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D3DImage.CopyBackBuffer Method

Updated: July 2008

Creates a software copy of the D3DImage.

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

protected internal virtual BitmapSource CopyBackBuffer()
You cannot use methods in XAML.

Return Value

Type: System.Windows.Media.Imaging.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.

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.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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

.NET Framework

Supported in: 3.5 SP1, 3.0 SP2

Date

History

Reason

July 2008

Added topic for new class.

SP1 feature change.

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