添加项目文件。
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using JinYuan.ControlLib.UCHelper;
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using System;
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using System.ComponentModel;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Windows.Forms;
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namespace JinYuan.ControlLib
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{
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public partial class ControlBase : UserControl
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{
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/// <summary>
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/// The is radius
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/// </summary>
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private bool _isRadius = false;
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/// <summary>
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/// The corner radius
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/// </summary>
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private int _cornerRadius = 24;
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/// <summary>
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/// The is show rect
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/// </summary>
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private bool _isShowRect = false;
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/// <summary>
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/// The rect color
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/// </summary>
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private Color _rectColor = Color.FromArgb(220, 220, 220);
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/// <summary>
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/// The rect width
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/// </summary>
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private int _rectWidth = 1;
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/// <summary>
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/// The fill color
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/// </summary>
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private Color _fillColor = Color.Transparent;
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/// <summary>
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/// 是否圆角
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/// </summary>
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/// <value><c>true</c> if this instance is radius; otherwise, <c>false</c>.</value>
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[Description("是否圆角"), Category("自定义")]
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public virtual bool IsRadius
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{
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get
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{
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return this._isRadius;
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}
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set
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{
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this._isRadius = value;
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Refresh();
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}
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}
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/// <summary>
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/// 圆角角度
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/// </summary>
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/// <value>The coner radius.</value>
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[Description("圆角角度"), Category("自定义")]
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public virtual int ConerRadius
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{
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get
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{
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return this._cornerRadius;
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}
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set
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{
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this._cornerRadius = Math.Max(value, 1);
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Refresh();
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}
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}
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/// <summary>
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/// 是否显示边框
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/// </summary>
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/// <value><c>true</c> if this instance is show rect; otherwise, <c>false</c>.</value>
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[Description("是否显示边框"), Category("自定义")]
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public virtual bool IsShowRect
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{
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get
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{
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return this._isShowRect;
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}
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set
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{
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this._isShowRect = value;
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Refresh();
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}
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}
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/// <summary>
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/// 边框颜色
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/// </summary>
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/// <value>The color of the rect.</value>
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[Description("边框颜色"), Category("自定义")]
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public virtual Color RectColor
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{
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get
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{
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return this._rectColor;
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}
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set
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{
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this._rectColor = value;
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this.Refresh();
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}
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}
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/// <summary>
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/// 边框宽度
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/// </summary>
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/// <value>The width of the rect.</value>
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[Description("边框宽度"), Category("自定义")]
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public virtual int RectWidth
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{
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get
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{
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return this._rectWidth;
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}
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set
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{
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this._rectWidth = value;
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Refresh();
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}
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}
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/// <summary>
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/// 当使用边框时填充颜色，当值为背景色或透明色或空值则不填充
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/// </summary>
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/// <value>The color of the fill.</value>
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[Description("当使用边框时填充颜色，当值为背景色或透明色或空值则不填充"), Category("自定义")]
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public virtual Color FillColor
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{
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get
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{
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return this._fillColor;
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}
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set
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{
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this._fillColor = value;
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Refresh();
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}
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="UCControlBase" /> class.
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/// </summary>
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public ControlBase()
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{
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this.InitializeComponent();
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this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
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this.SetStyle(ControlStyles.DoubleBuffer, true);
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this.SetStyle(ControlStyles.ResizeRedraw, true);
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this.SetStyle(ControlStyles.Selectable, true);
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this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
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this.SetStyle(ControlStyles.UserPaint, true);
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}
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/// <summary>
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/// 引发 <see cref="E:System.Windows.Forms.Control.Paint" /> 事件。
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/// </summary>
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/// <param name="e">包含事件数据的 <see cref="T:System.Windows.Forms.PaintEventArgs" />。</param>
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protected override void OnPaint(PaintEventArgs e)
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{
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if (this.Visible)
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{
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if (this._isRadius)
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{
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this.SetWindowRegion();
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}
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else
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{
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//关闭圆角后显示为原矩形
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GraphicsPath g = new GraphicsPath();
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g.AddRectangle(base.ClientRectangle);
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g.CloseFigure();
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base.Region = new Region(g);
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}
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GraphicsPath graphicsPath = new GraphicsPath();
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if (this._isShowRect || (_fillColor != Color.Empty && _fillColor != Color.Transparent && _fillColor != this.BackColor))
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{
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Rectangle clientRectangle = base.ClientRectangle;
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if (_isRadius)
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{
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graphicsPath.AddArc(0, 0, _cornerRadius, _cornerRadius, 180f, 90f);
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graphicsPath.AddArc(clientRectangle.Width - _cornerRadius - 1, 0, _cornerRadius, _cornerRadius, 270f, 90f);
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graphicsPath.AddArc(clientRectangle.Width - _cornerRadius - 1, clientRectangle.Height - _cornerRadius - 1, _cornerRadius, _cornerRadius, 0f, 90f);
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graphicsPath.AddArc(0, clientRectangle.Height - _cornerRadius - 1, _cornerRadius, _cornerRadius, 90f, 90f);
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graphicsPath.CloseFigure();
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}
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else
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{
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graphicsPath.AddRectangle(clientRectangle);
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}
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}
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e.Graphics.SetGDIHigh();
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if (_fillColor != Color.Empty && _fillColor != Color.Transparent && _fillColor != this.BackColor)
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e.Graphics.FillPath(new SolidBrush(this._fillColor), graphicsPath);
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if (this._isShowRect)
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{
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Color rectColor = this._rectColor;
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Pen pen = new Pen(rectColor, (float)this._rectWidth);
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e.Graphics.DrawPath(pen, graphicsPath);
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}
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}
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base.OnPaint(e);
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}
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/// <summary>
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/// Sets the window region.
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/// </summary>
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private void SetWindowRegion()
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{
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GraphicsPath path = new GraphicsPath();
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Rectangle rect = new Rectangle(-1, -1, base.Width + 1, base.Height);
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path = this.GetRoundedRectPath(rect, this._cornerRadius);
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base.Region = new Region(path);
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}
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/// <summary>
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/// Gets the rounded rect path.
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/// </summary>
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/// <param name="rect">The rect.</param>
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/// <param name="radius">The radius.</param>
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/// <returns>GraphicsPath.</returns>
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private GraphicsPath GetRoundedRectPath(Rectangle rect, int radius)
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{
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Rectangle rect2 = new Rectangle(rect.Location, new Size(radius, radius));
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GraphicsPath graphicsPath = new GraphicsPath();
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graphicsPath.AddArc(rect2, 180f, 90f);//左上角
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rect2.X = rect.Right - radius;
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graphicsPath.AddArc(rect2, 270f, 90f);//右上角
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rect2.Y = rect.Bottom - radius;
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rect2.Width += 1;
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rect2.Height += 1;
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graphicsPath.AddArc(rect2, 360f, 90f);//右下角
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rect2.X = rect.Left;
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graphicsPath.AddArc(rect2, 90f, 90f);//左下角
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graphicsPath.CloseFigure();
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return graphicsPath;
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}
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/// <summary>
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/// WNDs the proc.
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/// </summary>
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/// <param name="m">要处理的 Windows <see cref="T:System.Windows.Forms.Message" />。</param>
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protected override void WndProc(ref Message m)
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{
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if (m.Msg != 20)
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{
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base.WndProc(ref m);
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}
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}
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}
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}
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