VB.Net Tutorial/2D Graphics/Pen

Материал из VB Эксперт
Версия от 12:54, 26 мая 2010; Admin (обсуждение | вклад) (1 версия)
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Adjustable RowCap

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class AdjustableRowCap
   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 g As Graphics = Me.CreateGraphics()
        g.Clear(Me.BackColor)
        Dim cap1 As New AdjustableArrowCap(1, 1, False)
        Dim cap2 As New AdjustableArrowCap(2, 1)
        cap1.BaseCap = LineCap.Round
        cap1.BaseInset = 5
        cap1.StrokeJoin = LineJoin.Bevel
        cap2.WidthScale = 3
        cap2.BaseCap = LineCap.Square
        cap2.Height = 1
        Dim blackPen As New Pen(Color.Black, 15)
        blackPen.CustomStartCap = cap1
        blackPen.CustomEndCap = cap2
        g.DrawLine(blackPen, 20, 50, 200, 50)
        blackPen.Dispose()
        g.Dispose()
  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

Create Pen from Color

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class GDIObjectsPenColor
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class
Public Class Form1
    Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
        Dim canvas As Graphics = e.Graphics
        
        Dim pen1 As New Pen(Color.Blue)
        canvas.DrawEllipse(pen1, 100, 50, 300, 200)
        
        canvas = Nothing
    End Sub
End Class

<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _
Partial Class Form1
    Inherits System.Windows.Forms.Form
    "Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing AndAlso components IsNot Nothing Then
            components.Dispose()
        End If
        MyBase.Dispose(disposing)
    End Sub
    "Required by the Windows Form Designer
    Private components As System.ruponentModel.IContainer
    "NOTE: The following procedure is required by the Windows Form Designer
    "It can be modified using the Windows Form Designer.  
    "Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.SuspendLayout()
        "
        "Form1
        "
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(610, 328)
        Me.Name = "Form1"
        Me.Text = "Creating Graphics Objects (Color, Pen, Font, Brush)"
        Me.ResumeLayout(False)
    End Sub
End Class

Create Pen from HatchBrush

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class CreatePenFromHatchBrush
   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 g As Graphics = Me.CreateGraphics()
        g.Clear(Me.BackColor)
        " Create a solid and hatch brush
        Dim blueBrush As New SolidBrush(Color.Blue)
        Dim hatchBrush As New HatchBrush(HatchStyle.DashedVertical, Color.Black, Color.Green)
        " Create a pen from a solid brush with
        " width 3
        Dim pn1 As New Pen(blueBrush, 3)
        " Create a pen from a hatch brush
        Dim pn2 As New Pen(hatchBrush, 8)
        " Create a pen from a Color structure
        Dim pn3 As New Pen(Color.Red)
        " Draw a line, ellipse, and rectangle
        g.DrawLine(pn1, New Point(10, 40), New Point(10, 90))
        g.DrawEllipse(pn2, 20, 50, 100, 100)
        g.DrawRectangle(pn3, 40, 90, 100, 100)
        " Dispose
        pn1.Dispose()
        pn2.Dispose()
        pn3.Dispose()
        blueBrush.Dispose()
        hatchBrush.Dispose()
        g.Dispose()

  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

Create Pen from LinearGradientBrush

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class PenStyleLinearGradientBrush
   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 g As Graphics = Me.CreateGraphics()
        g.Clear(Me.BackColor)
        Dim img = New Bitmap("yourfile.jpg")
        Dim redBrush As New SolidBrush(Color.Red)
        Dim txtrBrush As New TextureBrush(img)
        Dim lgBrush As New LinearGradientBrush(New Rectangle(10, 10, 10, 10), Color.Red, Color.Black, 45.0F)
        Dim pn1 As New Pen(redBrush, 4)
        Dim pn2 As New Pen(txtrBrush, 20)
        Dim pn3 As New Pen(lgBrush, 20)
      
        g.DrawEllipse(pn1, 100, 100, 50, 50)
        g.DrawRectangle(pn2, 80, 80, 100, 100)
        g.DrawEllipse(pn3, 30, 30, 200, 200)
        Console.WriteLine(pn1.PenType.ToString())
        Console.WriteLine(pn2.PenType.ToString())
        Console.WriteLine(pn3.PenType.ToString())

        redBrush.Dispose()
        txtrBrush.Dispose()
        lgBrush.Dispose()
        img.Dispose()
        pn1.Dispose()
        pn2.Dispose()
        pn3.Dispose()
        g.Dispose()
  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

