InfoThumbnailGeneration (Property)

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InfoThumbnailGeneration (Property)

In french: InfoGénérationVignette

Available only with these kinds of connection

The InfoThumbnailGeneration property is used to determine if the thumbnails of an item have been generated successfully.

This item was defined in the data model editor or programmatically.

Remark: HFSQL thumbnails of a heading are generated automatically when:

writing the corresponding record (HAdd or HWrite),
changing the value of the item (HModify),
automatic modification of data files.

Example

// Génération de la première vignette de la description de rubrique Photo ?
InfoGéné is string
InfoGéné = Produit.Photo.InfoGénérationVignette[1]
// équivalent à InfoGéné = Photo.InfoGénérationVignette

// Génération de la nième vignette de la rubrique Produit.Image ?
InfoGéné is string
InfoGéné = Produit.Image.InfoGénérationVignette[num]

IF InfoGéné = "" THEN
	// N° de vignette supérieur au nombre de vignettes attendues ?
	IF num > Produit.Image.NbVignetteDécrit THEN
		Error("Cette vignette n'existe pas")
	ELSE
		Info("La vignette a été correctement générée")
	END
ELSE
	// Erreur de génération
	Error("Erreur de génération", InfoGéné)
END

Syntax

<Information de génération> = <Fichier de données>.<Rubrique>.InfoGenerationVignette[<N>]

<Generation information>: Character string

Empty string ("") if the specified thumbnail was successfully generated,
Error message otherwise.
An empty string ("") is also returned:
if <N> is greater than the number of thumbnails described for the item. To get the number of thumbnails in a given item, use the NbDescribedThumbnail property.
if the current record was written by a Hyper File 9 (or earlier) engine (see the Notes).

<Data file>: Character string

Name of the data file used. This name was defined in the data model editor or with the File Description type.

<Item>: Character string

Name of binary memo item used. This name was defined in the data model editor or with the Item Description type.

<N>: Optional integer

Number of the thumbnail used. If this parameter is not specified, the generation information of the first thumbnail is returned.

Remarks

Limitation

The InfoThumbnailGeneration property is available:

in HFSQL Classic: on the fields of a data file, view or query.
in HFSQL Client/Server: on data file fields only.