StrokeCollection.GetBounds Method

Return Value

Type: System.Windows.Rect
A Rect that contains the bounds of the strokes in the StrokeCollection.

    Private MyStroke As Stroke

    Private MyRectangle As Rectangle = Nothing

    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 of the StrokeCollection is used to draw a rectangular boundary around the StrokeCollection
    Private Sub MyIP_LostMouseCapture(ByVal sender As Object, ByVal e As MouseEventArgs)
        Dim MyRect As Rect = New Rect
        MyRect = MyIP.Strokes.GetBounds
        If (MyRectangle Is Nothing) Then
            MyRectangle = New Rectangle
            MyIP.Children.Add(MyRectangle)
        End If
        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
        MyStroke = Nothing
    End Sub

Stroke MyStroke;
Rectangle MyRectangle = null;

//A new stroke object named MyStroke is created. MyStroke is added to the StrokeCollection of the InkPresenter named MyIP
private void MyIP_MouseLeftButtonDown(object sender, MouseEventArgs e)
{
    MyIP.CaptureMouse();
    StylusPointCollection MyStylusPointCollection = new StylusPointCollection();
    MyStylusPointCollection.Add(e.StylusDevice.GetStylusPoints(MyIP));
    MyStroke = new Stroke(MyStylusPointCollection);

    MyIP.Strokes.Add(MyStroke);
}

//StylusPoint objects are collected from the MouseEventArgs and added to MyStroke
private void MyIP_MouseMove(object sender, MouseEventArgs e)
{
    if (MyStroke != null)
        MyStroke.StylusPoints.Add(e.StylusDevice.GetStylusPoints(MyIP));
}

//GetBounds() method of the StrokeCollection is used to draw a rectangular boundary around the StrokeCollection
private void MyIP_LostMouseCapture(object sender, MouseEventArgs e)
{
    Rect MyRect = new Rect();
    MyRect = MyIP.Strokes.GetBounds();
    if (MyRectangle == null)
    {
        MyRectangle = new Rectangle();
        MyIP.Children.Add(MyRectangle);
    }
    MyRectangle.Height = MyRect.Height;
    MyRectangle.Width = MyRect.Width;
    Thickness MyThickness = new Thickness(MyRect.X, MyRect.Top, 0, 0);
    MyRectangle.Margin = MyThickness;
    SolidColorBrush MyBrush = new SolidColorBrush(Colors.Black);
    MyRectangle.Stroke = MyBrush;

    MyStroke = null;
}