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D3DImage.CopyBackBuffer Method

  • Reference

Definition

Namespace:
System.Windows.Interop
Assembly:
PresentationCore.dll

Creates a software copy of the D3DImage.

protected public:
 virtual System::Windows::Media::Imaging::BitmapSource ^ CopyBackBuffer();
[System.Security.SecurityCritical]
[System.Security.SecurityTreatAsSafe]
protected internal virtual System.Windows.Media.Imaging.BitmapSource CopyBackBuffer ();
protected internal virtual System.Windows.Media.Imaging.BitmapSource CopyBackBuffer ();
[<System.Security.SecurityCritical>]
[<System.Security.SecurityTreatAsSafe>]
abstract member CopyBackBuffer : unit -> System.Windows.Media.Imaging.BitmapSource
override this.CopyBackBuffer : unit -> System.Windows.Media.Imaging.BitmapSource
abstract member CopyBackBuffer : unit -> System.Windows.Media.Imaging.BitmapSource
override this.CopyBackBuffer : unit -> System.Windows.Media.Imaging.BitmapSource
Protected Friend Overridable Function CopyBackBuffer () As BitmapSource

Returns

BitmapSource

A BitmapSource that is a software copy of the current state of the back buffer; otherwise, null if the back buffer cannot be read.

Attributes
SecurityCriticalAttribute SecurityTreatAsSafeAttribute

Remarks

The CopyBackBuffer method is called by clients such as the printing system and the RenderTargetBitmap class.

Optionally override the CopyBackBuffer method to implement custom logic and return a different BitmapSource. For example, you can return a placeholder BitmapSource if the default CopyBackBuffer implementation returns null.

Applies to

See also