UccPresenceContactCardInstance Class

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Illustrates the implementation of a contact card category instance. The class cannot be co-created.

Namespace: Microsoft.Office.Interop.UccApi
Assembly: Microsoft.Office.Interop.UccApi (in microsoft.office.interop.uccapi.dll)


Public MustInherit Class UccPresenceContactCardInstance
public abstract class UccPresenceContactCardInstance
public ref class UccPresenceContactCardInstance abstract
public abstract class UccPresenceContactCardInstance
public abstract class UccPresenceContactCardInstance


This class implements the IUccPresenceContactCardInstance and IUccCategoryInstance interfaces. The default interface is IUccPresenceContactCardInstance. An application obtains the default interface on the class instance directly. Non-default interfaces, if any, can be obtained by calling QueryInterface on the default interface. An instance of this class is also a source of the events defined in the _IUccCategoryInstanceEvents dispinterface. This class cannot be co-created. It is intended to illustrate that the implemented interfaces can be queried from each other as well as the events raised in an instance of this class.

Win32 COM/C++ Syntax

coclass UccPresenceContactCardInstance
   [default] interface IUccPresenceContactCardInstance;
   interface IUccCategoryInstance;
   [default, source] dispinterface _IUccCategoryInstanceEvents;

Inheritance Hierarchy



The following simple event handler compares the category context name of the received category instance to "contactCard". If the values match, the example obtains an IUccPresenceContactCardInstance interface from the event source.

/// <summary>
/// this event handler is called when a subscribed category instance
/// value is changed. This method handles category instance change
/// events for category instances across all subscribed category context
/// </summary>
/// <param name="pEventSource">category context whose instance value changed</param>
/// <param name="pEventData">event specific data</param>
void _IUccCategoryInstanceEvents.OnCategoryInstanceValueModified(
   IUccCategoryInstance pEventSource, object pEventData)
   StringComparer strComparer = StringComparer.Create(

   //process the updated "contactCard" category instance
   if (strComparer.Compare(
   "contactCard") == 0)
      IUccPresenceContactCardInstance card = pEventSource as IUccPresenceContactCardInstance;

Thread Safety

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

See Also


UccPresenceContactCardInstance Members
Microsoft.Office.Interop.UccApi Namespace