Invocation of PG and chart routines

GDDM-PGF V2R1.3 Programming Guide and Reference

Invocation of PG and chart routines

GDDM-PGF V2R1.3 Programming Guide and Reference
SC33-0333-01

The PG routines are invoked by using call statements from the application program. The routines exist in two forms, a reentrant form and a nonreentrant form.

The reentrant form differs from the nonreentrant one in that an additional parameter must be supplied. The additional parameter (the first) must be supplied on each call. This parameter is the anchor used to identify all resources (particularly storage) associated with that instance of GDDM.

A third type of interface, intended for system programming uses, is also available.

This topic describes the nonreentrant interface to the PG routines. The other two forms are similar to the reentrant and system programmer forms of the GDDM Base calls. Both are described fully in the GDDM Base Application Programming Reference book.

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