ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2025

Using the Control Centers in Client/Server mode
All the Control Centers provided with WINDEV, WEBDEV and WINDEV Mobile use the same database...
Restoring an HFSQL Client/Server database
A backup of an HFSQL Client/Server database can be restored at any time...
Installing an HFSQL Client/Server server with an application
When creating the setup program of a WINDEV application using HFSQL Client/Server data files, the wizard allows you to...
HFSQL Client/Server: Overview
You have the ability to create applications that access the HFSQL Client/Server databases...
User Groupware and Client/Server data files
An application using User Groupware can be used with a HyperFileSQL database in Client/Server mode...
HFSQL Client/Server: Backing up databases
Like for any database, backups of your HFSQL Client/Server databases must be performed on a regular basis...
HFSQL Client/Server functions (prefix syntax)
Several HFSQL functions are used to manage the HFSQL Client/Server data...
HFSQL Client/Server database: Recommendations
This help page presents the main recommendations for optimizing the security and performance of an HFSQL Client/Server database according to the constraints and desired features...
User Groupware and Client/Server data files
An application that uses the User Groupware can be used with an HFSQL database in Client/Server mode...
How to backup HFSQL Client/Server databases?
The backup of the HFSQL Client/Server databases can be performed ...
HFSQL Client/Server functions
Several HFSQL functions are used to manage the HFSQL Client/Server data...
HCheckUnaltered (Function)
Checks that one or all records in an unalterable data file have not been modified (e.g. with a hexadecimal editor).
<HFSQL connection>.StatCalculateAsynchronous (Function)
Gets various statistics on the keys of an HFSQL Client/Server data file.
This function is only available in subscription-based versions, starting with WINDEV Suite 2025 - Update 2.
<HFSQL connection>.CheckIndexAsynchronous (Function)
Checks that the data contained in the index file (.NDX file) correctly references the data contained in the HFSQL Client/Server data file (.FIC file).
This function is only available in subscription-based versions, starting with WINDEV Suite 2025 - Update 2.
Unalterable data files
This feature is used to signal that a data file cannot be modified after writing...
HCheckIndexAsynchronous (Function)
Checks that the data contained in the index file (.NDX file) correctly references the data contained in the HFSQL Client/Server data file (.FIC file).
This function is only available in subscription-based versions, starting with WINDEV Suite 2025 - Update 2.
HReindexAsynchronous (Function)
Rebuilds the index of an HFSQL Client/Server data file (".NDX" file). This operation is asynchronous, i.e., it is performed on the server and does not block the client side.
This function is only available in subscription-based versions, starting with WINDEV Suite 2025 - Update 2.
HSendMessageToClient (Function)
Displays a message on the client computers.
Notifications of an HFSQL server
A server may encounter problems without any user (or developer) noticing anything.
For example:
  • a scheduled task may fail,
  • an automatic backup may fail,
  • a node may become inactive in an HFSQL cluster, ...
<HFSQL connection>.CheckMemoAsynchronous (Function)
Checks the structural integrity of memos in an HFSQL Client/Server data file.
This function is only available in subscription-based versions, starting with WINDEV Suite 2025 - Update 2.
HFSQL Cluster functions
The following functions are used to manage an HFSQL cluster
HStatCalculateAsynchronous (Function)
Gets various statistics on the keys of an HFSQL Client/Server data file.
This function is only available in subscription-based versions, starting with WINDEV Suite 2025 - Update 2.
<Connection variable>.SendMessageToClient (Function)
Displays a message on the client computers.
HCheckMemoAsynchronous (Function)
Checks the structural integrity of memos in an HFSQL Client/Server data file.
This function is only available in subscription-based versions, starting with WINDEV Suite 2025 - Update 2.
WDLog: Backup of HFSQL data files
WDLog allows you to save all the HFSQL data files used by a WINDEV or WEBDEV application...
<HFSQL connection>.ReindexAsynchronous (Function)
Rebuilds the index of an HFSQL Client/Server data file (".NDX" file). This operation is asynchronous, i.e., it is performed on the server and does not block the client side.
This function is only available in subscription-based versions, starting with WINDEV Suite 2025 - Update 2.
<Source>.CheckUnaltered (Function)
Checks that one or all records in an unalterable data file have not been modified (e.g. with a hexadecimal editor).
User Groupware
A Windows application, an Internet or Intranet site require to define the role of different contributors......
WINDEV concepts
Database of the Control Centers
The database of Control Centers groups various information shared by the different modules found in WINDEV, WEBDEV and WINDEV Mobile......
Encryption (Property)
The Encryption property allows you to manage the type of encryption used between Client computers and an HFSQL server.
HCheckIndex (Function)
Checks whether the data found in the index file (.NDX file) properly refers the data found in the data file (.FIC file).
Transactions: Secure processes on HFSQL data files
This chapter presents the following topics......
Frequently asked questions about HFSQL Cluster
Frequently asked questions about HFSQL cluster....
HPrepareQuery (Function)
Initializes a query and declares this query to the database server in order to optimize the next executions of this query.
User Groupware files
Two categories of data files are managed......
NbDescribedThumbnail (Property)
The NbDescribedThumbnail property is used to get the number of thumbnails expected for an item.
Setup of a WEBDEV site: Automatic data file modification
The automatic modification of the data files allows updating the description of data files on the Web server......
HRegenerateFile (Function)
Regenerates a data file from its log.
NbThumbnail (Property)
The NbThumbnail property is used to get the number of thumbnails generated for an item.
MaxThumbnailHeight (Property)
The MaxThumbnailHeight property is used to get and change the maximum height of a thumbnail of an Image item (binary memo).
MaxThumbnailWidth (Property)
The MaxThumbnailWidth property is used to get or change the maximum width of a thumbnail of an Image item (binary memo).
HImportHF55 (Function)
Imports a Hyper File 5.5 file into an HFSQL Classic file.
InfoThumbnailGeneration (Property)
The InfoThumbnailGeneration property is used to determine if the thumbnails of an item have been generated successfully.
<Connection variable>.FileExist (Function)
Finds out if a file exists, i.e. if it has been physically created (HCreation or HCreationIfNotFound).
WINDEV 2024 Tutorial - Table of contents
WEBDEV 2024 Tutorial - Table of contents
<Connection variable>.RegenerateFile (Function)
Regenerates a data file from its log.
Reports & Queries: Unsupported WLanguage functions
Some WLanguage functions are not available in Reports & Queries......
HTransactionInProgress (Function)
Used to find out whether a transaction is in progress.
<Source>.ListLink (Function)
Returns the list of links (Merise type) found in the current analysis or in a specific analysis.