ONLINE HELP
 WINDEV, WEBDEV AND WINDEV MOBILE

Version: 2026
Sitemap file for Google
To better analyze the content of the sites, the search engine of Google uses an XML file named "Sitemap" (if it is available)...
How to loop through the files of a directory?
This help page presents the different methods that can be used to loop through the files of a directory.
Database schema: Description of table structure
The database schema allows you to define the structure of tables used by the project...
Handling the external files
WINDEV, WINDEV Mobile and WEBDEV propose several functions allowing you to manage the external files from your WINDEV/WINDEV Mobile applications or from your WEBDEV websites...
Custom-Folders in the database schema
Several file descriptions can be grouped into a "Custom-Folder"...
How to populate a TreeView control using a data file?
By default, the TreeView control cannot automatically display the data coming from a data file...
FileToURI (Function)
Saves the contents of a file to a resource identified by its URI.
OBEXGetFile (Function)
Retrieves a file from a device that supports the OBEX protocol.
DriveCopyFile (Function)
Copies a single file on a remote drive to another directory on same drive.
<DiskFile variable>.Lock (Function)
Entirely or partially locks an external file.
UploadCopyFile (Example)
Usage example of the UploadCopyFile function
Handling XLS files (prefix syntax)
WINDEV and WEBDEV propose two methods for handling Excel files...
<DiskFile variable>.Create (Function)
Creates an external file.
<zipArchive variable>.ListFile (Function)
Returns the list of files found in an archive.
NetSendFile (Function)
Transmits a file to an FTP server (File Transfer Protocol) powered by WINDEV.
This function is kept for backward compatibility.
Screen,FileToScreen (External language)
Updates the controls in the window with the values from the bound items in the data file.
FileView (Function)
Opens a file in the browser.
<mongoGridFS variable>.ListFile (Function)
Retrieves the list of MongoDB files found in the MongoDB file system (gridFS).
zipDeleteFileList (Function)
Deletes a list of files from an archive.
Extensions of files created by WINDEV, WEBDEV, WINDEV Mobile
The table below presents the main extensions of files created and supported by WINDEV, WEBDEV and WINDEV Mobile...
Manipulating PDF files
PDF is one of the most widely used formats for sending and storing electronic documents...
WLanguage procedure called by zipAddFileList
WLanguage procedure ("Callback") used by zipAddFileList to manage the progress of files being added to the archive.
WDInst: Manipulating the files to install
By default, the files to install are...
KeyFileType (Property)
The KeyFileType property defines the type of encoding used for a key file.
Using WDMSG
The different steps for translating the project messages with WDMSG are as follows:
<pdfPage variable>.AddWatermark (Function)
Adds a watermark to a page of an existing PDF file.
<pdfDocument variable>.AddWatermark (Function)
Adds a watermark to all the pages of an existing PDF file.
Compilation options
The compilation options allow you to define the help system generation settings...
Print modes of a report
Several print modes are available for a report.
<Email variable>.LoadAttachment (Function)
Adds an attached file to an email.
Table,Modify (External language)
Modifies an element in a Table control.
hdfsRename (Function)
Renames a file or a directory found on a Hadoop server.
PDFMerge (Function)
Merges several PDF files into a single PDF file. Files are merged one after the other. The paths of the PDF files can be included in an array.
WDInst: Set automatic modification of tables
The automatic table modification updates the description of tables on user computers...
<Source>.ExportXLS (Function)
Exports records from a table (HFSQL or OLE DB), view or query to an Excel file (XLSX).
Tiff (Variable type)
The Tiff type is used to define the advanced characteristics of a TIFF image.
Creating a .NET assembly that can be accessed using COM
To create a.NET assembly accessible by COM, you must...
Table,Add (External language)
Adds an element to a Table control.
Native XML Connector
WINDEV and WEBDEV allow you to import and handle a definition of XML files via the data model editor...
NetDirList (Function)
Lists the directories and the files found:
  • on the FTP (File Transfer Protocol) or RPC (Remote Procedure Call) server powered by WINDEV,
  • on the client computer.
This function is kept for backward compatibility.
<Chart>.SaveBMP (Function)
Saves a chart that was previously drawn in a file in BMP format.
NumberPage (Property)
The NumberPage property is used to get:
  • the number of pages in a "multi-page" image file. This image is displayed in an Image control or in the background of a Chart control.
  • the number of pages in a PDF file displayed in an Image control.
  • the number of pages found in a PDF file displayed in a PDF Reader control.
  • the number of pages found in a DOCX file displayed in a Word Processing control.
WebserviceReadMIMEType (Function)
Returns the MIME type of the request received when calling a REST web service.
<PDF Reader>.Open (Function)
Opens a PDF file displayed in a PDF Reader control.
