IWMSCPPluginAdmin::get_ControlProtocol
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IWMSCPPluginAdmin::get_ControlProtocol
The get_ControlProtocol method retrieves the protocol name.
Syntax
HRESULT get_ControlProtocol( BSTR* pbstrProtocol );
Parameters
pbstrProtocol
[out] Pointer to a BSTR containing the protocol 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_INVALIDARG | 0x80070057 | The pbstrProtocol parameter is NULL. |
Remarks
System plug-ins support the HTTP, MMS, and RTSP protocols.
In Windows Server 2008 operating systems, the MMS protocol is not supported, and Windows Media Services does not provide an MMS Server Control Protocol plug-in.
Example Code
#include <windows.h>
#include <atlbase.h> // Includes CComBSTR and CComVariant.
// To access system plug-in interfaces, the
// entire type library must be imported as shown.
#import "WMSServerTypeLib.dll" no_namespace named_guids \
raw_interfaces_only
// Declare variables and interfaces.
IWMSServer *pServer;
IWMSPlugins *pPlugins;
IWMSPlugin *pPlugin;
IDispatch *pDispatch;
IWMSCPPluginAdmin *pCPAdmin;
HRESULT hr;
CComVariant varIndex;
CComBSTR bstrProtocol;
// 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
// containing control protocol plug-ins.
hr = pServer->get_ControlProtocols(&pPlugins);
if (FAILED(hr)) goto EXIT;
// Retrieve a pointer to the IWMSPlugin interface
// of the plug-in to be configured.
varIndex = "WMS RTSP Server Control Protocol";
hr = pPlugins->get_Item(varIndex, &pPlugin);
if (FAILED(hr)) goto EXIT;
// Retrieve a pointer to the custom interface
// of the plug-in.
hr = pPlugin->get_CustomInterface(&pDispatch);
if (FAILED(hr)) goto EXIT;
// Query the specific administration interface
// for the plug-in.
hr = pDispatch->QueryInterface(IID_IWMSCPPluginAdmin,
(void **)&pCPAdmin);
if (FAILED(hr)) goto EXIT;
// Retrieve the protocol name supported by the plug-in.
hr = pCPAdmin->get_ControlProtocol(&bstrProtocol);
if (FAILED(hr)) goto EXIT;
EXIT:
Requirements
Library: WMSServerTypeLib.dll.
Platform: Windows Server 2003 family, Windows Server 2008 family.
See Also
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