5.3.3 APPX Application Design Manual

+ Chapter 1-1: Overview of Application Design
+ Chapter 1-2: Getting Started
+ Chapter 1-3: Data Dictionary
+ Chapter 1-4: Understanding Process Design
+ Chapter 1-5: Interprocess Communication
+ Chapter 1-6: Customizing Your Application
+ Chapter 1-7: The Documentation Facility
+ Chapter 1-8: Application Design Tools
+ Chapter 2-1: Data Dictionary Overview
+ Chapter 2-2: Data Dictionary Concepts
+ Chapter 2-3: Domains
+ Chapter 2-4: Files and Fields
+ Chapter 2-5: Work Fields
+ Chapter 3-1: Overview of APPX Processes
+ Chapter 3-2: Getting Started
+ Chapter 3-3: Process Definition
+ Chapter 3-4: Menu Processes
+ Chapter 3-5: Job Processes
+ Chapter 3-6: Input Processes
+ Chapter 3-7: Output Processes
+ Chapter 3-8: Update Processes
+ Chapter 3-9: Query Processes
+ Chapter 3-10: Inquiry Processes
+ Chapter 3-11: Status Processes
+ Chapter 3-12: Subroutine Processes
+ Chapter 3-13: Table Processes
+ Chapter 3-14: Automatic and Optional Children
+ Chapter 3-15: Using the Image Editor
+ Chapter 3-16: Using GUI Features of the Image Editor
- Chapter 3-17: Using Event Points
+ Chapter 4-1: ILF Integration
+ Chapter 4-2: True/False Status Indicators
+ Chapter 4-3: Specifying Statements
+ Chapter 4-4: The ILF Editor
+ Chapter 4-5: The Appx ILF Debugger
+ Chapter 4-6: ILF Keyword Reference
+ Chapter 4-7: Predefined Fields
+ Chapter 4-8: Runtime Subroutine's and Predefined Processes
+ Chapter 4-9: Appx Chart Director API

Chapter 3-17: Using Event Points

Pre-PCF Update


The Pre-PCF Update event point executes when a record is changed, added, or deleted. As a result, its execution is dependent upon the existence of a PCF. If no PCF file is designated, this event point does not execute. It also does not execute in inquire mode, or in change mode if the record is not modified in any manner by the user or event point code.

Pre-PCF Update is found exclusively in input processes, and executes only in the data addition, data modification, and data deletion interactive phases. It executes immediately before the PCF record is saved, and is followed by Post PCF Update immediately after the record is saved.

Because the event point only executes when a record is being saved or deleted, you can use this event point to perform actions on the PCF record you are saving. It is generally restricted to performing actions in the PCF record itself because the operating system has a hold on the PCF record. Normally, you should separate manipulation of PCF records from manipulation of records in other files. Use this event point to perform any required manipulation of the PCF record. Use Post PCF Update to manipulate records in other files.

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