rect.Left + rect.Width / 2 - 10, rect.Y);//上
74 path.AddLine(rect.Left + rect.Width / 2 - 10, rect.Y, rect.Left + rect.Width / 2, rect.Y - 19);//上
75 path.AddLine(rect.Left + rect.Width / 2, rect.Y - 19, rect.Left + rect.Width / 2 + 10, rect.Y);//上
76 path.AddLine(rect.Left + rect.Width / 2 + 10, rect.Y, rect.Right - cornerRadius * 2, rect.Y);//上
77 }
78 else
79 {
80 path.AddLine(rect.X + cornerRadius, rect.Y, rect.Right - cornerRadius * 2, rect.Y);//上
81 }
82 #endregion
83 path.AddArc(rect.X + rect.Width - cornerRadius * 2, rect.Y, cornerRadius * 2, cornerRadius * 2, 270, 90);//右上角
84 #region 右边
85 if (location == AnchorTipsLocation.LEFT)
86 {
87 path.AddLine(rect.Right, rect.Y + cornerRadius * 2, rect.Right, rect.Y + rect.Height / 2 - 10);//右
88 path.AddLine(rect.Right, rect.Y + rect.Height / 2 - 10, rect.Right + 19, rect.Y + rect.Height / 2);//右
89 path.AddLine(rect.Right + 19, rect.Y + rect.Height / 2, rect.Right, rect.Y + rect.Height / 2 + 10);//右
90 path.AddLine(rect.Right, rect.Y + rect.Height / 2 + 10, rect.Right, rect.Y + rect.Height - cornerRadius * 2);//右
91 }
92 else
93 {
94 path.AddLine(rect.Right, rect.Y + cornerRadius * 2, rect.Right, rect.Y + rect.Height - cornerRadius * 2);//右
95 }
96 #endregion
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 #region 下边
99 if (location == AnchorTipsLocation.TOP)
100 {
101 path.AddLine(rect.Right - cornerRadius * 2, rect.Bottom, rect.Left + rect.Width / 2 + 10, rect.Bottom);
102 path.AddLine(rect.Left + rect.Width / 2 + 10, rect.Bottom, rect.Left + rect.Width / 2, rect.Bottom + 19);
103 path.AddLine(rect.Left + rect.Width / 2, rect.Bottom + 19, rect.Left + rect.Width / 2 - 10, rect.Bottom);
104 path.AddLine(rect.Left + rect.Width / 2 - 10, rect.Bottom, rect.X + cornerRadius * 2, rect.Bottom);
105 }
106 else
107 {
108 path.AddLine(rect.Right - cornerRadius * 2, rect.Bottom, rect.X + cornerRadius * 2, rect.Bottom);
109 }
110 #endregion
111 path.AddArc(rect.X, rect.Bottom - cornerRadius * 2, cornerRadius * 2, cornerRadius * 2, 90, 90);//左下角
112 #region 左边
113 if (location == AnchorTipsLocation.RIGHT)
114 {
115 path.AddLine(rect.Left, rect.Y + cornerRadius * 2, rect.Left, rect.Y + rect.Height / 2 - 10);//左
116 path.AddLine(rect.Left, rect.Y + rect.Height / 2 - 10, rect.Left - 19, rect.Y + rect.Height / 2);//左
117 path.AddLine(rect.Left - 19, rect.Y + rect.Height / 2, rect.Left, rect.Y + rect.Height / 2 + 10);//左
118 path.AddLine(rect.Left, rect.Y + rect.Height / 2 + 10, rect.Left, rect.Y + rect.Height - cornerRadius * 2);//左
119 }
120 else
121 {
122 path.AddLine(rect.X, rect.Bottom - cornerRadius * 2, rect.X, rect.Y + cornerRadius * 2);//左
123 }
124 #endregion
125 path.CloseFigure();
126 #endregion
127
128 Bitmap bit = new Bitmap(formSize.Width, formSize.Height);
129 this.Size = formSize;
130
131 #region 画图 English:Drawing
132 Graphics gBit = Graphics.FromImage(bit);
133 gBit.SetGDIHigh();
134 gBit.FillPath(new SolidBrush(_background), path);
