VB.Net Tutorial/2D Graphics/Custom LineCap

Draw line with Custom Line Cap

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

Make the CustomLineCap

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

Set Pen.CustomStartCap and Pen.CustomEndCap

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