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IDeviceTopology::GetSubunitCount
The GetSubunitCount method gets the number of subunits in the device topology.
HRESULT GetSubunitCount( UINT *pCount );
Parameters
pCount
[out] Pointer to a UINT variable into which the method writes the subunit count (the number of subunits in the device topology).
Return Value
If the method succeeds, it returns S_OK. If it fails, possible return codes include, but are not limited to, the values shown in the following table.
| Return code | Description |
| E_POINTER | Pointer pCount is NULL. |
Requirements
Client: Windows Vista
Header: Include Devicetopology.h.
See Also
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