Belkin F8E211 Guia do Utilizador descarregar pdf (Página 78)

usbd languages descriptor()  2006, QNX Software Systems GmbH & Co.

KG.

Get the table of supported LANGIDs for the given device

Synopsis:

#include <sys/usbdi.h>

usbd

string descriptor t

*usbd

languages descriptor(

struct usbd

device *device,

struct usbd

desc node **node );

Description:

The usbd languages descriptor() function lets you obtain the table of

supported language IDs for the device.

device An opaque handle used to identify the USB device.

node Indicates the descriptor’s location for rooting future

requests.

The

usbd string descriptor t structure looks like this:

typedef struct usbd string descriptor {

uint8 bLength;

uint8 bDescriptorType;

uint16 bString[1];

} usbd

string descriptor t;

Returns:

A pointer usbd string descriptor t on success, NULL on

error.

Classiﬁcation:

QNX Neutrino, QNX 4

66 Chapter 4 USB Library Reference November 2, 2006

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Belkin F8E211 Guia do Utilizador Página 78