This documentation is archived and is not being maintained.

CustomQueryInterfaceResult Enumeration

Provides return values for the GetInterface method.

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

public enum CustomQueryInterfaceResult

Member nameDescription
HandledThe interface pointer that is returned from the GetInterface method can be used as the result of IUnknown::QueryInterface.
NotHandledThe custom QueryInterface was not used. Instead, the default implementation of IUnknown::QueryInterface should be used.
FailedThe interface for a specific interface ID is not available. In this case, the returned interface is null. E_NOINTERFACE is returned to the caller of IUnknown::QueryInterface.

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

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.