Windows apps
Collapse the table of content
Expand the table of content
Information
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

Marshal::GetUniqueObjectForIUnknown Method (IntPtr)

 

Creates a unique Runtime Callable Wrapper (RCW) object for a given IUnknown interface.

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

public:
[SecurityCriticalAttribute]
static Object^ GetUniqueObjectForIUnknown(
	IntPtr unknown
)

Parameters

unknown
Type: System::IntPtr

A managed pointer to an IUnknown interface.

Return Value

Type: System::Object^

A unique RCW for the specified IUnknown interface.

The GetUniqueObjectForIUnknown method ensures that you receive a unique RCW, because it does not match an IUnknown pointer to an existing object. Use this method when you have to create a unique RCW that is not impacted by other code that calls the ReleaseComObject method.

SecurityCriticalAttribute

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

Universal Windows Platform
Available since 8
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
Return to top
Show:
© 2017 Microsoft