3-01:The Process Cycle

Chapter 3-1: Overview of APPX Processes

The Process Cycle

A single execution of an entire sequence of frames, images, event points, and children for one record in the process control file is referred to as a process cycle. For example, assume you created a process with a single frame, a single image, and one automatic child. In addition, you defined statements in Start of Frame and End of Frame, Pre-Display and Option Intercept, and Pre-Invocation and Post Invocation event points. For each record, the process cycle consists of the following APPX actions:

· Read a record in the process control file.

· Invoke the Start of Frame event point.

· Perform image processing.

· Invoke the Pre-Display event point.

· Display the image to the screen.

· (User completes the entry.)

· Invoke the Option Intercept event point.

· Invoke the End of Frame event point.

· Perform automatic child processing.

· Invoke the Pre-Invocation event point.

· Perform processing as specified for the child process.

· Invoke the Post Invocation event point.

APPX Application Design Manual (01/13/03)