graPHIGS Programming Interface: Subroutine Reference

The graPHIGS Programming Interface : Subroutine Reference

GPQCVO - Inquire Current View Table Entries Output

GPQCVO (wsid, start, number, errind, nview, view)

Note:

This subroutine is a Workstation State List (WSL) inquiry. For an overview, see "WSL Inquiries"

Purpose

Use GPQCVO to inquire the current view table indexes in output priority order for the specified workstation.

If the inquired information is available, then the graPHIGS API sets the error indicator to zero and returns the values in the output parameters. If the error indicator is 543 (the start value exceeds the extent of the available data), then only the total number (totnum) parameter is set. If the inquired information is unavailable, then the error indicator (errind) contains an error number indicating the reason, and the values returned in the output parameters are unpredictable.

Parameters

wsid -- specified by user, fullword integer

Workstation identifier.

start -- specified by user, fullword integer

Starting member of the list of view table entries (>=1)

number -- specified by user, fullword integer

Number of view table entries requested (>=0)

errind -- returned by the graPHIGS API, fullword integer

Error indicator. If the error indicator is zero, the request has been completed. Otherwise, one of the following errors exists:

25: SPECIFIED WORKSTATION DOES NOT EXIST
35: WORKSTATION HAS ONLY INPUT CAPABILITIES
538: START VALUE < ONE
539: REQUESTED NUMBER < ZERO
543: START EXCEEDS DATA EXTENT. TOTAL NUMBER AVAILABLE RETURNED

nview -- returned by the graPHIGS API, fullword integer

Total number of view table entries.

view -- returned by the graPHIGS API, array of fullword integers

List of view table indexes, in decreasing view output priority order. The output array must be large enough to contain the requested data.

Error Codes

None

Related Subroutines

GPVOP: Set View Output Priority

RCP code

201336848 (X'0C002810')