VB.Net by API/System.Drawing/PointF

New PointF

   
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class DrawLineUsingPointFStructure
   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 blackPen As New Pen(Color.Black, 4)
        " 
        " 
        Dim ptf1 As New PointF(20.0F, 20.0F)
        Dim ptf2 As New PointF(200.0F, 200.0F)
        e.Graphics.DrawLine(blackPen, ptf1, ptf2)
  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

PointF.Empty

   
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class UsePointF
   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 pt As New PointF(50.0F, 50.0F)
        Dim newPoint As PointF = PointF.Empty
        newPoint.X = 100.0F
        newPoint.Y = 200.0F
        Dim g As Graphics = Graphics.FromHwnd(Me.Handle)
        Dim pn As New Pen(Color.Blue, 4)

        g.DrawLine(pn, pt, newPoint)
        pn.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