Create Pen from SolidBrush

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class PenStyleSolidBrush
   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)
        " Create a Graphics object
        Dim g As Graphics = Me.CreateGraphics()
        g.Clear(Me.BackColor)
        " Create three different types of brushes
        Dim img = New Bitmap("yourfile.jpg")
        Dim redBrush As New SolidBrush(Color.Red)
        Dim txtrBrush As New TextureBrush(img)
        Dim lgBrush As New LinearGradientBrush(New Rectangle(10, 10, 10, 10), Color.Red, Color.Black, 45.0F)
        Dim pn1 As New Pen(redBrush, 4)
        Dim pn2 As New Pen(txtrBrush, 20)
        Dim pn3 As New Pen(lgBrush, 20)
      
        g.DrawEllipse(pn1, 100, 100, 50, 50)
        g.DrawRectangle(pn2, 80, 80, 100, 100)
        g.DrawEllipse(pn3, 30, 30, 200, 200)
        Console.WriteLine(pn1.PenType.ToString())
        Console.WriteLine(pn2.PenType.ToString())
        Console.WriteLine(pn3.PenType.ToString())
        redBrush.Dispose()
        txtrBrush.Dispose()
        lgBrush.Dispose()
        img.Dispose()
        pn1.Dispose()
        pn2.Dispose()
        pn3.Dispose()
        g.Dispose()
  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

Create Pen from TextureBrush

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class PenStyleTextureBrush
   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 g As Graphics = Me.CreateGraphics()
        g.Clear(Me.BackColor)
        Dim img = New Bitmap("yourfile.jpg")
        Dim redBrush As New SolidBrush(Color.Red)
        Dim txtrBrush As New TextureBrush(img)
        Dim lgBrush As New LinearGradientBrush(New Rectangle(10, 10, 10, 10), Color.Red, Color.Black, 45.0F)
        Dim pn1 As New Pen(redBrush, 4)
        Dim pn2 As New Pen(txtrBrush, 20)
        Dim pn3 As New Pen(lgBrush, 20)
      
        g.DrawEllipse(pn1, 100, 100, 50, 50)
        g.DrawRectangle(pn2, 80, 80, 100, 100)
        g.DrawEllipse(pn3, 30, 30, 200, 200)
        Console.WriteLine(pn1.PenType.ToString())
        Console.WriteLine(pn2.PenType.ToString())
        Console.WriteLine(pn3.PenType.ToString())

        redBrush.Dispose()
        txtrBrush.Dispose()
        lgBrush.Dispose()
        img.Dispose()
        pn1.Dispose()
        pn2.Dispose()
        pn3.Dispose()
        g.Dispose()
  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

Create Pen with Color and Width

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class GDIObjectsCreatePenWidth
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class
Public Class Form1
    Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
        Dim canvas As Graphics = e.Graphics
        
        Dim pen1 As New Pen(Color.Blue, 30)
        canvas.DrawEllipse(pen1, 100, 50, 300, 200)
        
        canvas = Nothing
    End Sub
End Class

<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _
Partial Class Form1
    Inherits System.Windows.Forms.Form
    "Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing AndAlso components IsNot Nothing Then
            components.Dispose()
        End If
        MyBase.Dispose(disposing)
    End Sub
    "Required by the Windows Form Designer
    Private components As System.ruponentModel.IContainer
    "NOTE: The following procedure is required by the Windows Form Designer
    "It can be modified using the Windows Form Designer.  
    "Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.SuspendLayout()
        "
        "Form1
        "
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(610, 328)
        Me.Name = "Form1"
        Me.Text = "Creating Graphics Objects (Color, Pen, Font, Brush)"
        Me.ResumeLayout(False)
    End Sub
End Class

