usbd_languages_descriptor()

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 );

Arguments:

device

An opaque handle used to identify the USB device.

node

Indicates the descriptor's location for rooting future requests.

Library:

libusbdi

Description:

The usbd_languages_descriptor() function lets you obtain the table of supported language IDs for the device.

The usbd_string_descriptor_t structure looks like this:

typedef struct usbd_string_descriptor {
    uint8_t                  bLength;
    uint8_t                  bDescriptorType;
    uint16_t                 bString[1];
} usbd_string_descriptor_t;

Returns:

A pointer usbd_string_descriptor_t on success, or NULL on error.

Classification:

QNX Neutrino, QNX 4

See also:

usbd_args_lookup(), usbd_configuration_descriptor(), usbd_device_lookup(), usbd_device_extra(), usbd_device_descriptor(), usbd_endpoint_descriptor(), usbd_hcd_info(), usbd_hub_descriptor(), usbd_interface_descriptor(), usbd_parse_descriptors(), usbd_string(), usbd_urb_status()