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 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2026

Analysis: Description of data file structure
The analysis allows you to define the structure of data files used by the project...
Creating an executable: Data file directory
Two types of directories can be configured when creating the executable...
Looper control linked to a data file
A Looper control can be used to display the content of a data file or query...
Generating a description of a data file from a window or from a page
When you design a quick prototype, you often create windows (or pages) without defining any data files...
Linking a Table control to a data file or query
A Table control can be used to display the content of a data file or query...
How do I run through a data file?
Zombie data files and items
During the life of an application, items live and die...
NULL values in HFSQL
WINDEV, WEBDEV and WINDEV Mobile support NULL values in items of HFSQL data files and for all other types of access (Native, OLE DB...
HDescribeSemanticIndex (Function)
Defines a semantic index of a data file created programmatically.
<Source>.DescribeFile (Function)
Describes a data file programmatically.
<Source>.UnlockFile (Function)
Unlocks the records of a data file:
  • locked by HLockFile.
  • individually locked by a locking read function.
<Source>.ListKey (Function)
Returns the list of keys in a data file (query or view) recognized by the HFSQL engine.
Using Unicode in HFSQL data files
The analysis proposes two types of Unicode items ...
HListSpatialKey (Function)
Returns the spatial keys of a data file (used in a query or view) recognized by the HFSQL engine.
HDBCreation (Function)
Ends the description of the structure of an xBase data file programmatically.
HListFile (Function)
Returns the list of files:
  • current analysis.
  • analyses in progress (projects with multiple analyses).
  • a specific analysis recognized by the HFSQL engine.
  • available on a connection via a Native Connector or an OLE DB driver.
  • for a group of files defined in the data model editor.
HDescribeItem (Function)
Describes a file item programmatically.
HListKey (Function)
Returns the list of keys in a data file (query or view) recognized by the HFSQL engine.
HDescribeFile (Function)
Describes a data file programmatically.
HUnlockFile (Function)
Unlocks the records of a data file:
  • locked by HLockFile.
  • individually locked by a locking read function.
HDescribeLink (Function)
Describes a link between two data files programmatically.
<Connection variable>.ListWatchedFiles (Function)
Returns the list of data files watched by HWatch.
HDescribeFullTextIndex (Function)
Describes a full-text index of data file created programmatically.
Unalterable data files
This feature is used to signal that a data file cannot be modified after writing...
<Source>.ListSpatialKeys (Function)
Returns the spatial keys of a data file (used in a query or view) recognized by the HFSQL engine.
HListWatchedFiles (Function)
Returns the list of data files watched by HWatch.
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