Draw thick rectangle outline in red

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class ThickPenDemo
   public Shared Sub Main
        Application.Run(New FrmDrawShapes)
   End Sub
End class
Public Class FrmDrawShapes
   Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
   Public Sub New()
      MyBase.New()
      "This call is required by the Windows Form Designer.
      InitializeComponent()
      "Add any initialization after the InitializeComponent() call
   End Sub
   "Form overrides dispose to clean up the component list.
   Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
      If disposing Then
         If Not (components Is Nothing) Then
            components.Dispose()
         End If
      End If
      MyBase.Dispose(disposing)
   End Sub
   "Required by the Windows Form Designer
   Private components As System.ruponentModel.Container
   "NOTE: The following procedure is required by the Windows Form Designer
   "It can be modified using the Windows Form Designer.  
   "Do not modify it using the code editor.
   <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
      "
      "frmDrawShapes
      "
      Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
      Me.ClientSize = New System.Drawing.Size(520, 197)
      Me.Name = "frmDrawShapes"
      Me.Text = "Drawing Shapes"
   End Sub
#End Region
   Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
      Dim graphicsObject As Graphics = e.Graphics
      Dim thickRedPen As Pen = New Pen(Color.Red, 10)
      Dim drawArea2 As Rectangle = New Rectangle(80, 30, 65, 100)
      
      graphicsObject.DrawRectangle(thickRedPen, drawArea2)
   End Sub 
End Class

One pixel pen

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class PenOnePixel
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class
Public Class Form1
    Private Sub Form11_Paint(ByVal sender As Object, _
          ByVal e As System.Windows.Forms.PaintEventArgs) _
          Handles Me.Paint
         e.Graphics.PageUnit = GraphicsUnit.Millimeter

        e.Graphics.DrawLine(New Pen(Color.Black, 1 / e.Graphics.DpiX), 0, 0, 200, 200)
    End Sub
End Class

<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _
Partial Class Form1
    Inherits System.Windows.Forms.Form
    "Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing AndAlso components IsNot Nothing Then
            components.Dispose()
        End If
        MyBase.Dispose(disposing)
    End Sub
    "Required by the Windows Form Designer
    Private components As System.ruponentModel.IContainer
    "NOTE: The following procedure is required by the Windows Form Designer
    "It can be modified using the Windows Form Designer.  
    "Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.SuspendLayout()
        "
        "Form1
        "
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(617, 197)
        Me.MaximizeBox = False
        Me.ResumeLayout(False)
    End Sub
End Class

PenAlignment.Inset, PenAlignment.Outset, PenAlignment.Left

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class PenAlignmentInsetOutsetLeft
   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 g As Graphics = Me.CreateGraphics()
        g.Clear(Me.BackColor)
        Dim pn1 As New Pen(Color.Red, 3)
        Dim pn2 As New Pen(Color.Blue)
        Dim pn3 As New Pen(Color.Red)
        Dim greenBrush As New SolidBrush(Color.Green)
        pn1.Color = Color.Black
        pn1.Brush = greenBrush
        pn1.Width = 4
        pn1.Alignment = PenAlignment.Left
        Dim style As PenType = pn1.PenType
        pn2.Width = 3
        pn2.Alignment = PenAlignment.Inset
        pn3.Width = 3
        pn3.Alignment = PenAlignment.Outset
        g.DrawLine(pn1, New Point(10, 10), New Point(150, 10))
        g.DrawLine(pn2, New Point(10, 30), New Point(200, 30))
        g.DrawLine(pn3, New Point(10, 50), New Point(250, 50))
        pn1.Dispose()
        pn2.Dispose()
        pn3.Dispose()
        g.Dispose()
  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

Pen.ScaleTransform

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class ScaleTransformPen
   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 g As Graphics = Me.CreateGraphics()
        g.Clear(Me.BackColor)
        Dim bluePen As New Pen(Color.Blue, 10)
        Dim redPen As New Pen(Color.Red, 5)
        bluePen.ScaleTransform(3, 1)
        g.DrawEllipse(bluePen, 20, 20, 100, 50)
        g.DrawRectangle(redPen, 20, 120, 100, 50)
        bluePen.RotateTransform(90, MatrixOrder.Append)
        redPen.ScaleTransform(4, 2, MatrixOrder.Append)
        g.DrawEllipse(bluePen, 220, 20, 100, 50)
        g.DrawRectangle(redPen, 220, 120, 100, 50)
        redPen.Dispose()
        bluePen.Dispose()
        g.Dispose()

