本文整理匯總了VB.NET中System.Windows.Media.Visual.AddVisualChild方法的典型用法代碼示例。如果您正苦於以下問題：VB.NET Visual.AddVisualChild方法的具體用法？VB.NET Visual.AddVisualChild怎麽用？VB.NET Visual.AddVisualChild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。
在下文中一共展示了Visual.AddVisualChild方法的1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: MyVisualHost
' Create a host visual derived from the FrameworkElement class.
' This class provides layout, event handling, and container support for
' the child visual object.
Public Class MyVisualHost
Inherits FrameworkElement
Private _child As DrawingVisual
Public Sub New(ByVal drawingVisual As DrawingVisual)
_child = drawingVisual
Me.AddVisualChild(_child)
End Sub
Public Property Child() As DrawingVisual
Get
Return _child
End Get
Set(ByVal value As DrawingVisual)
If _child IsNot value Then
Me.RemoveVisualChild(_child)
_child = value
Me.AddVisualChild(_child)
End If
End Set
End Property
' Provide a required override for the VisualChildrenCount property.
Protected Overrides ReadOnly Property VisualChildrenCount() As Integer
Get
Return If(_child Is Nothing, 0, 1)
End Get
End Property
' Provide a required override for the GetVisualChild method.
Protected Overrides Function GetVisualChild(ByVal index As Integer) As Visual
If _child Is Nothing Then
Throw New ArgumentOutOfRangeException()
End If
Return _child
End Function