本文整理汇总了VB.NET中System.Windows.Ink.Stroke.OnInvalidated方法的典型用法代码示例。如果您正苦于以下问题：VB.NET Stroke.OnInvalidated方法的具体用法？VB.NET Stroke.OnInvalidated怎么用？VB.NET Stroke.OnInvalidated使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。
在下文中一共展示了Stroke.OnInvalidated方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1:
' Enumerator that specifies the drawing mode of the stroke.
Public Enum DrawingMode
Solid
StyulusPoints
End Enum 'DrawingMode示例2: DrawCore
Private strokeMode As DrawingMode = DrawingMode.Solid
' Property that specifies whether to draw a solid stroke or the stylus points
Public Property Mode() As DrawingMode
Get
Return strokeMode
End Get
Set(ByVal value As DrawingMode)
If strokeMode <> value Then
strokeMode = value
Me.OnInvalidated(New EventArgs())
End If
End Set
End Property
Protected Overrides Sub DrawCore(ByVal context As System.Windows.Media.DrawingContext, _
ByVal overridedAttributes As DrawingAttributes)
Dim strokeBrush As New SolidColorBrush(overridedAttributes.Color)
' If strokeMode it set to Solid, draw the strokes regularly.
' Otherwise, draw the stylus points.
If strokeMode = DrawingMode.Solid Then
Dim geometry As Geometry = GetGeometry(overridedAttributes)
context.DrawGeometry(strokeBrush, Nothing, geometry)
' strokeMode == DrawingMode.StylusPoints
Else
Dim points As StylusPointCollection
' Get the stylus points used to draw the stroke. The points used depends on
' the value of FitToCurve.
If Me.DrawingAttributes.FitToCurve Then
points = Me.GetBezierStylusPoints()
Else
points = Me.StylusPoints
End If
' Draw a circle at each stylus point.
Dim p As StylusPoint
For Each p In points
context.DrawEllipse(Nothing, New Pen(strokeBrush, 1), CType(p, Point), 5, 5)
Next p
End If
End Sub