GDDM-GKS V1R1 Programming Guide and Reference
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GESC

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



Purpose



 GESC
                                    
 (fctid, lidr, idr, mlodr, lodr,
 odr)
   
 APL code  1491
 GKS RCP code  X'38000B00' (939526912)
   


Function: To escape.

Control function. Allows the use of non-standard workstation capabilities. (See the section "GDDM-GKS restrictions" below.)

Parameters


fctid (specified by user) (fullword integer)
The function identifier.

lidr (specified by user) (fullword integer)
The length of the data record idr.

idr (specified by user) (array of 80-byte character tokens)
The data record.

mlodr (specified by user) (fullword integer)
The maximum length of the output data record.

lodr (returned by GDDM) (fullword integer)
The number of array elements occupied by odr.

odr (returned by GDDM) (array of 80-byte character tokens)
The output data record.


Operating states


GKOP, WSOP, WSAC, SGOP

Related functions


None.

Description


(See the section "GDDM-GKS restrictions" below.)

This function provides for implementation-dependent, non-standard activity at a workstation. For example, a workstation that has received cell array primitive output could be instructed to process that output in some way.

GDDM-GKS Restrictions

GDDM-GKS does not provide any escape functions. If this function is called, one of the errors 8, 180, or 181 is reported.

Principal errors


8
GKS not in proper state: GKS shall be in one of the states GKOP, WSOP, WSAC, or SGOP
180
Specified escape function is not supported
181
Specified escape function identification is invalid

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