ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2026

Null (Reserved word)
The Null keyword can be used according to different methods in WLanguage......
WDHFDiff: Overview
WDHFDiff is a tool used to compare HFSQL data files......
How to manage a multi-selection in a List Box control?
This help page explains how to manage a multi-selection in a List Box control....
Managing HFSQL Client/Server files
The HFSQL Control Center allows you to fully manage HFSQL Client/Server data files......
WDSQL: Creating an SQL query
Once the connection to the database is established, WDSQL allows you to create different types of SQL queries......
WDLog: Viewing a log file
WDLog is used to view the content of a log file......
Sending faxes with WINDEV and WEBDEV
To send faxes from an application or from a site, WINDEV and WEBDEV propose several functions allowing you to send faxes via the system fax server available in Windows XP and Windows 2000......
Setup via physical media
A setup by physical media allows you to give to the hosting company a media containing all the files required to install the site on a server......
Help editor options
The options of the help editor ("Display......
Scope of procedures
The scope of a procedure defines whether it is public, private, etc......
How to create two linked cascading tables?
This help page explains how to create two linked cascading Table controls in a window or page....
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......
Table, List Box and Combo Box controls bound to queries
A Table, List Box or Combo Box control can be used to display the content of a data file or query......
Parameter of a procedure/function
You have the ability to pass parameters to a procedure....
Managing the HFSQL servers
The HFSQL Control Center allows you to fully manage HFSQL servers......
The log process
...A log is a special file that contains the history of all changes made to one or more data files over a given period of time (date the file was created, last automatic data modification, last backup created with WDLog, etc.)...
AWP: Managing contexts
To keep the value of global variables when switching from a page to another one, the AWP mode proposes a management of contexts......
Binding a Spin control to an item
A Spin control can be bound to an item in a data file, query, etc....
Composite keys
A composite key is a key item containing several other items......
Creating and testing a query with parameters
Regardless of the query type (Select, Insert, Delete, Update) and regardless of its creation mode (with the wizard or by SQL directly), you have the ability to use parameters. The name of the parameter is specified when creating the query....
Installing and configuring HFSQL Cluster
Required configuration and overview for installing HFSQL Cluster....
How to read emails via the POP3 protocol?
This help page explains how to read emails via the POP3 protocol....
Handling data files in PHP
WEBDEV allows you to create a PHP site that handles data files......
Handling a Breadcrumb control through programming
The Breadcrumb control can be handled through programming......
HFSQL Control Center: Managing scheduled elements
You have the ability to define scheduled elements on the HFSQL server....