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D3DImage.CopyBackBuffer Method

Creates a software copy of the D3DImage.

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

protected internal virtual BitmapSource CopyBackBuffer()

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.

.NET Framework

Supported in: 4, 3.5 SP1, 3.0 SP2

.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.
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