StylusPointCollection Class

StylusPointCollection Class

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Represents a collection of related StylusPoint objects.

System.Object
  System.Windows.DependencyObject
    System.Windows.PresentationFrameworkCollection(Of StylusPoint)
      System.Windows.Input.StylusPointCollection

Namespace:  System.Windows.Input
Assembly:  System.Windows (in System.Windows.dll)
XMLNS for XAML: Not mapped to an xmlns.

'Declaration
Public NotInheritable Class StylusPointCollection _
	Inherits PresentationFrameworkCollection(Of StylusPoint)
<StylusPointCollection>
  oneOrMoreStylusPoints
</StylusPointCollection>

XAML Values

Value

Description

oneOrMoreStylusPoints

One or more StylusPoint object elements.

The StylusPointCollection type exposes the following members.

  NameDescription
Public methodStylusPointCollectionInitializes a new instance of the StylusPointCollection class.
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  NameDescription
Public propertyCountGets the number of elements contained in the PresentationFrameworkCollection(Of T). (Inherited from PresentationFrameworkCollection(Of T).)
Public propertyDispatcherGets the Dispatcher this object is associated with. (Inherited from DependencyObject.)
Public propertyIsFixedSizeGets a value indicating whether the PresentationFrameworkCollection(Of T) has a fixed size. (Inherited from PresentationFrameworkCollection(Of T).)
Public propertyIsReadOnlyGets a value indicating whether the PresentationFrameworkCollection(Of T) is read-only. (Inherited from PresentationFrameworkCollection(Of T).)
Public propertyIsSynchronizedGets a value indicating whether access to the PresentationFrameworkCollection(Of T) is synchronized (thread safe). (Inherited from PresentationFrameworkCollection(Of T).)
Public propertyItemGets or sets the element at the specified index. (Inherited from PresentationFrameworkCollection(Of T).)
Public propertySyncRootGets an object that can be used to synchronize access to the PresentationFrameworkCollection(Of T). (Inherited from PresentationFrameworkCollection(Of T).)
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  NameDescription
Public methodAdd(T)Adds an item to the PresentationFrameworkCollection(Of T). (Inherited from PresentationFrameworkCollection(Of T).)
Public methodAdd(StylusPointCollection)Adds a collection of StylusPoint objects to the collection.
Public methodCheckAccessDetermines whether the calling thread has access to this object. (Inherited from DependencyObject.)
Public methodClearRemoves all items from the PresentationFrameworkCollection(Of T). (Inherited from PresentationFrameworkCollection(Of T).)
Public methodClearValueClears the local value of a dependency property. (Inherited from DependencyObject.)
Public methodContainsDetermines whether the PresentationFrameworkCollection(Of T) contains a specific value. (Inherited from PresentationFrameworkCollection(Of T).)
Public methodCopyTo(T(), Int32)Copies the elements of the PresentationFrameworkCollection(Of T) to an Array, starting at a particular Array index. (Inherited from PresentationFrameworkCollection(Of T).)
Public methodCopyTo(Array, Int32)Copies the elements of the PresentationFrameworkCollection(Of T) to an Array, starting at a particular Array index. (Inherited from PresentationFrameworkCollection(Of T).)
Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetAnimationBaseValueReturns any base value established for a Windows Phone dependency property, which would apply in cases where an animation is not active. (Inherited from DependencyObject.)
Public methodGetEnumeratorReturns an enumerator that iterates through a collection. (Inherited from PresentationFrameworkCollection(Of T).)
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodGetValueReturns the current effective value of a dependency property from a DependencyObject. (Inherited from DependencyObject.)
Public methodIndexOfDetermines the index of a specific item in the PresentationFrameworkCollection(Of T). (Inherited from PresentationFrameworkCollection(Of T).)
Public methodInsertInserts an item to the PresentationFrameworkCollection(Of T) at the specified index. (Inherited from PresentationFrameworkCollection(Of T).)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodReadLocalValueReturns the local value of a dependency property, if a local value is set. (Inherited from DependencyObject.)
Public methodRemoveRemoves the first occurrence of a specific object from the PresentationFrameworkCollection(Of T). (Inherited from PresentationFrameworkCollection(Of T).)
Public methodRemoveAtRemoves the item at the specified index. (Inherited from PresentationFrameworkCollection(Of T).)
Public methodSetValueSets the local value of a dependency property on a DependencyObject. (Inherited from DependencyObject.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
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  NameDescription
Explicit interface implemetationPrivate methodIEnumerable.GetEnumeratorReturns an enumerator that iterates through a collection. (Inherited from PresentationFrameworkCollection(Of T).)
Explicit interface implemetationPrivate methodIList.AddAdds an item to the PresentationFrameworkCollection(Of T). (Inherited from PresentationFrameworkCollection(Of T).)
Explicit interface implemetationPrivate methodIList.ContainsDetermines whether the PresentationFrameworkCollection(Of T) contains a specific value. (Inherited from PresentationFrameworkCollection(Of T).)
Explicit interface implemetationPrivate methodIList.IndexOfDetermines the index of a specific item in the PresentationFrameworkCollection(Of T). (Inherited from PresentationFrameworkCollection(Of T).)
Explicit interface implemetationPrivate methodIList.InsertInserts an item to the PresentationFrameworkCollection(Of T) at the specified index. (Inherited from PresentationFrameworkCollection(Of T).)
Explicit interface implemetationPrivate propertyIList.ItemGets or sets the element at the specified index. (Inherited from PresentationFrameworkCollection(Of T).)
Explicit interface implemetationPrivate methodIList.RemoveRemoves the first occurrence of a specific object from the PresentationFrameworkCollection(Of T). (Inherited from PresentationFrameworkCollection(Of T).)
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The StylusPointCollection keeps track of the StylusPoint objects that define the geometry of the Stroke object.

