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ManipulationPivot Class

Specifies how a rotation occurs with one point of user input.


Namespace:  System.Windows.Input
Assembly:  PresentationCore (in PresentationCore.dll)

public class ManipulationPivot
<ManipulationPivot .../>

The ManipulationPivot type exposes the following members.

Public methodManipulationPivot()Initializes a new instance of the ManipulationPivot class.
Public methodManipulationPivot(Point, Double)Initializes a new instance of the ManipulationPivot class with the specified point of a single-point manipulation.

Public propertyCenterGets or sets the center of a single-point manipulation.
Public propertyRadiusGets or sets the area around the pivot that is used to determine how much rotation and translation occurs when a single point of contact initiates the manipulation.

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 it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)

The ManipulationStartingEventArgs.Pivot property is a ManipulationPivot. When you set Pivot in an event handler for the ManipulationStarting event, the manipulation will contain rotation data when the user uses one finger during a manipulation. This is to simulate real-world situations where you can use one finger to rotate an object, such as a piece of paper on a table. If the Pivot is null, the user must use two fingers to cause rotation.

The following example shows an event handler for the ManipulationStarting event and sets the ManipulationStartingEventArgs.Pivot property. To test this example, follow the steps in Walkthrough: Creating Your First Touch Application and replace the code in step 4 with this code.

void Window_ManipulationStarting(object sender, ManipulationStartingEventArgs e)
    // Set the ManipulationPivot so that the element rotates as it is
    // moved with one finger.
    FrameworkElement element = e.OriginalSource as FrameworkElement;
    ManipulationPivot pivot = new ManipulationPivot();
    pivot.Center = new Point(element.ActualWidth / 2, element.ActualHeight / 2);
    pivot.Radius = 20;
    e.Pivot = pivot;

    e.ManipulationContainer = this;
    e.Handled = true;

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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