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Version: 2025

HMigrateLinkedCompositeKey (Function)
Migrates the values of the linked composite keys coming from a file in Hyper File 5.5 format to the HFSQL Classic format.
HToFile (Function)
Copies a data source (file, query, view, ...) to a physical HFSQL file with the same description. This file is neither encrypted nor password protected.
Handling a Check Box control through programming
WINDEV, WINDEV Mobile and WEBDEV allow you to handle a Check Box control through programming......
FileToMemoryTable (Function)
Populates a Table control programmatically with the records from a data file, HFSQL view or query (query created in the query editor or with HExecuteSQLQuery).
Characteristics of Table controls in a window
Table controls allow you to display and/or enter data......
Managing Google calendars
The Google Calendar service is an Internet application provided by Google that is used to manage a calendar on Internet......
Managing emails with "Simple MAPI"
Simple MAPI simplifies the management of emails received by the hosting company......
UUID (Type of variable)
The UUID type is used to easily manage: UUIDs or GUIDs, automatic UUID HFSQL identifiers, identifiers for COM/Automation objects and interfaces, ......
<Source>.ViewToFile (Function)
Saves the modifications performed in an HFSQL view (by HModify, HDelete or HCross) in the corresponding data file. This function uses the former view mechanism.
HViewToFile (Function)
Saves the modifications performed in an HFSQL view (by HModify, HDelete or HCross) in the corresponding data file. This function uses the former view mechanism.
The "Code hashtags" pane
UMC: Implementing and managing the "User Macro-Codes"
Regardless of the skill of the development team, the end user will always want to do something that has not been planned for......
Modifying an external component
An external component created and generated by WINDEV, WEBDEV or WINDEV Mobile can be modified at any time......
4. HFSQL Classic
HFSQL Classic is the database format......
Examples for using the OLE DB provider for HFSQL
Report blocks
A printed report includes several sections......
Report viewer: "Find" tab
A search feature is automatically available when previewing a report......
<Source>.ListItem (Function)
Returns the list of items in a data file (query or view) recognized by the HFSQL engine. The data files defined by HDeclare, HDeclareExternal and HDescribeFile are taken into account.
<Source>.ImportJSON (Function)
Imports a JSON file into a data file in HFSQL Classic format (data file described in the data model editor or declared by HDeclare, HDeclareExternal or HDescribeFile).
HImportJSON (Function)
Imports a JSON file into a data file in HFSQL Classic format (data file described in the data model editor or declared by HDeclare, HDeclareExternal or HDescribeFile).
RecordSize (Property)
The RecordSize property is used to get the size (in bytes) of a record in: a file described in the data model editor, a file described through programming, an HFSQL view, a query....
Managing the groups and users (HFSQL Client/Server)
To simplify the management of users and groups of users, the HFSQL Client/Server engine uses several variables allowing you to easily define the characteristics of groups and users......
Operating mode of HFSQL application
A HFSQL application can operate in network mode or in Client/Server mode......
3. Preparing the setup program
WINDEV Tutorial: Using an HFSQL Client/Server database Lesson 3 - Preparing the setup program - 5 min...
Constants for external files
List of constants used by the functions for managing external files....