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Stored procedures
InfoThumbnailGeneration (Property)
In french: InfoGénérationVignette
HFSQL ClassicHFSQL Client/ServerAvailable 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 through programming.
Remark: The HFSQL thumbnails of an item are automatically generated when the following operations are performed:
// Generate the first thumbnail for the description of the Photo item?
InfoGene is string
InfoGene = Product.Photo.InfoThumbnailGeneration[1]
// equivalent to InfoGene = Photo.InfoThumbnailGeneration
// Generate the Nth thumbnail of the Product.Image item?
InfoGene is string
InfoGene = Product.Image.InfoThumbnailGeneration[num]
IF InfoGene = "" THEN
// Thumbnail number greater than the expected number of thumbnails?
IF num > Product.Image.NbDescribedThumbnail THEN
Error("This thumbnail does not exist")
Info("The thumbnail was successfully generated")
// Generation error
Error("Generation error", InfoGene)
Generation information> = <Data file>.<Item>.InfoThumbnailGeneration[<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.


The InfoThumbnailGeneration property is available:
  • in HFSQL Classic: on the items of a data file, view or query.
  • in HFSQL Client/Server mode: on the items found of a data file only.
Minimum version required
  • Version 10
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Last update: 05/26/2022

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