NAME

inquire_input_capabilities − inquire the capabilities of the physical input device specified by fildes. 

SYNOPSIS

C SYNTAX

void inquire_input_capabilities(fildes,events_queue,
sample_while_request,number_of_locators,number_of_valuators,
number_of_choice_devices,number_of_string_devices);
 int fildes,*events_queue,*sample_while_request;
int *number_of_locators,*number_of_valuators;
int *number_of_choice_devices,*number_of_string_devices;

FORTRAN77 SYNTAX

       subroutine inquire_input_capabilities(fildes,
       event_queue,sample_while_request,number_of_locators,
       number_of_valuators,number_of_choice_devices,
       number_of_string_devices)
        integer*4 fildes,event_queue,sample_while_request
       integer*4 number_of_locators,number_of_valuators
       integer*4 number_of_choice_devices
       integer*4 number_of_string_devices

PASCAL SYNTAX

procedure inquire_input_capabilities(fildes:integer;
var event_queue,sample_while_request,number_of_locators,
number_of_valuators,number_of_choice_devices,
number_of_string_devices:integer);

HP-UX COMPATIBILITY

Level: HP-UX/STANDARD

Origin: HP

DESCRIPTION

INPUT PARAMETER

fildes
is an integer file descriptor returned by gopen when an I/O path to a graphics device is opened. 

OUTPUT PARAMETERS

events_queue
is set to the defined value TRUE (1) if an event queue is supported, FALSE otherwise.
sample_while_request
is set to the defined value TRUE (1) if the device may be sampled while a request is pending, FALSE otherwise.
number_of_locators
is set to the number of locator devices supported.
number_of_valuators
is always set to 0, valuators are not supported at this time.
number_of_choice_devices
is set to the number of choice devices supported.
number_of_string_devices
is always set to 0, string devices are not supported at this time.

DISCUSSION

Inquire_input_capabilities inquires the capabilities of the physical device specified by fildes.  If the device exists and is initialized, the information specified is returned.  If the device does not exist or is not initialized, gerror is set and the output parameters are undefined. 

Hewlett-Packard Company  —  May 11, 2021