Method
GUsbDeviceget_interface
since: 0.2.8
Declaration
GUsbInterface*
g_usb_device_get_interface (
GUsbDevice* self,
guint8 class_id,
guint8 subclass_id,
guint8 protocol_id,
GError** error
)
Description
Gets the first interface that matches the vendor class interface descriptor.
If you want to find all the interfaces that match (there may be other
‘alternate’ interfaces you have to use g_usb_device_get_interfaces()
and
check each one manally.
Available since: 0.2.8
Parameters
class_id
-
Type:
guint8
A device class, e.g. 0xff for VENDOR.
subclass_id
-
Type:
guint8
A device subclass.
protocol_id
-
Type:
guint8
A protocol number.
error
-
Type:
GError **
The return location for a recoverable error.
The argument can be NULL
.If the return location is not NULL
, then you must initialize it to aNULL
GError*
.The argument will left initialized to NULL
by the method if there are no errors.In case of error, the argument will be set to a newly allocated GError
; the caller will take ownership of the data, and be responsible for freeing it.
Return value
Type: GUsbInterface
A GUsbInterface
or NULL
for not found.
The caller of the method takes ownership of the data, and is responsible for freeing it. |