本文整理匯總了VB.NET中System.Drawing.Region.Union方法的典型用法代碼示例。如果您正苦於以下問題：VB.NET Region.Union方法的具體用法？VB.NET Region.Union怎麽用？VB.NET Region.Union使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類System.Drawing.Region的用法示例。
在下文中一共展示了Region.Union方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的VB.NET代碼示例。
示例1: Rectangle
Public Sub Union_RectF_Example(ByVal e As PaintEventArgs)
' Create the first rectangle and draw it to the screen in black.
Dim regionRect As New Rectangle(20, 20, 100, 100)
e.Graphics.DrawRectangle(Pens.Black, regionRect)
' create the second rectangle and draw it to the screen in red.
Dim unionRect As New RectangleF(90, 30, 100, 100)
e.Graphics.DrawRectangle(Pens.Red, Rectangle.Round(unionRect))
' Create a region using the first rectangle.
Dim myRegion As New [Region](regionRect)
' Get the area of union for myRegion when combined with
' complementRect.
myRegion.Union(unionRect)
' Fill the intersection area of myRegion with blue.
Dim myBrush As New SolidBrush(Color.Blue)
e.Graphics.FillRegion(myBrush, myRegion)
End Sub示例2: ClipRegionUnion
' 導入命名空間
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