Extends SurfaceImageSource to support scenarios when the content is potentially larger than what can fit on screen and the content must be virtualized to render optimally.
Inheritance
- Object
- DependencyObject
- ImageSource
- SurfaceImageSource
- VirtualSurfaceImageSource
Syntax
Attributes
- ActivatableAttribute(Windows.UI.Xaml.Media.Imaging.IVirtualSurfaceImageSourceFactory, NTDDI_WIN8)
- MarshalingBehaviorAttribute(Agile)
- ThreadingAttribute(Both)
- VersionAttribute(NTDDI_WIN8)
- WebHostHiddenAttribute()
Members
The VirtualSurfaceImageSource class has these types of members:
Constructors
The VirtualSurfaceImageSource class has these constructors.
| Constructor | Description |
|---|---|
| VirtualSurfaceImageSource(Int32, Int32) | Initializes a new instance of the VirtualSurfaceImageSource class, specifying the size of the drawing area. |
| VirtualSurfaceImageSource(Int32, Int32, Boolean) | Initializes a new instance of the VirtualSurfaceImageSource class, specifying the size of the drawing area. |
Methods
The VirtualSurfaceImageSource class has these methods. It also inherits methods from the Object class.
| Method | Description |
|---|---|
| ClearValue | Clears the local value of a dependency property. (Inherited from DependencyObject) |
| GetAnimationBaseValue | Returns any base value established for a dependency property, which would apply in cases where an animation is not active. (Inherited from DependencyObject) |
| GetValue | Returns the current effective value of a dependency property from a DependencyObject. (Inherited from DependencyObject) |
| ReadLocalValue | Returns the local value of a dependency property, if a local value is set. (Inherited from DependencyObject) |
| SetValue | Sets the local value of a dependency property on a DependencyObject. (Inherited from DependencyObject) |
Properties
The VirtualSurfaceImageSource class has these properties.
| Property | Access type | Description |
|---|---|---|
| Read-only | Gets the CoreDispatcher that this object is associated with. (Inherited from DependencyObject) |
Remarks
This class has additional APIs, but those APIs are for Microsoft DirectX interoperation and are not part of the general app programming model otherwise described in this documentation. For example, from the DirectX side, you can call BeginDraw. For more info on how to draw to a VirtualSurfaceImageSource, including sample code, see DirectX and XAML interop.
Requirements
|
Minimum supported client | Windows 8 [Windows Store apps only] |
|---|---|
|
Minimum supported server | Windows Server 2012 [Windows Store apps only] |
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Namespace |
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Metadata |
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See also
Build date: 12/4/2012
