IFunctionInstance::GetProviderInstanceID method (functiondiscoveryapi.h)

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[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 identifier string for the provider instance. This string is the unique identifier for the provider instance.

Syntax

HRESULT GetProviderInstanceID(
  [out] WCHAR **ppszCoMemProviderInstanceIdentity
);

Parameters

[out] ppszCoMemProviderInstanceIdentity

The provider instance identifier string. For root devices, this string has the same value as PKEY_PNPX_GlobalIdentity.

Be sure to free this buffer using CoTaskMemFree.

Return value

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

Return code Description
S_OK
 The method completed successfully.
E_INVALIDARG
 The value of ppszCoMemProviderInstanceID is invalid.
E_OUTOFMEMORY
 The method is unable to allocate the memory required to perform this operation.

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

IFunctionInstance