Picture interchange format files

GDDM V3R2 Base Application Programming Reference

Picture interchange format files

GDDM V3R2 Base Application Programming Reference
SC33-0868-02

Application programs can transfer picture information between GDDM running in a host system and the 3270-PC/G or 3270-PC/GX work station as picture interchange format (PIF) files by using the GDDM-supplied GDF conversion utility (ADMUPCT/V) and the 3270-PC Graphics Control Program file transfer function.

A PIF file can also be generated on a workstation that uses GDDM-PCLK, through the User Control facility. (For details, refer to the GDDM User's Guide.)

As the PIF files on the host have different internal formats from those on a workstation, when files are transferred from one system to the other, they must also be converted to the relevant format before they can be used.

This conversion can be done at the same time as the transfer operation or as a separate operation.

The methods used to process PIF files vary according to the subsystem that the GDDM host session is running under. This topic explains:

Processing PIF files under TSO
Processing PIF files under VM/CMS.

Note: GDDM does not support PIF files under CICS or IMS.

These topics are discussed for each subsystem:

How PIF data relates to GDF data
How to create PIF information under GDDM
How to create PIF information at a workstation
What a PIF file must contain if it is to be used under GDDM
The structure of a PIF file
Base PIF files.

The commands needed to convert and transfer PIF files are defined in the sections that follow; for more information, refer to the GDDM User's Guide.

Subtopics:

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