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InteropBitmap.Invalidate Method (Nullable<Int32Rect>)

.NET Framework 4.5

Forces the specified area of the hosted non-WPF UI to be rendered.

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

public void Invalidate(
	Nullable<Int32Rect> dirtyRect


Type: System.Nullable<Int32Rect>

The area of the hosted non-WPF UI to be rendered. If this parameter is null, the entire non-WPF UI is rendered.


The InteropBitmap instance is frozen and cannot have its members written to.

.NET Framework

Supported in: 4.6, 4.5

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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