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Marshal.CreateAggregatedObject Method (IntPtr, Object)

Aggregates a managed object with the specified COM object.

Namespace:  System.Runtime.InteropServices
Assembly:  mscorlib (in mscorlib.dll)

public static IntPtr CreateAggregatedObject(
	IntPtr pOuter,
	Object o


Type: System.IntPtr

The outer IUnknown pointer.

Type: System.Object

An object to aggregate.

Return Value

Type: System.IntPtr
The inner IUnknown pointer of the managed object.


o is a Windows Runtime object.

The CreateAggregatedObject method aggregates the inner managed pointer of a managed object with the specified outer pointer, and then returns an inner IUnknown pointer of the managed object.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

Obsolete (compiler warning) in Windows Phone 8.1

  • SecurityCriticalAttribute 

    requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.

Windows Phone 8.1, 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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