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_IUccGroupEvents.OnGroupExtensionChanged Method

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Raised when the application-specific data about a group is changed.

Namespace: Microsoft.Office.Interop.UccApi
Assembly: Microsoft.Office.Interop.UccApi (in

void OnGroupExtensionChanged (
	UccGroup pEventSource,
	Object pEventData
void OnGroupExtensionChanged (
	UccGroup pEventSource, 
	Object pEventData
function OnGroupExtensionChanged (
	pEventSource : UccGroup, 
	pEventData : Object



A value of the IUccGroup* (UccGroup, for a .NET application) type. This specifies the group whose application-specific data is changed.


A value of the IUnknown* (object, for a .NET application) type. This is reserved for future use and is currently set to NULL.

Win32 COM/C++ Syntax

HRESULT OnGroupExtensionChanged
   IUccGroup* pEventSource,
   IUnknown* pEventData
In a Win32 application, the return value of a method or property is always an HRESULT value indicating the status of the call to the interface member. Any result of the operation is returned as a parameter marked with the [out, retval] attribute. In contrast, in a .NET application the HRESULT value indicating an error condition is returned as a COM exception and the [out, retval] parameter becomes the return value. For the UCC API-defined HRESULT values, Trace and Handle Errors in Unified Communications Client API .

All public static (Shared in Visual Basic) members of this type are thread-safe. Instance members are not guaranteed to be thread-safe.

Development Platforms

Windows XP Professional with Service Pack 2 (SP2), Windows Server 2000 with Service Pack 4, Windows Server 2003, Windows Vista Ultimate Edition, Windows Vista Business Edition, Windows Vista Enterprise Edition

Target Platforms