VB.Net Tutorial/2D Graphics/PageUnit

Change PageUnit

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class TransformUnits
   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)
        g.DrawEllipse(Pens.Red, 0, 0, 100, 50)
        g.PageUnit = GraphicsUnit.Pixel
        g.DrawEllipse(Pens.Red, 0, 0, 100, 50)
        g.PageUnit = GraphicsUnit.Millimeter
        g.DrawEllipse(Pens.Blue, 0, 0, 100, 50)
        g.PageUnit = GraphicsUnit.Point
        g.DrawEllipse(Pens.Green, 0, 0, 100, 50)
        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

Change Pen width by setting the PageUnit

Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class PenWidth
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class
Public Class Form1
    Private Sub RadioButton_CheckedChanged( _
          ByVal sender As System.Object, _
          ByVal e As System.EventArgs) _
          Handles UsePixels.CheckedChanged, _
          UseMillimeters.CheckedChanged, _
          UseInches.CheckedChanged
        " ----- Change the scaling system.
        Me.Refresh()
    End Sub
    Private Sub Form1_Paint(ByVal sender As Object, _
          ByVal e As System.Windows.Forms.PaintEventArgs) _
          Handles Me.Paint
        Dim canvas As Graphics
        canvas = e.Graphics
        If (UseMillimeters.Checked = True) Then
            canvas.PageUnit = GraphicsUnit.Millimeter
        ElseIf (UseInches.Checked = True) Then
            canvas.PageUnit = GraphicsUnit.Inch
        Else
            canvas.PageUnit = GraphicsUnit.Pixel
        End If
        canvas.DrawLine(New Pen(Color.Red, 1), 1, 1,200, 100)
    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.UsePixels = New System.Windows.Forms.RadioButton
        Me.UseMillimeters = New System.Windows.Forms.RadioButton
        Me.UseInches = New System.Windows.Forms.RadioButton
        Me.SuspendLayout()
        "
        "UsePixels
        "
        Me.UsePixels.AutoSize = True
        Me.UsePixels.Checked = True
        Me.UsePixels.Location = New System.Drawing.Point(24, 128)
        Me.UsePixels.Name = "UsePixels"
        Me.UsePixels.Size = New System.Drawing.Size(52, 17)
        Me.UsePixels.TabIndex = 0
        Me.UsePixels.TabStop = True
        Me.UsePixels.Text = "Pixels"
        Me.UsePixels.UseVisualStyleBackColor = True
        "
        "UseMillimeters
        "
        Me.UseMillimeters.AutoSize = True
        Me.UseMillimeters.Location = New System.Drawing.Point(24, 152)
        Me.UseMillimeters.Name = "UseMillimeters"
        Me.UseMillimeters.Size = New System.Drawing.Size(73, 17)
        Me.UseMillimeters.TabIndex = 1
        Me.UseMillimeters.Text = "Millimeters"
        Me.UseMillimeters.UseVisualStyleBackColor = True
        "
        "UseInches
        "
        Me.UseInches.AutoSize = True
        Me.UseInches.Location = New System.Drawing.Point(24, 176)
        Me.UseInches.Name = "UseInches"
        Me.UseInches.Size = New System.Drawing.Size(57, 17)
        Me.UseInches.TabIndex = 2
        Me.UseInches.Text = "Inches"
        Me.UseInches.UseVisualStyleBackColor = True
        "
        "Form1
        "
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(513, 384)
        Me.Controls.Add(Me.UseInches)
        Me.Controls.Add(Me.UseMillimeters)
        Me.Controls.Add(Me.UsePixels)
        Me.Name = "Form1"
        Me.Text = "Drawing Lines One Pixel Wide Regardless of Scaling"
        Me.ResumeLayout(False)
        Me.PerformLayout()
    End Sub
    Friend WithEvents UsePixels As System.Windows.Forms.RadioButton
    Friend WithEvents UseMillimeters As System.Windows.Forms.RadioButton
    Friend WithEvents UseInches As System.Windows.Forms.RadioButton
End Class