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Is_File_Included

Purpose

To determine which files will be affected when the entry_update, entry_display, and entry_clear messages are sent during a data-dictionary operation. This command is rarely used by developers.

Syntax

Is_File_Included {file-number} {operation-type}

Where: - {file-number} is the file list number of the file to be affected. - {operation-type} determines what operation type you are testing: - A clear (0) - A find/save operation (1)

What It Does

This command determines if the last data-dictionary operation caused a record in a file to be cleared or found. You pass the file number and the operation type.

  • If the operation type is 0 and the file was cleared, the Found expression will return a True value.
  • If the operation type is 1 and a record was found in the file, the Found expression will return a True value.

This command is internal and should only be used by developers who thoroughly understand how data-dictionary objects and data-entry objects interact. Examples of its usage can be found by reviewing the DataFlex packages.