IUccSubscription.Subscribe Method

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Begins the subscription.

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

Syntax

'Declaration
Sub Subscribe ( _
    pContext As UccOperationContext _
)

void Subscribe (
    UccOperationContext pContext
)

void Subscribe (
    UccOperationContext^ pContext
)

void Subscribe (
    UccOperationContext pContext
)

function Subscribe (
    pContext : UccOperationContext
)

Parameters

Remarks

After this method is called an application begins to receive subscribed category instances and their ongoing updates. The notifications come in a chain of events involving those defined in _IUccPresentityEventsand _IUccCategoryContextEvents as well as _IUccCategoryInstanceEvents. The status of completion of this request is returned as an OnSubscribe event defined in _IUccSubscriptionEvents.

Win32 COM/C++ Syntax

HRESULT Subscribe
(
   IUccOperationContext* pContext
);

Note

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, see Trace and Handle Errors in Unified Communications Client API.

Example

The example below sends a subscription request to a Unified Communications server for a subscription object.

//create new operation context coclass
UccOperationContext opCtx = new UccOperationContext();

//create context coclass
IUccContext cx = new UccContext();

//add a named property and string value 
cx.AddNamedProperty("Subscription Type","Contact subscription ");

//initialize operation context with created context
opCtx.Initialize(1, cx);

contactSubscription.Subscribe(opCtx);

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.

Platforms

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

Reference

IUccSubscription Interface
IUccSubscription Members
Microsoft.Office.Interop.UccApi Namespace