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  • Overview
  • Initialization code of a programmed ListView control
  • HFSQL thumbnails
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Stored procedures
ListView control linked to a data file (or to a query)
Overview
A ListView control can be used to display the content of a data file (or the content of a query).
When a ListView control is linked to a data file (or to a query), this control can be initialized with the content of the data file:
  • automatically: No specific code is required to initialize the ListView control. The characteristics of the browse performed in the data file linked to the control are described in the "Content" tab of control description.
  • by programming: The code used to browse the data file linked to the ListView control must be entered in the initialization code of the control. This method is not recommended.
The content of two different items is displayed in the ListView control:
  • an item corresponding to the captions ("Text" item for example).
  • an item corresponding to the images ("Sound, Image, Binary" item for example).
Note: When creating a ListView control, the wizard proposes to create the different types of listviews. For a ListView control linked to a data file or to a query, the wizard asks for the necessary information (file used, items used, ...).
Initialization code of a programmed ListView control
If you are using a ListView control based on a data file with programmed initialization, the code for browsing the data file must be entered in the initializing code of the control.
Example: Initializing a ListView control with the photographs found in the TRAVEL file.
// -- Initialization code of ListView control
HReadFirst(TRAVEL, Photo)
WHILE NOT HOut()
ListAdd(LSV_TravelPhoto, TRAVEL.Photo)
HReadNext(TRAVEL, Photo)
END
HFSQL thumbnails
The item linked to the images displayed in the ListView control can use HFSQL thumbnails. In this case, the display of images will be optimized.
See HFSQL thumbnails for more details.
Note: From version 19, HFSQL is the new name of HyperFileSQL.
Minimum required version
  • Version 9
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