IPortableDevice::GetPnPDeviceID
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IPortableDevice::GetPnPDeviceID
The GetPnPDeviceID method retrieves the Plug and Play (PnP) device identifier that the application used to open the device.
Syntax
HRESULT GetPnPDeviceID( LPCWSTR* ppszPnPDeviceID );
Parameters
ppszPnPDeviceID
[out] Pointer to a null-terminated string that contains the Plug and Play ID string for the device.
Return Values
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
| S_OK | The method succeeded. |
| E_WPD_DEVICE_ALREADY_OPENED | The IPortableDevice::Open method has not been called yet for this device. |
Remarks
After the application is through using the string returned by this method, it must call the CoTaskMemFree function to free the string.
The ppszPnPDeviceID argument must not be set to NULL.
Requirements
Header: Defined in PortableDeviceApi.h
Library: PortableDeviceGUIDs.lib
See Also
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