IWMSDiagnosticEvents::get_length

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IWMSDiagnosticEvents::get_length

The get_length method retrieves the number of IWMSDiagnosticEvent interfaces contained in the IWMSDiagnosticEvents collection.

Syntax

  HRESULT get_length(
  long*  pVal
);

Parameters

pVal

[out] Pointer to a long containing the number of IWMSDiagnosticEvent interfaces in the collection.

Return Values

If the method succeeds, it returns S_OK. If it fails, it returns an HRESULT error code.

Return code Number Description
E_POINTER 0x80004003 pVal is a NULL pointer argument.

Remarks

The collection can contain a maximum of 100 IWMSDiagnosticEvent interfaces. When this limit is reached, the oldest interface in the collection is replaced by the newest. Each IWMSDiagnosticEvent interface that describes a unique server or publishing point limit is included only once in the collection, but the time and date are updated to reflect the most recent occurrence. For more information, see IWMSDiagnosticEvent::get_Time and IWMSDiagnosticEvent::get_NumberofOccurrences.

This is the JScript version of the IWMSDiagnosticEvents::get_Count method. It is included for developers more comfortable with JScript syntax.

Example Code

#include <windows.h>
#include <atlbase.h>    // Includes CComVariant.
#include "wmsserver.h"

// Declare variables and interfaces.
IWMSServer              *pServer;
IWMSDiagnosticEvents    *pDiagnosticEvents;

HRESULT         hr;
CComVariant     varIndex;
long            lCount;

// Initialize the COM library and retrieve a pointer
// to an IWMSServer interface.
hr = CoInitialize(NULL);
hr = CoCreateInstance(CLSID_WMSServer,
                      NULL,
                      CLSCTX_ALL,
                      IID_IWMSServer,
                      (void **)&pServer);
if (FAILED(hr)) goto EXIT;

// Retrieve a pointer to the IWMSDiagnosticEvents
// interface and retrieve the total count of events.
hr = pServer->get_DiagnosticEvents(&pDiagnosticEvents);
if (FAILED(hr)) goto EXIT;
hr = pDiagnosticEvents->get_length(&lCount);
if (FAILED(hr)) goto EXIT;

EXIT:
    // TODO: Release temporary COM objects and uninitialize COM.

Requirements

Header: wmsserver.h.

Library: WMSServerTypeLib.dll.

Platform: Windows Server 2003 family, Windows Server 2008 family.

See Also

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