Windows Dev Center

IMMDeviceCollection::GetCount method

The GetCount method retrieves a count of the devices in the device collection.

Syntax


HRESULT GetCount(
  [out] UINT *pcDevices
);

Parameters

pcDevices [out]

Pointer to a UINT variable into which the method writes the number of devices in the device collection.

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 codeDescription
E_POINTER

Parameter pcDevices is NULL.

 

Remarks

For a code example that calls the GetCount method, see Device Properties.

Requirements

Minimum supported client

Windows Vista [desktop apps only]

Minimum supported server

Windows Server 2008 [desktop apps only]

Header

Mmdeviceapi.h

See also

IMMDeviceCollection Interface

 

 

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