  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

Pen.SetLineCap

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class PenSetLineCap
   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 g As Graphics = Me.CreateGraphics()
        g.Clear(Me.BackColor)
        Dim redPen As New Pen(Color.Red, 6)
        Dim bluePen As New Pen(Color.Blue, 7)
        Dim greenPen As New Pen(Color.Green, 7)
        redPen.Width = 8
        redPen.DashStyle = DashStyle.Dash
        redPen.SetLineCap(LineCap.DiamondAnchor, LineCap.ArrowAnchor, DashCap.Flat)
        greenPen.DashStyle = DashStyle.DashDotDot
        greenPen.StartCap = LineCap.Triangle
        greenPen.EndCap = LineCap.Triangle
        greenPen.DashCap = DashCap.Triangle
        greenPen.DashStyle = DashStyle.Dot
        greenPen.DashOffset = 3.4F
        bluePen.StartCap = LineCap.Square
        bluePen.EndCap = LineCap.SquareAnchor
        greenPen.SetLineCap(LineCap.RoundAnchor, LineCap.Square, DashCap.Round)
        g.DrawLine(redPen, New Point(20, 50), New Point(150, 50))
        g.DrawLine(greenPen, New Point(30, 80), New Point(200, 80))
        g.DrawLine(bluePen, New Point(30, 120), New Point(250, 120))
        redPen.Dispose()
        greenPen.Dispose()
        greenPen.Dispose()
        g.Dispose()

  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

Pen Style: Dot, Dot Dot, Dot Dash, Dash Dot

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class PenStyle
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class
Class Form1
    Inherits System.Windows.Forms.Form
    Public Sub New()
        MyBase.New()
        InitializeComponent()
    End Sub
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub
    Private components As System.ruponentModel.IContainer
    Friend WithEvents PictureBox1 As System.Windows.Forms.PictureBox
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents Button3 As System.Windows.Forms.Button
    Friend WithEvents Button4 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.PictureBox1 = New System.Windows.Forms.PictureBox
        Me.Button1 = New System.Windows.Forms.Button
        Me.Button2 = New System.Windows.Forms.Button
        Me.Button3 = New System.Windows.Forms.Button
        Me.Button4 = New System.Windows.Forms.Button
        Me.SuspendLayout()
        "
        "PictureBox1
        "
        Me.PictureBox1.BackColor = System.Drawing.SystemColors.Window
        Me.PictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.PictureBox1.Dock = System.Windows.Forms.DockStyle.Top
        Me.PictureBox1.Location = New System.Drawing.Point(0, 0)
        Me.PictureBox1.Name = "PictureBox1"
        Me.PictureBox1.Size = New System.Drawing.Size(360, 176)
        Me.PictureBox1.TabIndex = 0
        Me.PictureBox1.TabStop = False
        "
        "Button1
        "
        Me.Button1.Location = New System.Drawing.Point(8, 192)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(72, 32)
        Me.Button1.TabIndex = 1
        Me.Button1.Text = "Dashed Line"
        "
        "Button2
        "
        Me.Button2.Location = New System.Drawing.Point(96, 192)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(72, 32)
        Me.Button2.TabIndex = 2
        Me.Button2.Text = "Dotted Line"
        "
        "Button3
        "
        Me.Button3.Location = New System.Drawing.Point(184, 192)
        Me.Button3.Name = "Button3"
        Me.Button3.Size = New System.Drawing.Size(80, 32)
        Me.Button3.TabIndex = 3
        Me.Button3.Text = "Dot Dot"
        "
        "Button4
        "
        Me.Button4.Location = New System.Drawing.Point(280, 192)
        Me.Button4.Name = "Button4"
        Me.Button4.Size = New System.Drawing.Size(72, 32)
        Me.Button4.TabIndex = 4
        Me.Button4.Text = "Dot"
        "
        "Form1
        "
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(360, 238)
        Me.Controls.Add(Me.Button4)
        Me.Controls.Add(Me.Button3)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.PictureBox1)
        Me.ResumeLayout(False)
    End Sub
    Dim pen1 As System.Drawing.Pen
    Dim g As System.Drawing.Graphics
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        PictureBox1.Refresh()
        g = PictureBox1.CreateGraphics
        pen1 = New System.Drawing.Pen(Color.Green, 3)
        pen1.DashStyle = Drawing.Drawing2D.DashStyle.Dash
        g.DrawEllipse(pen1, 70, 10, 100, 150)
        g.DrawLine(pen1, 10, 10, 120, 30)
    End Sub
    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        PictureBox1.Refresh()
        g = PictureBox1.CreateGraphics
        pen1 = New System.Drawing.Pen(Color.Green, 3)
        pen1.DashStyle = Drawing.Drawing2D.DashStyle.DashDot
        g.DrawEllipse(pen1, 70, 10, 100, 150)
        g.DrawLine(pen1, 10, 10, 120, 30)
    End Sub
    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        PictureBox1.Refresh()
        g = PictureBox1.CreateGraphics
        pen1 = New System.Drawing.Pen(Color.Green, 3)
        pen1.DashStyle = Drawing.Drawing2D.DashStyle.DashDotDot
        g.DrawEllipse(pen1, 70, 10, 100, 150)
        g.DrawLine(pen1, 10, 10, 120, 30)
    End Sub
    Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
        PictureBox1.Refresh()
        g = PictureBox1.CreateGraphics
        pen1 = New System.Drawing.Pen(Color.Green, 3)
        pen1.DashStyle = Drawing.Drawing2D.DashStyle.Dot
        g.DrawEllipse(pen1, 70, 10, 100, 150)
        g.DrawLine(pen1, 10, 10, 120, 30)
    End Sub
End Class

