ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2026

PDFAddWatermark (Function)
Adds a watermark to all or some pages of an existing PDF file.
Key and referential integrity
In a database schema, the "Key" items are also used to manage the consistency of data (called referential integrity)......
Synchronizing the database schema with external databases
The database schema must be synchronized with an external database if it uses......
How to create a query with external join?
In SQL language, an external join is used to exclude or include file records with or without correspondences in the linked files......
<pdfDocument variable>.AddWatermark (Function)
Adds a watermark to all the pages of an existing PDF file.
TimePicker (Function)
Opens the system time picker.
DateTime (Type of variable)
The DateTime type enables you to easily handle a date and a time...
Year (Property)
The Year property is used to: Get the year from a Date or DateTime variable or item. Change the year in a Date or DateTime variable or item....
Telemetry: Overview
From version 21, WINDEV proposes advanced statistics regarding the use of your WINDEV applications via the telemetry......
zipExtractFileList (Function)
Extracts and decompresses a list of files found in an archive to a physical location.
zipCurrentFile (Function)
Returns the name of the archived file currently handled by the functions for adding and extracting files.
zipAddFile (Function)
Automatically adds and compresses any type of file into a CAB, ZIP, WDZ, 7z, TAR, gzip or TGZ (TAR.GZ) archive.
<Polygon2D variable>.Union (Function)
Returns a geometry corresponding to the union between a 2D polygon and another geometry.
Managing the certificates
Signing a file allows you to check that the file was not modified or altered since it was signed. The signature also allows you to check the issuer identity....
Mashup
The concept of Mashup consists in aggregating data coming from different software, different services, different data sources, ......
TabOffset (Property)
The TabOffset property is used to get and change the offset between the border of a Tab or Ribbon control and the tab buttons.
Currencies
A currency is a real coded on 10 bytes....
gpwOpenConnection (Function)
Opens a connection to a specific Client/Server database to manage the files of user groupware in Client/Server mode....
DateTimeToReal (Function)
Converts a date and time to an 8-byte real.
TelemetrySendData (Function)
Sends telemetry data immediately.