A StylusPointCollection can belong to more than one Stroke object; however, the only way to do this is by assigning an existing StylusPoints value of one Stroke to another using code.

The XAML syntax for properties that use a StylusPoint is potentially an example of implicit collection syntax, in which you can omit an actual StylusPointCollection object element. However, prepopulating an InkPresenter with strokes and stylus points is not a common technique; usually you start with a blank Strokes collection and capture strokes into the collection as user input with run-time code.

The following code example iterates through stylus points of the strokes drawn in the first InkPresenter control to display its mirror image in the second InkPresenter control.


    Private MyStroke As Stroke

    Public Sub New()
        MyBase.New()
        InitializeComponent()
        SetBoundaryForIP1()
        SetBoundaryForIP2()
    End Sub

    'A new stroke object, MyStroke, is created and is added to the StrokeCollection object
    'of the InkPresenter, MyIP1
    Private Sub MyIP1_MouseLeftButtonDown(ByVal sender As Object, ByVal e As MouseEventArgs)
        MyIP1.CaptureMouse()
        Dim MyStylusPointCollection As StylusPointCollection = New StylusPointCollection
        MyStylusPointCollection.Add(e.StylusDevice.GetStylusPoints(MyIP1))
        MyStroke = New Stroke(MyStylusPointCollection)
        MyIP1.Strokes.Add(MyStroke)
    End Sub

    'StylusPoint objects are collected from the MouseEventArgs and added to MyStroke
    Private Sub MyIP1_MouseMove(ByVal sender As Object, ByVal e As MouseEventArgs)
        If (Not (MyStroke) Is Nothing) Then
            MyStroke.StylusPoints.Add(e.StylusDevice.GetStylusPoints(MyIP1))
        End If
    End Sub

    'MyStroke is completed
    Private Sub MyIP1_LostMouseCapture(ByVal sender As Object, ByVal e As MouseEventArgs)
        MyStroke = Nothing
    End Sub

    'Create the mirror image of the stroke collection in MyIP1 and adding it to MyIP2
    Private Sub BtMirror_Click(ByVal sender As Object, ByVal e As EventArgs)
        'Iterate through the Strokes in the StrokeCollection of MyIP1
        For Each stroke As Stroke In MyIP1.Strokes
            Dim newcollection As StylusPointCollection = New StylusPointCollection
            'Iterate through the stylus points of each stroke in MyIP1
            For Each p As StylusPoint In stroke.StylusPoints
                'Create the mirror image
                Dim newpoint As StylusPoint = New StylusPoint
                newpoint.X = (MyIP1.ActualWidth - p.X)
                newpoint.Y = p.Y
                newcollection.Add(newpoint)
            Next
            'Add the mirror image to MyIP2
            Dim newStroke As Stroke = New Stroke(newcollection)
            MyIP2.Strokes.Add(newStroke)
        Next
    End Sub



Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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