ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2026

Python: Use in WLanguage
WLanguage supports Python functions in native mode......
OLECreateCopy (Function)
Associates an OLE control with an OLE object while specifying a base file.
AWP without UI
Bootstrap, Angular, React, Vue......
The structure of the RAD patterns (kept for backward compatibility)
...The RAD pattern files (MDL files) are used to describe:...
Transactions: Secure processes on HFSQL data files
This chapter presents the following topics......
Handling a WinForm .Net control through programming
Printing bar codes
WINDEV, WEBDEV and WINDEV Mobile allow you to print bar codes....
<Source>.CancelDeclaration (Function)
Allows you to: Delete a declaration made previously using HDeclare, HDeclareExternal, HDescriveFile. After this operation, the data file is no longer recognized by the HFSQL engine. Free the resources of a query (after calling HExecuteQuery or HExecuteSQLQuery)....
Modifying the values displayed in the result of a select query
In the result of a select query, you have the ability to only display......
Commands of the external interface
Handling a Link control through programming (Page)
WEBDEV allows you to handle a Link control through programming......
HCancelDeclaration (Function)
Used to: Delete a declaration made previously using HDeclare, HDeclareExternal, HDescriveFile. After this operation, the data file is no longer recognized by the HFSQL engine. Free the resources of a query (after calling HExecuteQuery or HExecuteSQLQuery)....
Hour (Property)
The Hour property is used to: Get the time from a variable of type Time or DateTime, or the number of hours from a variable of type Duration. Change the time in a variable of type Time or DateTime, or the number of hours in a variable of type Duration. Retrieve the time or the number of hours from a Date item (in "Date and time" or "Duration" format) or from a Time item. Modify the time or the number of hours in a Date item (in "Date and time" or "Duration" format) or in a Time item....
Restoring an HFSQL Client/Server database
A backup of a HFSQL Client/Server database can be restored at any time......
Manipuler un champ Editeur_HTML par programmation
Abre una ventana cuyo resultado se recuperará a través de una Procedure WLanguage ("callback").
Chart constants
List of constants used by the functions for chart management....
Edit options of a report
The report editor allows you to......
Error 1010: The member of the class is constant
5. HFSQL Client/Server
MDL file (kept for backward compatibility): Pattern description
The MDL file is the file used to generate a RAD window......
MDL file (kept for backward compatibility): Window description
The MDL file is the file used to generate a RAD window......
Handling a TreeView control at runtime
When the TreeView control is in edit, the user can expand or collapse the different levels of the tree structure by clicking the treeview elements....
WDReplic: Overview
WDReplic is a tool used to manage the replication of data between several computers that use the same application......
Multi-page print
A report can be very wide, with a width exceeding the width of a paper sheet......
The Web Camera control
...The Web Camera control is used to view a file that is refreshed at regular time intervals....