VB.Net by API/System.Drawing.Drawing2D/CombineMode

CombineMode.Exclude

  
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class CombineModeExclude
   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 rect1 As New RectangleF(20.0F, 20.0F, 200.0F, 200.0F)
        Dim rgn1 As New [Region](rect1)
        g.SetClip(rgn1, CombineMode.Exclude)
        Dim h As Single = 20.0F
        Dim w As Single = 30.0F
        g.TranslateClip(h, w)
        g.FillRectangle(Brushes.Green, 20, 20, 300, 300)
  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

CombineMode.Intersect

  
Imports System
Imports System.Windows.Forms
Imports System.Drawing
Imports System.Drawing.Drawing2D

Public Class MainClass
  Shared Sub Main()
     Dim form1 As Form1 = new Form1
     Application.Run(form1)
  End Sub
  
End Class
Public Class Form1
  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.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.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
    Me.ClientSize = New System.Drawing.Size(352, 273)
    Me.Name = "Form1"
    Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
    Me.Text = "Form1"
    Me.ResumeLayout(False)
  End Sub
#End Region
   Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
    Dim G As Graphics = Me.CreateGraphics
    Dim R As New Rectangle(40.0F, 20.0F, 100.0F, 100.0F)
    Dim R2 As New Rectangle(60.0F, 20.0F, 120.0F, 120.0F)
    Dim P1 As New GraphicsPath()
    Dim P2 As New GraphicsPath()
    G.Clear(Color.Gainsboro)
    P1.AddEllipse(R)
    G.DrawPath(Pens.Black, P1)
    P2.AddEllipse(R2)
    G.DrawPath(Pens.Black, P2)
    G.SetClip(P1)
    G.SetClip(P2, CombineMode.Intersect)
    " Draw some clipped strings.
    Dim F As New Font("Arial", 16)
    G.DrawString("www.vbex.ru", F, Brushes.DeepPink, 15, 25)
  End Sub
End Class