TouchDevice Class
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Identifies a "device" that produced the touch point. This is not a literal device, instead it distinguishes touch points through a down/move/up sequence.
Inheritance Hierarchy
System..::.Object
System.Windows..::.DependencyObject
System.Windows.Input..::.TouchDevice
Namespace: System.Windows.Input
Assembly: System.Windows (in System.Windows.dll)
Syntax
<ContentPropertyAttribute("DirectlyOver", True)> _
Public NotInheritable Class TouchDevice _
Inherits DependencyObject
[ContentPropertyAttribute("DirectlyOver", true)]
public sealed class TouchDevice : DependencyObject
The TouchDevice type exposes the following members.
Constructors
| Name | Description | |
|---|---|---|
.gif "Public method") |
TouchDevice | Initializes a new instance of the TouchDevice class. |
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Properties
| Name | Description | |
|---|---|---|
.gif "Public property") |
DirectlyOver | Gets the topmost UIElement object that the mouse is over at the time that this touch point was produced. |
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Dispatcher | Gets the Dispatcher this object is associated with. (Inherited from DependencyObject.) |
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Id | Gets a unique ID as provided by the operating system for a particular touch device. |
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Methods
| Name | Description | |
|---|---|---|
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CheckAccess | Determines whether the calling thread has access to this object. (Inherited from DependencyObject.) |
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ClearValue | Clears the local value of a dependency property. (Inherited from DependencyObject.) |
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Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
.gif "Protected method") |
Finalize | Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.) |
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GetAnimationBaseValue | Returns any base value established for a Windows Phone dependency property, which would apply in cases where an animation is not active. (Inherited from DependencyObject.) |
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GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
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GetType | Gets the Type of the current instance. (Inherited from Object.) |
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GetValue | Returns the current effective value of a dependency property from a DependencyObject. (Inherited from DependencyObject.) |
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MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
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ReadLocalValue | Returns the local value of a dependency property, if a local value is set. (Inherited from DependencyObject.) |
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SetValue | Sets the local value of a dependency property on a DependencyObject. (Inherited from DependencyObject.) |
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ToString | Returns a string that represents the current object. (Inherited from Object.) |
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Fields
| Name | Description | |
|---|---|---|
.gif "Public field") .gif "Static member") |
DirectlyOverProperty | Identifies the DirectlyOver dependency property. |
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IdProperty | Identifies the Id dependency property. |
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Remarks
The Id of the TouchDevice is based on the underlying dwID value of the touch message at operating system level.
Version Information
Windows Phone OS
Supported in: 8.1, 8.0, 7.1, 7.0
Platforms
Windows Phone
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.