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| Microsoft DirectShow 9.0 |
IAMExtDevice::get_DevicePort
The get_DevicePort method retrieves the communication port to which the external device is connected.
Syntax
HRESULT get_DevicePort( long *pDevicePort );
Parameters
pDevicePort
[out] 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 Values
When this method succeeds, it returns S_OK. Otherwise it returns an HRESULT error code.
DV Implementation
The MSDV driver returns the value DEV_PORT_1394. The UVC driver returns the value DEV_PORT_USB.
Requirements
Header: Declared in Strmif.h; include Dshow.h.
Library: Use Strmiids.lib.
See Also