135 gBit.DrawString(strMsg, _font, new SolidBrush(_foreColor), rect.Location + new Size(10, 10));
136 gBit.Dispose();
137 #endregion
138
139 SetBits(bit);
140 if (autoCloseTime > 0)
141 {
142 Timer t = new Timer();
143 t.Interval = autoCloseTime;
144 t.Tick += (a, b) =>
145 {
146 this.Close();
147 };
148 t.Enabled = true;
149 }
150 }
151 #endregion
再来2个静态函数以供调用
1 #region 显示一个提示 English:Show a hint
2 /// <summary>
3 /// 功能描述:显示一个提示 English:Show a hint
4 /// 作 者:HZH
5 /// 创建日期:2019-08-29 15:28:58
6 /// 任务编号:
7 /// </summary>
8 /// <param name="parentControl">停靠控件</param>
9 /// <param name="strMsg">消息</param>
10 /// <param name="location">显示方位</param>
11 /// <param name="background">背景色</param>
12 /// <param name="foreColor">文字颜色</param>
13 /// <param name="deviation">偏移量</param>
14 /// <param name="fontSize">文字大小</param>
15 /// <param name="autoCloseTime">自动关闭时间，当<=0时不自动关闭</param>
16 public static FrmAnchorTips ShowTips(
17 Control parentControl,
18 string strMsg,
19 AnchorTipsLocation location = AnchorTipsLocation.RIGHT,
20 Color? background = null,
21 Color? foreColor = null,
22 Size? deviation = null,
23 int fontSize = 10,
24 int autoCloseTime = 5000)
25 {
26 Point p;
27 if (parentControl is Form)
28 {
29 p = parentControl.Location;
30 }
31 else
32 {
33 p = parentControl.Parent.PointToScreen(parentControl.Location);
34 }
35 if (deviation != null)
36 {
37 p = p + deviation.Value;
38 }
39 return ShowTips(parentControl.FindForm(), new Rectangle(p, parentControl.Size), strMsg, location, background, foreColor, fontSize, autoCloseTime);
40 }
41 #endregion
42
43 #region 显示一个提示 English:Show a hint
44 /// <summary>
45 /// 功能描述:显示一个提示 English:Show a hint
46 /// 作 者:HZH
47 /// 创建日期:2019-08-29 15:29:07
48 /// 任务编号:
49 /// </summary>
50 /// <param name="parentForm">父窗体</param>
51 /// <param name="rectControl">停靠区域</param>
52 /// <param name="strMsg">消息</param>
53 /// <param name="location">显示方位</param>
54 /// <param name="background">背景色</param>
55 /// <param name="foreColor">文字颜色</param>
56 /// <param name="fontSize">文字大小</param>
57 /// <param name="autoCloseTime">自动关闭时间，当<=0时不自动关闭</param>
58 /// <returns>返回值</returns>
59 public static FrmAnchorTips ShowTips(
60 Form parentForm,
61 Rectangle rectControl,
62 string strMsg,
63 AnchorTipsLocation location = AnchorTipsLocation.RIGHT,
64 Color? background = null,
65 Color? foreColor = null,
66 int fontSize = 10,
67 int autoCloseTime = 5000)
68 {
69 FrmAnchorTips frm = new FrmAnchorTips(rectControl, strMsg, location, background, foreColor, fontSize, autoCloseTime);
70 frm.TopMost = true;
71 frm.Show(parentForm);
72 return frm;
73 }
74 #endregion
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 }
View Code
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 }
View Code
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标签：控件,自定义,Height,Width,五十一,cornerRadius,path,public,rect 来源： https://www.cnblogs.com/bfyx/p/11430049.html