IDeviceTopology::GetSubunitCount method (devicetopology.h)
The GetSubunitCount method gets the number of subunits in the device topology.
Syntax
HRESULT GetSubunitCount(
[out] UINT *pCount
);
Parameters
[out] pCount
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 |
|---|---|
|
Pointer pCount is NULL. |
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista [desktop apps only] |
| Minimum supported server | Windows Server 2008 [desktop apps only] |
| Target Platform | Windows |
| Header | devicetopology.h |