LooperToXML (Function)
Creates an XML file with data from a Looper control (Looper control based on a table or populated programmatically).
xlsMsgError (Function)
Returns the caption of the last error caused by an XLS function.
LogBackupDirectory (Property)
The LogBackupDirectory property is used to manage the backup directory of log files.
Comparing the project messages
The comparison between source and target text helps you find translation errors...
WLanguage procedure called by fCopyDir
WLanguage procedure ("callback") called by fCopyDir for each copied file. This procedure is used to handle the current file.
Deploying an Android application
WINDEV Mobile allows you to develop Android applications. Then, these applications can be easily deployed.
dSaveImage (Function)
dSaveImage is kept for backward compatibility.
Link properties
When creating a link, you can simply specify the destination...
<sfConnection variable>.SeekDeleted (Function)
Seeks and retrieves the records (Salesforce objects) deleted during the specified period.
<PolygonGeo variable>.Intersect (Function)
Checks whether the intersection of a geographic polygon and another geometry does not result in an empty set.
<Source>.DeactivateAutoFilter (Function)
Disables an automatic filter on the linked files when browsing an XML file.
VideoCapture (Function)
Captures the images received from the camera:
  • as an image: take a photo.
  • as a video: record a video.
AndroidiPhone/iPad Function kept for "Version-26-compatible" Camera controls.
Field filters Table linked to a table
To filter the records displayed in a Table control linked to a table, WINDEV, WEBDEV and WINDEV Mobile offer several options...
fDecrypt (Function)
Decrypts a file that was encrypted by fCrypt.
Connection (Property)
The Connection property gets and sets the connection associated with a table.
HCreationIfNotFound (Function)
Performs the following operations:
  • If the table doesn't exist, create an empty table (file with ".FIC" extension) with the index file, the full-text index file and the memo file if necessary. The function is equivalent to HCreation.
  • If the table exists, opens the table.
The RTF control (Report editor)
The "RTF" (Rich Text Format) control is used to display a formatted character string in your report...
Spreadsheet report
The report editor allows you to create "Spreadsheet" reports...
CertificateLoad (Function)
Loads a certificate from a file or a buffer.
The log process
A log is a special file that contains the history of all changes made to one or more tables over a given period of time (date the table was created, last automatic data modification, last backup created with WDLog, etc.)
Decrypt (Function)
Decrypts a string that was encrypted by Encrypt.
INIWrite (Function)
Writes a specific value into an INI file (or into a file structured like an.INI file).
List of reserved words
The ReturnedValue property is used to:
  • Get and change the value returned by a window, page or report.
  • Get and change the value returned by an option in a Radio Button control.
WDOptimizer: Presentation
The different operations that can be performed with WDOptimizer are as follows ...
Creating a delete query
A delete query (corresponding SQL statement...
<Source>.Version (Function)
Used to find out:
  • whether the content of a file was modified.
  • whether the content of a file used by a query was modified.
Setup by stand-alone physical media
A setup by stand-alone physical media allows you to provide a media that contains all the files required for installing and running a site...
Cardinalities (Data model editor)
Cardinalities are used to count the relationships between two tables....
<Table>.ModifyLine (Function)
Modifies a row in:
  • a Table control,
  • a TreeView Table control.
PicSave (Function)
Saves the image found:
  • in an Image Editor control.
  • in a WDPic variable.
SCP functions
The SCP functions are as follows ...
OCRExtractTextBlock (Function)
Returns all the text blocks of an image.
DisplayedItem (Property)
The DisplayedItem property is used to:
  • Find out the item or the variable displayed by the control.
  • Modify the item or the variable displayed by the control.
Code Editor control functions (prefix syntax)
The following functions are used to manipulate Code Editor controls using prefix syntax:
Importing a CSS style sheet
WEBDEV gives you the ability to import a CSS style sheet into a WEBDEV project...
Deploying an application that uses an external component
An application that uses one or more external components is deployed in the same way as a standard application...
Configuring the assisted universal replication
If your application uses assisted universal replication via a .WER file, the setup creation wizard proposes to configure the setup to install the different tools required for this type of replication.
Writing an email
Writing an email in WLanguage consists in filling the email structure of WLanguage...
The Spreadsheet control
Spreadsheets are one of the most used office tools...
(No title )
Describes a table programmatically.
Metatypes in the database schema
A metatype is a combination of characteristics of an item and a bound control...
Unalterable tables
This feature is used to signal that a table cannot be modified after writing...
<Image>.SaveGIF (Function)
Saves an image:
  • in a file in GIF format.
  • in memory.
<Window>.EdSave (Function)
Saves the changes made when the "Modification of UI by the end user" mode is enabled.
DownloadGetInfo (Function)
Retrieves the details of a download present in the download manager.
Global procedure/function
A global procedure can be used in all the processes or events of the project.
<Source>.ChangeDir (Function)
Changes the path to a table (i.e. directory in which the file will be handled).
