Retrieves the bounding box for the Stroke object.
Assembly: System.Windows (in System.Windows.dll)
Do not attempt to set values in the returned Rect. It should be used for reference only.
There are various scenarios for using the returned Rect. The Rect can be used as input for a RectangleGeometry that displays a bounding box in the user interface, or it can be used to check for intersecting strokes or other types of hit-testing.
The following code example demonstrates the method of the Stroke object.
Private MyStroke As Stroke Public Sub New() MyBase.New() InitializeComponent() SetBoundary() End Sub 'A new stroke object, MyStroke, is created and is added to the StrokeCollection object 'of the InkPresenter, MyIP Private Sub MyIP_MouseLeftButtonDown(ByVal sender As Object, ByVal e As MouseEventArgs) MyIP.CaptureMouse() Dim MyStylusPointCollection As StylusPointCollection = New StylusPointCollection MyStylusPointCollection.Add(e.StylusDevice.GetStylusPoints(MyIP)) MyStroke = New Stroke(MyStylusPointCollection) MyIP.Strokes.Add(MyStroke) End Sub 'StylusPoint objects are collected from the MouseEventArgs and added to MyStroke Private Sub MyIP_MouseMove(ByVal sender As Object, ByVal e As MouseEventArgs) If (Not (MyStroke) Is Nothing) Then MyStroke.StylusPoints.Add(e.StylusDevice.GetStylusPoints(MyIP)) End If End Sub 'GetBounds() method is used to draw a rectangular boundary on every stroke 'as soon as the stroke is completed. Private Sub MyIP_LostMouseCapture(ByVal sender As Object, ByVal e As MouseEventArgs) Dim MyRect As Rect = New Rect MyRect = MyStroke.GetBounds Dim MyRectangle As Rectangle = New Rectangle MyRectangle.Height = MyRect.Height MyRectangle.Width = MyRect.Width Dim MyThickness As Thickness = New Thickness(MyRect.X, MyRect.Top, 0, 0) MyRectangle.Margin = MyThickness Dim MyBrush As SolidColorBrush = New SolidColorBrush(Colors.Black) MyRectangle.Stroke = MyBrush MyIP.Children.Add(MyRectangle) MyStroke = Nothing End Sub
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