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  • Link between control and item
  • Link between control and variable
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Stored procedures
8. Associating controls with data
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A window can display information coming from:
  • a database: the controls are directly linked to the items of data files or queries available in the database.
  • variables found in the WLanguage code of the application (variables global to the window or to the project or parameters passed to the window).
To display this information in a window, the controls of this window must be linked to:
  • the different database items.
  • the available WLanguage variables.
The method for displaying and retrieving the information is straightforward:
  • The link between a control and an item or between a control and a variable is defined in the window editor when describing the control ("Link" tab).
  • ScreenToFile is used to update the record or the variable with the data displayed on the screen.
  • FileToScreen is used to update the data displayed on the screen with the information saved in the data file or with the information saved in the variable.
Link between control and item
Link between control and item
.
Link between control and variable
Link between control and variable
.

Android

Remark: The control/variable link is not available for the Android applications.
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Minimum version required
  • Version 9
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