graPHIGS Programming Interface: Subroutine Reference

The graPHIGS Programming Interface : Subroutine Reference

GPQADS - Inquire Actual Maximum Display Surface Size

GPQADS (wsid, errind, units, csize, asize)

Purpose

Use GPQADS to inquire the actual display surface size.

The graPHIGS API returns the values in Device Coordinate (DC) units and address units (for example, raster units) 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 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.

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

units -- returned by the graPHIGS API, fullword integer

Device coordinate units (1=METERS, 2=OTHER )

csize -- returned by the graPHIGS API, 3 short floating-point numbers

Actual display surface size in device coordinate units.

asize -- returned by the graPHIGS API, 3 fullword integers

Actual display surface size in address units.

Error Codes

None

Related Subroutines

GPQDS: Inquire Maximum Display Surface Size
GPQRCT: Inquire Realized Connection Type

RCP code

201336578 (X'0C002702')