HCheckUnaltered (Function)

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HCheckUnaltered (Function)

In french: HVérifieInaltéré

Available only with these kinds of connection

Checks that one or all records in an unalterable data file have not been modified (e.g. with a hexadecimal editor).

Caution:

This function is available from version 23. For Client/Server files, the HFSQL Client/Server engine must be in version 23 (or later).
An altered record can be read if the record header is not altered.

Example

// Vérification de tous les enregistrements du fichier MonFichierClient
IF HCheckUnaltered(MonFichierClient) = True THEN
	Trace("Aucun enregistrement n'a été modifié")
ELSE
	Trace("Il y a eu altération du fichier")
END

Syntax

<Result> = HCheckUnaltered(<Data file> [, <Record> [, <Progress Bar>]])

<Result>: Boolean

True if the record was not altered,
False otherwise. In this case, ErrorInfo returns the list of altered records.

<Data file>: Character string

Name of the HFSQL data file to check.

<Record>: Optional integer or Integer constant

Number of the record to check.
Constant used to specify the record to check:
hCurrentRecNum Check the current record.
hRecNumAll
(Default value) Check all records.

<Progress Bar>: Optional control name or window name

Name of the window in which the progress bar will be displayed.
Name of the Progress Bar control.
This parameter is ignored.

Component: wd300hf.dll