ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2025

HDescribeFile (Function)
Describes a data file programmatically.
Currency + Euro type
In a WINDEV application or in a WEBDEV site, the Euro must be managed in all the controls used to enter or display currency values......
SQLite: Programming with HFSQL functions
To use an SQLite database with Native Connector (also called Native Access), the structure of SQLite tables must be imported into the data model editor....
How to create an SQL query with a calculation formula?
This help page explains how to create a query with a calculation formula with the query editor....
Generating the analysis
The analysis generation comes before the programming phase and after the file description phase......
HTransactionCancel (Function)
If a transaction is in progress, cancels all the operations performed on the data files in transaction since the start of transaction.
How to save and retrieve an image in a binary memo
9. Queries
A query is used to request information from a database to view, insert, change or delete data....
The requested action cannot been performed: the page was not synchronized
Analysis associated with a project
When a WINDEV, WEBDEV or WINDEV Mobile project uses data files, it must be associated with an analysis......
Looper control linked to a data file
A Looper control can be used to display the content of a data file or query......
OOP concepts
A class contains the description of a data structure (members) and the processes (methods) that handle this structure....
<Connection variable>.Transaction (Function)
Starts a transaction on the data files (HFSQL or accessed via Native Access) and creates the transaction file.
<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.
HTransactionStart (Function)
Starts a transaction on the data files (HFSQL or accessed via a Native Connector) and creates the transaction file.
Native SQLite Connector: Programming with SQL functions
The use of SQL functions to handle SQLite data does not require importing the data file structure into the analysis....
The "Internal report" control
The "Internal report" controls are used to print several reports (secondary reports) in a single report (main report) without programming......
HTransaction (Function)
Starts a transaction on the data files (HFSQL or accessed via a Native Connector) and creates the transaction file.
<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)....
Binding an OLE control to an item
An OLE control can be bound to an item in a data file, query, etc....
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)....
StartDatePeriodDisplayed (Property)
The StartDatePeriodDisplayed property is used to get the start date of the time period displayed in a Scheduler or Organizer control of a report.
EndDatePeriodDisplayed (Property)
The EndDatePeriodDisplayed property is used to get the end date of the time period displayed in a Scheduler or Organizer control of a report.
InputType (Property)
The InputType property is used to identify or change the type of input supported by a control: Duration, Date, Numeric, etc.
CalendarButton (Property)
The CalendarButton property is used to determine and specify whether a Date Edit control has a button to display a popup calendar.