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IFunctionDiscovery::GetInstance method (functiondiscoveryapi.h)

  • Article

[Function Discovery is available for use in the operating systems specified in the Requirements section. It may be altered or unavailable in subsequent versions.]

Gets the specified function instance, based on identifier.

Syntax

HRESULT GetInstance(
  [in]  const WCHAR       *pszFunctionInstanceIdentity,
  [out] IFunctionInstance **ppIFunctionInstance
);

Parameters

[in] pszFunctionInstanceIdentity

The identifier of the function instance (see GetID).

[out] ppIFunctionInstance

A pointer to an IFunctionInstance interface pointer used to return the interface.

Return value

Possible return values include, but are not limited to, the following.

Return code/value Description
S_OK
 The method completed successfully.
E_INVALIDARG
 The value of pszFunctionInstanceIdentity is invalid.
E_OUTOFMEMORY
 The method is unable to allocate the memory required to perform this operation.
HRESULT_FROM_WIN32(ERROR_OBJECT_NOT_FOUND)
0x800710d8
 The function instance represented by the specified ID does not exist on this computer.
E_PENDING
 The call was executed for a provider that returns results asynchronously.

Remarks

Some function discovery providers return their query results with the IFunctionDiscoveryNotification interface. GetInstance does not find function instances that are returned in this way and will fail with E_PENDING. It is recommended that clients use the CreateInstanceQuery method of the IFunctionDiscovery interface to find function instances for such providers.

Requirements

Requirement Value
Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2008 [desktop apps only]
Target Platform Windows
Header functiondiscoveryapi.h
DLL FunDisc.dll

See also

IFunctionDiscovery