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IWMSPlugins::get_Item
The get_Item method retrieves an IWMSPlugin interface from the IWMSPlugins collection.
Syntax
HRESULT get_Item( const VARIANT varIndex, IWMSPlugin** pVal );
Parameters
varIndex
[in] VARIANT containing the index or name of the plug-in.
pVal
[out] Pointer to a pointer to an IWMSPlugin interface. This method calls AddRef internally. To avoid memory leaks, you must call Release when you are finished using the interface.
Return Values
If the method succeeds, it returns S_OK. If it fails, it returns an HRESULT error code.
| Return code | Number | Description |
| DISP_E_BADINDEX | 0x8002000B | varIndex is an invalid index location. |
| E_POINTER | 0x80004003 | pVal is a NULL pointer argument. |
Remarks
You can use the IWMSPlugin::get_Name method to find the plug-in name.
Example Code
#include <windows.h>
#include <atlbase.h> // Includes CComBSTR and CComVariant.
#include "wmsserver.h"
// Declare variables and interfaces.
IWMSServer *pServer;
IWMSPlugins *pPlugins;
IWMSPlugin *pPlugin;
HRESULT hr;
CComVariant varIndex;
CComBSTR bstrText;
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 an IWMSPlugins interface
// and retrieve the total count of plug-ins.
hr = pServer->get_EventHandlers(&pPlugins);
if (FAILED(hr)) goto EXIT;
hr = pPlugins->get_Count(&lCount);
if (FAILED(hr)) goto EXIT;
// Retrieve information about each plug-in.
for (long x = 0; x < lCount; x++)
{
varIndex = x;
hr = pPlugins->get_Item(varIndex, &pPlugin);
if (FAILED(hr)) goto EXIT;
// Retrieve the name of the plug-in.
hr = pPlugin->get_Name(&bstrText);
if (FAILED(hr)) goto EXIT;
// Release temporary COM objects.
pPlugin->Release();
}
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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