Home Library Learn Downloads Support Community
Sign in | United States - English | |
This topic has not yet been rated - Rate this topic

CompositionTarget Class

.NET Framework 4

Represents the display surface of your application.

System.Object
  System.Windows.Threading.DispatcherObject
    System.Windows.Media.CompositionTarget
      System.Windows.Interop.HwndTarget
      System.Windows.Media.VisualTarget

Namespace:  System.Windows.Media
Assembly:  PresentationCore (in PresentationCore.dll)
C#
C++
F#
VB
Copy 
[UIPermissionAttribute(SecurityAction.InheritanceDemand, Window = UIPermissionWindow.AllWindows)]
public abstract class CompositionTarget : DispatcherObject, 
	IDisposable

The CompositionTarget type exposes the following members.

  Name Description
Public property Dispatcher Gets the Dispatcher this DispatcherObject is associated with. (Inherited from DispatcherObject.)
Public property RootVisual Gets or sets the root visual of the CompositionTarget.
Public property TransformFromDevice Gets a matrix that can be used to transform coordinates from the rendering destination device to this target.
Public property TransformToDevice Gets a matrix that can be used to transform coordinates from this target to the rendering destination device.
Top
  Name Description
Public method CheckAccess Determines whether the calling thread has access to this DispatcherObject. (Inherited from DispatcherObject.)
Public method Dispose Disposes CompositionTarget.
Public method Equals(Object) Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected method Finalize Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public method GetHashCode Serves as a hash function for a particular type. (Inherited from Object.)
Public method GetType Gets the Type of the current instance. (Inherited from Object.)
Protected method MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Public method ToString Returns a string that represents the current object. (Inherited from Object.)
Public method VerifyAccess Enforces that the calling thread has access to this DispatcherObject. (Inherited from DispatcherObject.)
Top
  Name Description
Public event Static member Rendering Occurs just before the objects in the composition tree are rendered.
Top

CompositionTarget is a class that represents the display surface on which your application is being drawn. The WPF animation engine provides many features for creating frame-based animation. However, there are application scenarios in which you need control over rendering on a per frame basis. The CompositionTarget object provides the ability to create custom animations based on a per-frame callback.

Note Note

For a complete code sample using CompositionTarget, see Using the CompositionTarget Sample.

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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.
Did you find this helpful?
(1500 characters remaining)
Community Content Add
Annotations FAQ