' 导入命名空间
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms

public class CustomLineCapLine
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class

public class Form1
  Inherits System.Windows.Forms.Form

  Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)

        Dim pts() As Point = { _
            New Point(0, 0), _
            New Point(2, 2), _
            New Point(0, 0), _
            New Point(2, -2) _
        }

        Dim cap_path As New GraphicsPath
        cap_path.AddLines(pts)

        ' Make the CustomLineCap.
        Dim x_cap As New CustomLineCap(Nothing, cap_path)

        ' Draw some lines with x_cap.
        Dim the_pen As New Pen(Color.Black, 1)
        the_pen.CustomStartCap = x_cap
        the_pen.CustomEndCap = x_cap

        the_pen.Width = 20
        e.Graphics.DrawLine(the_pen, 50, 200, 200, 200)

  End Sub

  Public Sub New()
   
    MyBase.New()
    Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
    Me.ClientSize = New System.Drawing.Size(292, 273)
    Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen

  End Sub

End Class