CustomLineCap.Clone 方法

定义

命名空间:

System.Drawing.Drawing2D

程序集:

System.Drawing.Common.dll

包:

System.Drawing.Common v9.0.0-preview.6.24327.6

Source:

CustomLineCap.cs

创建此 CustomLineCap的确切副本。

public:
 virtual System::Object ^ Clone();

public object Clone ();

abstract member Clone : unit -> obj
override this.Clone : unit -> obj

Public Function Clone () As Object

返回

Object

此方法创建 CustomLineCap 作为对象强制转换。

实现

Clone()

示例

以下示例旨在与 Windows 窗体一起使用，它需要 PaintEventArgsePaint 事件对象。 该代码执行以下操作：

• 使用 GraphicsPath 对象创建自定义线条上限。

• 使用刚刚创建的 GraphicsPath 对象创建 CustomLineCap 对象 firstCap。

• 使用 Clone 方法创建 firstCap 的克隆。

• 设置 Pen 对象的 CustomStartCap 和 CustomEndCap 属性，并使用该笔将线条和自定义上限绘制到屏幕。

Public Sub CloneExample(e As PaintEventArgs)
 Dim points As Point() = New Point(- 5, - 5) New Point(0, 0) _
 New Point(5, - 5)
 Dim capPath As New GraphicsPath()
 ' Create a Path and add two lines to it,
 ' forming a custom line cap.
 capPath.AddLines(points)
 ' Create a CustomLineCap object.
 Dim firstCap As New CustomLineCap(Nothing, capPath)
 ' Create a copy of firstCap.
 Dim secondCap As CustomLineCap = CType(firstCap.Clone(), _
 CustomLineCap)
 ' Create a Pen object.
 Dim pen As New Pen(Color.Black, 3F)
 'Set up the line.
 Dim point1 As New Point(20, 20)
 Dim point2 As New Point(100, 100)
 ' Set up the caps.
 pen.CustomStartCap = firstCap
 pen.CustomEndCap = secondCap
 ' Draw the line and caps to the screen.
 e.Graphics.DrawLine(pen, point1, point2)
 End Sub

private void CloneExample(PaintEventArgs e)
 {
 // Create a Path and add two lines to it,
 // forming a custom line cap.
 Point[] points =
 {
 new Point(-5, -5),
 new Point(0, 0),
 new Point(5, -5)
 };
 GraphicsPath capPath = new GraphicsPath();
 capPath.AddLines(points);
 // Create a CustomLineCap object.
 CustomLineCap firstCap = new CustomLineCap(null, capPath);
 // Create a copy of firstCap.
 CustomLineCap secondCap = (CustomLineCap)firstCap.Clone();
 // Create a Pen object.
 Pen pen = new Pen(Color.Black, 3.0f);
 // Set up the line.
 Point point1 = new Point(20, 20);
 Point point2 = new Point(100, 100);
 // Set up the caps.
 pen.CustomStartCap = firstCap;
 pen.CustomEndCap = secondCap;
 // Draw the line and caps to the screen.
 e.Graphics.DrawLine(pen, point1, point2);
 }