PixelOffsetMode

Imports System.Drawing
Imports System.Drawing.Imaging
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class PixelOffsetMode
   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 g As Graphics = Me.CreateGraphics()
        g.Clear(Me.BackColor)
        Dim redPen As New Pen(Color.Red, 6)
        Dim bluePen As New Pen(Color.Blue, 10)
        Dim blackPen As New Pen(Color.Black, 5)
        g.PixelOffsetMode = PixelOffsetMode.Half
        g.DrawRectangle(bluePen, 10, 20, 100, 50)
        g.DrawEllipse(redPen, 10, 150, 100, 50)
        g.DrawLine(blackPen, 150, 100, 250, 220)
        g.Dispose()
  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 Line StrokeCaps

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class SetStrokeCaps
   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)
        " Create a graphic 
        Dim g As Graphics = Me.CreateGraphics()
        g.Clear(Me.BackColor)
        Dim points As Point() = {New Point(-3, -3), New Point(0, 0), New Point(3, -3)}
        Dim path As New GraphicsPath
        path.AddLines(points)
        Dim cap As New CustomLineCap(Nothing, path)
        cap.SetStrokeCaps(LineCap.Round, LineCap.Triangle)
        Dim redPen As New Pen(Color.Red, 15)
        redPen.CustomStartCap = cap
        redPen.CustomEndCap = cap
        redPen.DashStyle = DashStyle.DashDotDot
        g.DrawLine(redPen, New Point(100, 100), New Point(400, 100))
        g.Dispose()
  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 DashCap and DashStyle

