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  • Binding between a control and a WLanguage variable or between a control and an item of a data file
  • Updating the items: Special cases
WINDEV
WindowsLinuxUniversal Windows 10 AppJavaReports and QueriesUser code (UMC)
WEBDEV
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WINDEV Mobile
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Others
Stored procedures
Automatically updates:
  • the memory value of the items in a data file with the value from the controls in the window or page. The data file items bound to the window controls are automatically updated with the values of these controls (even if they are grayed, inactive or invisible).
  • the value of the WLanguage variables with the value from the controls in the window or page. The WLanguage variables bound to the window controls are automatically updated with the values of these controls (even if they are grayed, inactive or invisible).
PHP Only the binding to the items of a data file is supported. The binding to WLanguage variables is not supported in this version.
Versions 16 and later
Linux This function is now available for WINDEV applications in Linux.
New in version 16
Linux This function is now available for WINDEV applications in Linux.
Linux This function is now available for WINDEV applications in Linux.
Remarks:
  • ScreenToFile cannot be used to write to the data file: the variables of the data file items can only be updated (i.e variables of the record loaded in memory). To modify the records, you must use HAdd, HModify, HWrite, etc.
  • In WEBDEV, you also have the ability to use PageToFile.
Remark: From version 19, HFSQL is the new name of HyperFileSQL.
Example
// Click the "Add" button
ScreenToFile()
HAdd(Customer)
IF HErrorDuplicates() = True THEN
Error("This number already exists")
END
Syntax
ScreenToFile([<Window/Page> [, <Source>]])
<Window/Page>: Name of window or page
Name of the window or page that contains the controls. If this parameter is not specified or is an empty string (""), the window/page of the current code is used.
PHP If this parameter is specified, it must correspond to the name of the current page. Otherwise, an error occurs.
<Source>: Optional character string (with or without quotes)
Name of the source containing the data to update. This source can be:
  • The name of a data file: only controls that have a binding to this data file are taken into account.
  • The name of a WLanguage variable: only controls that have a binding to this WLanguage variable are taken into account.
    Remarks:
    • If the name of the variable is enclosed in quotes, the control will be bound to the specified variable.
    • If the name of the variable is not enclosed in quotes, the control will be bound to the content of the variable (e.g., a variable containing the name of another variable).
If this name is not specified, all the window or page controls that are bound to a data file described in the data model editor or with a WLanguage variable will be taken into account.
Remarks

Binding between a control and a WLanguage variable or between a control and an item of a data file

The binding between a control and a WLanguage variable or between a control and an item of a data file can be determined:
  • In the editor, in the control description window ("Binding" tab).
  • In the code, with the DataBinding property.

Updating the items: Special cases

  • To automatically assign the NULL value to an item with ScreenToFile:
    1. Check "NULL supported" for the item in the data model editor.
    2. Select the "NULL if empty" option in the edit control associated with the item.
  • The items of the data file that are not bound to a control are not updated by ScreenToFile.
  • If multiple controls in the window/page are bound to the same data file item, ScreenToFile may not update the bound item properly. It is not recommended to bind multiple controls in a window/page to the same item of a data file.
  • ScreenToFile does not update the items with the values from Image controls. Use HLinkMemo.
  • ScreenToFile is not available on views.
Component: wd260obj.dll
Minimum version required
  • Version 9
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