graPHIGS Programming Interface: Subroutine Reference

The graPHIGS Programming Interface : Subroutine Reference

GPQNCN - Inquire Number of Available Class Names

GPQNCN (wstype, errind, number)

Note:

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

Purpose

Use GPQNCN to inquire the total number of class names that are available for the specified workstation type.

The graPHIGS API returns data indicating the maximum number of class names that are available for the specified workstation type.

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
548: SPECIFIED WORKSTATION TYPE CANNOT BE LOADED

number -- returned by the graPHIGS API, fullword integer

Number of available class names.

Error Codes

None

Related Subroutines

GPADCN: Add Class Name to Set
GPHLF: Set Highlighting Filter
GPIVF: Set Invisibility Filter
GPPKF: Set Pick Filter
GPQRCT: Inquire Realized Connection Type
GPRCN: Remove Class Name from Set

RCP code

201339396 (X'0C003204')