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The graPHIGS Programming Interface : Subroutine Reference
GPRQCH - Request Choice
| GPRQCH
(wsid,
device,
status,
choice) |
Purpose
Use
GPRQCH to have the graPHIGS API execute a request
to the specified choice device.
The choice input value, which is the current measure
of the choice device, is returned.
A status of
1=NONE
means that a break action occurred.
Parameters
wsid -- specified by user, fullword integer
Workstation identifier.
device -- specified by user, fullword integer
Choice device number (>=1)
status -- returned by the graPHIGS API, fullword integer
Status
(1=NONE, 2=OK
)
choice -- returned by the graPHIGS API, fullword integer
Choice number.
A choice number of zero means no choice.
Error Codes
- 25
- SPECIFIED WORKSTATION DOES NOT EXIST
- 140
- DEVICE NUMBER < ONE OR DEVICE NOT AVAILABLE
- 141
- INPUT DEVICE NOT IN CORRECT MODE
- 168
- INPUT DEVICE IS CURRENTLY OWNED BY ANOTHER CONNECTION
Related Subroutines
- GPCHMO
- Set Choice Mode
- GPINCH
- Initialize Choice
- GPQLI
- Inquire List of Logical Input Devices
RCP code
201335562
(X'0C00230A')
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