Form.CreateGraphics : Form « System.Windows.Forms « VB.Net by API

1. VB.Net by API
2. System.Windows.Forms
3. Form

Form.CreateGraphics

  


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

public class DrawCircle
   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 a As Graphics =  e.Graphics
        Dim mypen As Pen
        Dim myrect As RectangleF

        mypen = New Pen(System.Drawing.Color.Red, 6)

        a = Me.CreateGraphics
        a.Clear(Me.BackColor)
        a.DrawEllipse(mypen, 100, 100, 50, 50)
        a.DrawEllipse(mypen, 75, 75, 100, 100)
        a.DrawEllipse(mypen, 25, 25, 200, 200)
        a.DrawEllipse(mypen, 0, 0, 250, 250)

        myrect.X = 300
        myrect.Y = 10
        myrect.Width = 250
        myrect.Height = 100
        a.DrawEllipse(mypen, myrect)

        myrect.X = 400
        myrect.Y = 10
        myrect.Width = 100
        myrect.Height = 250
        a.DrawEllipse(mypen, myrect)


        a.Dispose()
        mypen.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

   
    
  

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