graPHIGS Programming Interface: Subroutine Reference

The graPHIGS Programming Interface : Subroutine Reference

GPQCMM - Inquire List of Available Connection Methods

GPQCMM (start, number, errind, totnum, conn)

Note:

This subroutine is a graPHIGS API Description Table (PDT) inquiry. For an overview, see "PDT Inquiries"

Purpose

Use GPQCMM to determine the list of connection methods available to the application process when connecting to a nucleus.

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

start -- specified by user, fullword integer

Starting member in the list of available connection methods (>=1)

number -- specified by user, fullword integer

Number of connection methods 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:

538: START VALUE < ONE
539: REQUESTED NUMBER < ZERO
543: START EXCEEDS DATA EXTENT. TOTAL NUMBER AVAILABLE RETURNED

totnum -- returned by the graPHIGS API, fullword integer

Total number of available connection methods.

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

List of available connection methods (1=CALL, 2=GAM, 3=SOCKETS ) GAM=Graphics Access Method and is the connection method used with the IBM 6090 Graphics System Access.

Error Codes

None

Related Subroutines

GPCNC: Connect Nucleus

RCP code

201345793 (X'0C004B01')