graPHIGS Programming Interface: Subroutine Reference

The graPHIGS Programming Interface : Subroutine Reference

GPQDS - Inquire Maximum Display Surface Size

GPQDS (wstype, errind, units, csize, asize)

Note:

This subroutine is a Workstation Description Table (WDT) inquiry. For an overview, see "WDT Inquiries"

Purpose

Use GPQDS to inquire the maximum display surface size for the specified workstation type.

The graPHIGS API returns the maximum display surface sizes in Device Coordinates (DC) and address units.

If the information is available, then the graPHIGS API sets the error indicator to zero and returns the values in the output parameter. If the inquired information is unavailable, then the error indicator (errind) contains the error number indicating the reason, and the values returned in the output parameter are unpredictable.

Parameters

wstype -- specified by user, 8-byte character string

Workstation type.

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:

23: SPECIFIED WORKSTATION TYPE DOES NOT EXIST
35: WORKSTATION HAS ONLY INPUT CAPABILITIES
548: SPECIFIED WORKSTATION TYPE CANNOT BE LOADED

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 (DC)

Maximum display surface size in x, y, and z directions.

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

Maximum display surface size in address units.

Error Codes

None

Related Subroutines

GPINCH: Initialize Choice
GPINLC: Initialize Locator
GPINPK: Initialize Pick
GPINSK: Initialize Stroke
GPINST: Initialize String
GPINVL: Initialize Valuator
GPQRCT: Inquire Realized Connection Type

RCP code

201339652 (X'0C003304')