GQDSP

GDDM-GKS V1R1 Programming Guide and Reference

GQDSP

GDDM-GKS V1R1 Programming Guide and Reference
SC33-0334-00

Purpose


GQDSP	(wtype, errind, dcunit, rx, ry, lx, ly)

APL code	1388
GKS RCP code	X'3800C300' (939574016)

Function: To inquire display space size.

Inquiry function. Returns the device units and the maximum display surface size, in both device coordinates and raster units, for a workstation, from the workstation description table.

Parameters

wtype (specified by user) (fullword integer)
The workstation type.

errind (returned by GDDM) (fullword integer)
The error indicator.

dcunit (returned by GDDM) (fullword integer)
The device coordinate system units. The possible values are:

0 (GMETRE): Meters
1 (GOTHU): Other units

rx (returned by GDDM) (short floating point)

ry (returned by GDDM) (short floating point)
The maximum display surface size in device coordinates.

lx (returned by GDDM) (fullword integer)

ly (returned by GDDM) (fullword integer)
The maximum display surface size in raster units.

Operating states

GKOP, WSOP, WSAC, SGOP

Related functions

None.

Description

If the inquired information is available, it is returned as output, and errind is returned as 0 (zero). If the inquired information is not available, all output is invalid, and errind returns an error indicator.

Principal errors

8: GKS not in proper state: GKS shall be in one of the states GKOP, WSOP, WSAC, or SGOP
22: Specified workstation type is invalid
23: Specified workstation type does not exist
31: Specified workstation is of category MO
33: Specified workstation is of category MI
36: Specified workstation is Workstation Independent Segment Storage

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