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IAMExtDevice::get_DevicePort method (strmif.h)

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[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The get_DevicePort method retrieves the communication port to which the external device is connected.

Syntax

HRESULT get_DevicePort(
  [out] long *pDevicePort
);

Parameters

[out] pDevicePort

Pointer to a long integer that receives one of the following values, indicating the port to which the device is connected:

Value Description
DEV_PORT_1394 IEEE 1394 Bus
DEV_PORT_ARTI ARTI driver
DEV_PORT_COM1 COM1
DEV_PORT_COM2 COM2
DEV_PORT_COM3 COM3
DEV_PORT_COM4 COM4
DEV_PORT_DIAQ Diaquest driver
DEV_PORT_SIM Simulation port
DEV_PORT_USB Universal Serial Bus

Return value

When this method succeeds, it returns S_OK. Otherwise it returns an HRESULT error code.

Requirements

Requirement Value
Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Target Platform Windows
Header strmif.h (include Dshow.h)
Library Strmiids.lib

See also

Error and Success Codes

IAMExtDevice Interface