作者:VB.NET开发
项目:System.Drawin
Private Sub CreatePointsAndSizes(ByVal e As PaintEventArgs)
' Create the starting point.
Dim startPoint As New Point(subtractButton.Size)
' Use the addition operator to get the end point.
Dim endPoint As Point = Point.op_Addition(startPoint, _
New Size(140, 150))
' Draw a line between the points.
e.Graphics.DrawLine(SystemPens.Highlight, startPoint, endPoint)
' Convert the starting point to a size and compare it to the
' subtractButton size.
Dim buttonSize As Size = Point.op_Explicit(startPoint)
If (Size.op_Equality(buttonSize, subtractButton.Size)) Then
' If the sizes are equal, tell the user.
e.Graphics.DrawString("The sizes are equal.", _
New Font(Me.Font, FontStyle.Italic), _
Brushes.Indigo, 10.0F, 65.0F)
End If
End Sub