VB.Net by API/System.Drawing/Region

Region.Complement

<source lang="vbnet"> Imports System Imports System.ruponentModel Imports System.Windows.Forms Imports System.Data Imports System.Configuration Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Drawing.Text Imports System.Globalization Imports System.Text Imports System.Collections Public Class MainClass

   Shared Sub Main()
       
       Dim myform As Form = New CombinationsForm()
       Application.Run(myform)
   End Sub

End Class Public Class CombinationsForm

   Inherits System.Windows.Forms.Form
   Public Sub New()
       MyBase.New()
       Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
       Me.ClientSize = New System.Drawing.Size(244, 118)
       Me.Text = "CombinationsForm"
   End Sub
   Private Sub CombinationsForm_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint
       Dim g As Graphics = e.Graphics
       Dim width As Single = Me.ClientSize.Width 
       Dim height As Single = Me.ClientSize.Height
       Dim rect As RectangleF = New RectangleF(0, 0, width, height)
       Dim format As StringFormat = New StringFormat()
       format.Alignment = StringAlignment.Center
       format.LineAlignment = StringAlignment.Center
       Dim path1 As GraphicsPath = New GraphicsPath()
       Dim path2 As GraphicsPath = New GraphicsPath()
       Dim path1Rect As RectangleF = New RectangleF(0, 0, width * 2.0F / 3.0F, height)
       Dim path2rect As RectangleF = path1Rect
       path2rect.Offset(width * 1.0F / 3.0F, 0)
       path1.AddEllipse(path1Rect)
       path2.AddEllipse(path2rect)
       Dim region As Region = New Region(path1)
       region.ruplement(path2)
       g.FillRegion(Brushes.Red, region)
       g.DrawString("Complement", Me.Font, Brushes.Black, rect, format)
       g.DrawRectangle(Pens.Black, rect.X, rect.Y, rect.Width, rect.Height)
       g.TranslateTransform(width, 0)
   End Sub

End Class

 </source>

Region.Exclude

<source lang="vbnet"> Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class ClipRegionExclude

  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 pen As New Pen(Color.Red, 5)
       Dim brush As New SolidBrush(Color.Red)
       Dim rect1 As New Rectangle(50, 0, 50, 150)
       Dim rect2 As New Rectangle(0, 50, 150, 50)
       Dim [region] As New [Region](rect1)
       [region].Exclude(rect2)
       g.FillRegion(brush, [region])
       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

 </source>

Region.GetBounds

<source lang="vbnet">

Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms Imports System.Math public class MeasureCharacterRange

  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 txt As String = "www.vbex.ru"
       Dim the_font As New Font("Times New Roman", 50, FontStyle.Bold, GraphicsUnit.Pixel)
       Dim layout_rect As New RectangleF(0, 0, Me.ClientSize.Width, Me.ClientSize.Height)
       Dim string_format As New StringFormat
       string_format.LineAlignment = StringAlignment.Center
       string_format.Alignment = StringAlignment.Center
       e.Graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAliasGridFit
       Dim character_ranges(txt.Length - 1) As CharacterRange
       For i As Integer = 0 To txt.Length - 1
           character_ranges(i) = New CharacterRange(i, 1)
       Next i
       string_format.SetMeasurableCharacterRanges(character_ranges)
       Dim character_regions() As Region = e.Graphics.MeasureCharacterRanges(txt, the_font, layout_rect, string_format)
       For Each rgn As Region In character_regions
           Dim character_bounds As RectangleF = rgn.GetBounds(e.Graphics)
           Dim character_rect As Rectangle = Rectangle.Round(character_bounds)
           e.Graphics.DrawRectangle(Pens.White, character_rect)
       Next rgn
       e.Graphics.DrawString(txt, the_font, Brushes.Black, layout_rect, string_format)
 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

 </source>

Region.Intersect

<source lang="vbnet"> Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class ClipRegionIntersect

  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 pen As New Pen(Color.Red, 5)
       Dim brush As New SolidBrush(Color.Red)
       Dim rect1 As New Rectangle(50, 0, 50, 150)
       Dim rect2 As New Rectangle(0, 50, 150, 50)
       Dim [region] As New [Region](rect1)
       [region].Intersect(rect2)
       g.FillRegion(brush, [region])
       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

 </source>

Region.Union

<source lang="vbnet"> Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class ClipRegionUnion

  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 pen As New Pen(Color.Red, 5)
       Dim brush As New SolidBrush(Color.Red)
       Dim rect1 As New Rectangle(50, 0, 50, 150)
       Dim rect2 As New Rectangle(0, 50, 150, 50)
       Dim [region] As New [Region](rect1)
       [region].Union(rect2)
       g.FillRegion(brush, [region])
       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

 </source>

Region.Xor

<source lang="vbnet"> Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class ClipRegionXor

  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 pen As New Pen(Color.Red, 5)
       Dim brush As New SolidBrush(Color.Red)
       Dim rect1 As New Rectangle(50, 0, 50, 150)
       Dim rect2 As New Rectangle(0, 50, 150, 50)
       Dim [region] As New [Region](rect1)
       [region].Xor(rect2)
       g.FillRegion(brush, [region])
       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

 </source>