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- Overview
- Initialization code of a programmed ListView control
- HFSQL thumbnails
ListView control linked to a data file (or to a query)
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: - or automatically: No specific code is required to initialize the ListView control.. The options to loop through the data file linked to the control can be defined in the "Content" tab of the control description.
- or by programming: you need to enter the path code of the data file linked to the List Box control in the field initialization code.. 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).
Remark: When creating a ListView control, the wizard offers to create the different types of image lists. For a ListView control linked to a data file or to a query, the wizard asks for the necessary information (data file used, items used, etc.). 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 photographs from the VOYAGE data file..
HReadFirst(TRAVEL, Photo)
WHILE NOT HOut()
ListAdd(LSV_TravelPhoto, TRAVEL.Photo)
HReadNext(TRAVEL, Photo)
END
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.
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