WLanguage procedure called by fWatchDirectory

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fWatchDirectory (Function)

WLanguage procedure called by fWatchDirectory

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

This can be a local, global, or internal.

Example

// Nom du répertoire à surveiller
sNomRepertoire is string = "C:\Temp\MonRep"
// La procédure fSurveilleRépertoire_Callback sera appelée 
// lorsqu'un fichier ou un répertoire contenu dans le répertoire "C:\Temp\MonRep" sera modifié.  
IF fWatchDirectory(sNomRepertoire, fSurveilleRépertoire_Callback, fwCreateFile + ...
		fwModifyFile + fwDeleteFile + fwRename) THEN
	// On informe l'utilisateur de la mise sous surveillance du répertoire
	Info("La mise sous surveillance du répertoire " + sNomRepertoire + " a réussi.")
ELSE
	// On informe l'utilisateur de l'échec de la mise sous surveillance du répertoire
	Info("La mise sous surveillance du répertoire " + sNomRepertoire + " a échoué.")
END

// Code de la procédure
PROCEDURE fSurveilleRépertoire_Callback(sNomRepertoire, sNomFichier, nAction, sAncienNomFichier)
ExecuteMainThread(AjoutTable, sNomRepertoire, sNomFichier, nAction, sAncienNomFichier)

// Procédure qui agit sur le thread principal
PROCEDURE AjoutTable(sNomRepertoire, sNomFichier, 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 la table TABLE_MODIFICATIONS
TableAddLine(TABLE_MODIFICATIONS, sNomRepertoire, sNomFichier, ...
		sDesignationAction, sAncienNomFichier)

Syntax

fWatchDirectory_Callback(<Name of the watched directory> , <Name of modified element> , <Action> , <Former name>)

<Name of the watched directory>: Character string

Full name of the watched directory.

<Name of modified element>: Character string

Name of the modified file or directory.

<Action>: Integer constant

Action performed:
fwCreateFile The <Name of modified element> file or directory was created in <Directory>.
fwDeleteFile The <Name of modified element> file or directory was deleted from <Directory>.
fwModifyFile The <Name of modified element> file or directory was modified in <Directory>.
fwRename The <Name of modified element> file or directory was renamed in <Directory>.

<Former name>: Character string

Former name of the modified file or directory if they were 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