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- Binding between a control and a WLanguage variable or between a control and a data file item
- Linking to a field: types of links
- Miscellaneous
<Window>.FromSource (Function) In french: <Fenêtre>.DepuisSource
 Not available with this kind of connection
Automatically updates the controls in a window or page with: - the values of the bound items in the current record (loaded in memory) of the HFSL data file described in the data model editor.
- the values of the bound WLanguage variables.
This operation is performed regardless of the state of the controls (grayed, inactive or invisible). Remarks: - <Window>.FromSource does not read records on the data file. The value of the record loaded in memory is used to update the controls. Therefore, a record must be loaded in memory previously:
  This function is also available for WEBDEV pages. It is equivalent to <Page>.FromSource. - Only the binding to the data file items is supported. Bindings to WLanguage variables are not supported in this version.
CUSTOMER.ReadSeekFirst(NAME, "PAUL")
IF CUSTOMER.Found() = True THEN
WIN_Customer.FromSource()
END
CUSTOMER.ReadFirst(NAME)
WIN_Customer.FromSource()
Syntax
<Window>.FromSource([<Source>])
<Window>: Window name Name of the window or page containing the controls to be updated.Summary: Called when a control gains focus. <Source>: Optional character string Name (in quotation marks) of the source the controls to be updated are bound to. This source can be:- The name of a data file: only fields linked to a field in this data file are taken into account.
- The name of a WLanguage variable. In this case, only the controls bound to the 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 variable data (e.g., a variable containing the name of another variable).
If this name is not specified, all the window controls bound to a data file item described in the data model editor or to a WLanguage variable will be taken into account. Remarks Binding between a control and a WLanguage variable or between a control and a data file item The binding between a control and a WLanguage variable or between a control and a data file item can be determined: - In the editor, in the control description window ("Binding" tab).
- Programmatically, with the DataBinding property.
Linking to a field: types of links There are two types of bindings between a control and an item - direct binding: In this case, <Window>.FromSource transfers the value of the items from the record loaded in memory to the bound control, without reading any values.
- binding by reading the records in the associated data file.
Miscellaneous - Auto-filled Combo Box control bound to an HFSQL data file: <Window>.FromSource must not be in the "Global declarations" event of the window. The function must be in the "Initialization" event of the window.
- Space characters in HFSQL items are kept.
- <Window>.FromSource updates Image controls with the value of the bound image memo items.
- <Window>.FromSource supports the NULL value. If the item content is NULL, an empty string will be displayed in the bound Edit control. To change this display mode, use ControlError.
- <Window>.FromSource is not available on views. The values of the items must be assigned to each control.
- Binding with "Secure Password" items:
- In an Edit control bound to a Password item, "*****" characters are displayed. If the Edit control is of type "Password", dots are displayed instead.
- The value of the "Password" item cannot be read again until the user changes the password value.
- The value of the "Password" item can still be compared to a string (e.g., "" or "1234").
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