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class PenDashStyle
   public Shared Sub Main
        Application.Run(New FrmDrawShapes)
   End Sub
End class
Public Class FrmDrawShapes
   Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
   Public Sub New()
      MyBase.New()
      "This call is required by the Windows Form Designer.
      InitializeComponent()
      "Add any initialization after the InitializeComponent() call
   End Sub
   "Form overrides dispose to clean up the component list.
   Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
      If disposing Then
         If Not (components Is Nothing) Then
            components.Dispose()
         End If
      End If
      MyBase.Dispose(disposing)
   End Sub
   "Required by the Windows Form Designer
   Private components As System.ruponentModel.Container
   "NOTE: The following procedure is required by the Windows Form Designer
   "It can be modified using the Windows Form Designer.  
   "Do not modify it using the code editor.
   <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
      "
      "frmDrawShapes
      "
      Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
      Me.ClientSize = New System.Drawing.Size(520, 197)
      Me.Name = "frmDrawShapes"
      Me.Text = "Drawing Shapes"
   End Sub
#End Region
   Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
      Dim graphicsObject As Graphics = e.Graphics
      Dim solidColorBrush As SolidBrush = New SolidBrush(Color.Red)
      Dim coloredPen As Pen = New Pen(solidColorBrush)
      " draw a rounded, dashed yellow line
      coloredPen.Color = Color.Yellow
      coloredPen.Width = 6
      coloredPen.DashCap = LineCap.Round
      coloredPen.DashStyle = DashStyle.Dash
      graphicsObject.DrawLine(coloredPen, 320, 30, 395, 150)
   End Sub 
End Class

Set Pen DashStyle, StartCap, EndCap, DashOffset

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class PenStyleStartEndCap
   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 g As Graphics = Me.CreateGraphics()
        g.Clear(Me.BackColor)
        Dim redPen As New Pen(New SolidBrush(Color.Red), 4)
        Dim bluePen As New Pen(New SolidBrush(Color.Blue), 5)
        Dim blackPen As New Pen(New SolidBrush(Color.Black), 3)
        redPen.DashStyle = DashStyle.Dash
        redPen.SetLineCap(LineCap.DiamondAnchor, LineCap.ArrowAnchor, DashCap.Flat)
        bluePen.DashStyle = DashStyle.DashDotDot
        bluePen.StartCap = LineCap.Triangle
        bluePen.EndCap = LineCap.Triangle
        bluePen.DashCap = DashCap.Triangle
        blackPen.DashStyle = DashStyle.Dot
        blackPen.DashOffset = 3.4F
        blackPen.SetLineCap(LineCap.RoundAnchor, LineCap.Square, DashCap.Round)
        " Drawing objects      
        g.DrawArc(redPen, 10.0F, 10.0F, 50, 100, 45.0F, 90.0F)
        g.DrawRectangle(bluePen, 60, 80, 140, 50)
        g.DrawBezier(blackPen, 20.0F, 30.0F, 100.0F, 200.0F, 40.0F, 400.0F, 100.0F, 200.0F)
        g.DrawEllipse(redPen, 50, 50, 200, 100)
        " Dispose
        redPen.Dispose()
        bluePen.Dispose()
        blackPen.Dispose()
        g.Dispose()
  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 width and color

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class PenWidthColor
   public Shared Sub Main
        Application.Run(New FrmDrawShapes)
   End Sub
End class
Public Class FrmDrawShapes
   Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
   Public Sub New()
      MyBase.New()
      "This call is required by the Windows Form Designer.
      InitializeComponent()
      "Add any initialization after the InitializeComponent() call
   End Sub
   "Form overrides dispose to clean up the component list.
   Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
      If disposing Then
         If Not (components Is Nothing) Then
            components.Dispose()
         End If
      End If
      MyBase.Dispose(disposing)
   End Sub
   "Required by the Windows Form Designer
   Private components As System.ruponentModel.Container
   "NOTE: The following procedure is required by the Windows Form Designer
   "It can be modified using the Windows Form Designer.  
   "Do not modify it using the code editor.
   <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
      "
      "frmDrawShapes
      "
      Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
      Me.ClientSize = New System.Drawing.Size(520, 197)
      Me.Name = "frmDrawShapes"
      Me.Text = "Drawing Shapes"
   End Sub
#End Region
   Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
      Dim graphicsObject As Graphics = e.Graphics
      Dim solidColorBrush As SolidBrush = New SolidBrush(Color.Red)
      Dim coloredPen As Pen = New Pen(solidColorBrush)
      coloredPen.Color = Color.White
      coloredPen.Width = 6
      graphicsObject.DrawPie(coloredPen, 240, 30, 75, 100, 0, 270)
   End Sub 
End Class
Источник — «http://vbex.ru/index.php?title=VB.Net_Tutorial/2D_Graphics/Pen&oldid=3310»