IWMSPlugins::get_Category
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IWMSPlugins::get_Category
The get_Category method retrieves the category name for the IWMSPlugins collection.
Syntax
HRESULT get_Category( BSTR* pVal );
Parameters
pVal
[out] Pointer to a BSTR containing the category name.
Return Values
If the method succeeds, it returns S_OK. If it fails, it returns an HRESULT error code.
| Return code | Number | Description |
| E_OUTOFMEMORY | 0x8007000E | There is insufficient memory to complete the function. |
| E_POINTER | 0x80004003 | pVal is a NULL pointer argument. |
Remarks
The category identifies the general functionality of the plug-in. The following category names can be returned:
- Authentication
- Broadcast Data Sink
- Cache Proxy
- Control Protocol
- Data Source
- Event Notification and Authorization
- Media Parser
- Playlist Parser
- Stream Filter
- Unicast Data Sink
Example Code
#include <windows.h>
#include <atlbase.h> // Includes CComBSTR.
#include "wmsserver.h"
// Declare variables and interfaces.
IWMSServer *pServer;
IWMSPlugins *pPlugins;
HRESULT hr;
CComBSTR bstrText;
// 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.
hr = pServer->get_CacheProxy(&pPlugins);
if (FAILED(hr)) goto EXIT;
// Retrieve the category name for this
// collection of plug-ins.
hr = pPlugins->get_Category(&bstrText);
if (FAILED(hr)) goto EXIT;
EXIT:
// TODO: Release temporary COM objects and uninitialize COM.
Requirements
Header: wmsserver.h.
Library: WMSServerTypeLib.dll.
Platform: Windows ServerĀ 2003 family, Windows ServerĀ 2008 family.
See Also
- IWMSPlugins Interface
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