WLanguage procedure called by fWatchFile

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fWatchFile (Function)

WLanguage procedure called by fWatchFile

WLanguage procedure ("callback") called by fWatchFile when a change is made to the watched file.

This can be a local, global, or internal.

Example

// Nom du fichier à surveiller
sNomFichier is string = "C:\Temp\MonRep\MonFichier.extension"
// La procédure TraiteModification sera appelée lorsque le fichier 
// "C:\Temp\MonRep\MonFichier.extension" sera modifié.
IF fWatchFile(sNomFichier, fSurveilleFichier_Callback, ...
		fwCreateFile + fwModifyFile + fwDeleteFile + ...
		fwRename) THEN
	// On informe l'utilisateur de la mise sous surveillance du fichier
	Info("La mise sous surveillance du fichier " + sNomFichier + " a réussi.")
ELSE
	// On informe l'utilisateur de l'échec de la mise sous surveillance du fichier
	Info("La mise sous surveillance du fichier " + sNomFichier + " a échoué.")
END

// Code de la procédure interne
INTERNAL PROCEDURE fSurveilleFichier_Callback(sNomComplet, sNomFichierSurveille, nAction, sAncienNomFichier)
	sDesignationAction is string
	// La désignation de l'action subie dépend de nAction
	SWITCH nAction
		CASE fwCreateFile : sDesignationAction = "Création de fichier"
		CASE fwDeleteFile : sDesignationAction = "Suppression de fichier"
		CASE fwModifyFile : sDesignationAction = "Modification de fichier"
		CASE fwRename : sDesignationAction = "Renommage de fichier"
	END
	// Ajout d'une ligne contenant les informations de la modification 
	// dans le champ Table TABLE_MODIFICATIONS
	TableAddLine(TABLE_MODIFICATIONS, sNomComplet, sNomFichierSurveille, ...
		sDesignationAction, sAncienNomFichier)
END

Syntax

fWatchFile_Callback(<Full name of the watched file> , <Name of modified file> , <Action> , <Old file name>)

<Full name of the watched file>: Character string

Full path (directory and name) of the watched file.

<Name of modified file>: Character string

Name of the watched file (after changes).

<Action>: Integer constant

Action performed on the file:
fwCreateFile The <Name of modified file> file was created.
fwDeleteFile The <Name of modified file> file was deleted.
fwModifyFile The <Name of modified file> file was modified.
fwRename The <Name of modified file> file was renamed.

<Old file name>: Character string

Former name of the modified file if it was renamed.

Remarks

Caution

This WLanguage procedure is run in a WLanguage thread.
Please note: the following processes cannot be run in threads:

opening windows with WLanguage functions such as Open, Use, Close, ... If windows are to be handled in threads (a rare case), a specific management system must be set up. For more details, see Opening a window in a secondary thread.
managing events.
managing timers.

For more details on threads, see Managing threads.

Business / UI classification: Neutral code

Component: wd300std.dll