ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2025

Splitting Business logic / UI code
During the development cycle of an application, the code that is specific to the interface (UI) and the code that is specific to the business logic (access to databases, etc.) are often "mixed"...
WDLog: Restoring HFSQL data files
WDLog is used to restore the data files saved by WDLog......
Automatic data file modification
The automatic data file modification updates the description of data files on user computers......
XLS file handling functions
List of functions for managing XLS files...
Errors while managing data files
When an HFSQL function fails (returns False for example), the corresponding error number is returned by HError......
How to loop through a file using filters?
HScheduledTask structure
The HScheduledTask structure is kept for backward compatibility (this structure will still be supported in the forthcoming version)....
WDINT setup
WDTrans: Delete the records in transaction
Transforms all the records "in transaction" into "normal" records if these records do not belong to a transaction currently in progress......
TwainToPDF (Function)
Allows you to: save the document coming from the Twain device in a PDF file. view the document coming from the Twain device in the user interface of device. save the document coming from the Twain device directly in memory in PDF format (in a buffer)....
nWDEvaluate: Evaluating the value of an element
Evaluating the value of an element......
TwainToTIFF (Function)
Allows you to: save the document coming from the Twain device in a TIFF file. view the document coming from the Twain device in the user interface of device. save the document coming from the Twain device directly in memory in TIFF format (in a buffer)....
ExtendedInfo (Property)
The ExtendedInfo property is used to get additional information: about a data file accessed by a Native Connector or HFSQL Client/Server. about an item accessed by a Native Connector or HFSQL Client/Server. about a connection. In this case, this property is equivalent to CtExtendedInfo....
TwainToGIF (Function)
Allows you to: save the document coming from the Twain device in a GIF file. view the document coming from the Twain device in the user interface of device. save the document coming from the Twain device directly in memory in GIF format (in a buffer)....
TwainToJPEG (Function)
Allows you to: save the document coming from the Twain device in a JPEG file. view the document coming from the Twain device in the user interface of device. save the document coming from the Twain device directly in memory in JPEG format (in a buffer)....
Binding Bar Code controls to items
A Bar Code control can be bound to an item in a data file, query, etc....
Creating links
Links help users navigate the help system......
Locking data files: correspondence between WINDEV 5.5 and the later versions
Feedback component
The Feedback component is a component provided with WINDEV......
Spreadsheet control in a report
The spreadsheet is one of the most often used business tools. You have the ability to create reports that print the data found in a spreadsheet....
WDInst: Additional options (summary, license, etc.)
When installing the application, you have the ability to display......
Entity of a CDM
To group information according the MERISE method, entities must be created......
Programming Table controls based on a data file
This page explains how to program Table controls based on a data file......
Unavailable functions and properties
Some functions and properties have been removed from WLanguage......
Native Oracle Connector: Running the same query several times
In some cases, it may be useful to run the same query multiple times while modifying one or more parameters......