ScanToImage (Function)
Retrieves a document from a scanner in a variable of type Image.
6. Printing the product catalog
WINDEV Mobile Tutorial - Developing an Android and iOS application Lesson 6 - Printing the product catalog - 20 min
Hasp constants
The Hasp constants are as follows...
Deploying an Android application
WINDEV Mobile Tutorial: Deploying an Android application 10 min
Choosing the action associated with a WEBDEV button
Whatever the type of button, it is possible to associate an action with it...
Coloring a row, a column or a cell found in a control (AAF)
To simplify the reading in the controls used to view large volumes of data, the end user has the ability to color the data found in the control...
zipOpen (Function)
Opens an existing archive.
MVP RAD
WINDEV proposes an MVP RAD that generates the "table" and "form" windows as well as the necessary Presenter and Model classes...
Sidebar control features
The main characteristics of a Sidebar control can be configured...
<Connection variable>.TransactionStart (Function)
Starts a transaction on the tables (HFSQL or accessed via Native Access) and creates the transaction table.
OKCancel (Function)
Displays a message in a standard dialog box that proposes "OK" and "Cancel" and returns the user's choice.
AnimationGetParameter (Function)
Reads the value of one of the animation parameters defined for an Image or Static Text control.
Pivot Table control functions (prefix syntax)
Pivot Table control functions (prefix syntax)
Report viewer: "Search" pane
A search feature is automatically available when previewing a report...
WDMap: Print records
WDMAP allows you to print the records found in a table...
HMigrateLinkedCompositeKey (Function)
Migrates the values of the linked composite keys coming from a file in Hyper File 5.5 format to the HFSQL Classic format.
HCreateServerTrigger (Function)
Adds or modifies a server trigger on the HFSQL server.
<Code Editor>.Load (Function)
Loads a WLanguage code file in a Code Editor control.
fMemOpen (Function)
Opens a memory area shared between several applications.
Yousign
It is now common for individuals or businesses to sign contracts electronically...
dRectangle (Function)
Draws a rectangle:
  • in an Image control,
  • in an Image variable,
  • in a WDPic variable (on the background layer),
  • in a picLayer variable.
Zombie tables and items
During the life of an application, items live and die...
OpenChild (Function)
Opens a non-modal child window.
<Table>.Count (Function)
Returns:
  • the number of columns found in a Table or TreeView Table control.
  • the number of rows found in a Table or TreeView Table control.
KeyExpression (Property)
The KeyExpression property is used to set the different components of a composite key.
grWndSize (Function)
Defines the size of the window containing the chart.
HRecordDate (Function)
Returns the date and time of last write operation performed on a record in an HFSQL table (Classic or Client/Server).
HInitSubscriber (Function)
Initializes the range of automatic identifiers for the description file of subscriber replica (".rpl" extension).
<Source>.Previous (Function)
Sets the position on the previous record of the table according to a browse item.
xmlSignatureVerification (Variable type)
The xmlSignatureVerification type is used to define the information required to verify an XML signature.
docElementCheckBox (Variable type)
The docElementCheckBox type allows you to define all the advanced characteristics of a check box used in a form.
HCreationIfNotFound (Example)
Example of the HCreationIfNotFound function
ThreadStop (Function)
Stops a secondary thread. Function not recommended.
2. WEBDEV administrator in practice
Builds a sequence of characters containing a line.
Defining colors in Table controls
The colors of a Table control (row background, text of rows, etc.) are defined in the control description...
zipFilter (Function)
Returns the list of archive formats supported by the current platform, in the format expected by the filter of fSelect.
Creating an Android widget
Widgets are small applications that can be displayed on the home screen of phones or tablets...
mqttSession (Variable type)
The mqttSession type is used to define the parameters for connecting to the MQTT broker.
Replication of HFSQL servers (Programming)
To implement a replication of HFSQL servers through programming, WLanguage...
pdfAttachment (Variable type)
The pdfAttachment type is used to define all the advanced characteristics of an attachment in a PDF document.
Trace (Function)
Displays the requested information (content of a control, for example) in a window opened next to the current window.
docElement (Variable type)
The docElement type is used to handle each element found in a docParagraph variable.
Creating an interactive diagram
The Diagram Editor control allows end users to create and edit diagrams...
FreeAWPContext (Function)
Frees the AWP context in advance (on disk) to allow the other call on the same AWP context to be processed in parallel.
spIterationCount (Property)
The spIterationCount property is used to:
  • Get the iteration count of the hash algorithm used for an item of type "Password". This property can be used for items of type "Password" defined in the data model editor or programmatically.
  • Sets the iteration count of the hash algorithm used for an item of type "Password" (only for "Password" items described programmatically).
LogDirectory (Property)
The LogDirectory property is used to manage the directory of the log file described in the database schema.
Manipulating Word Processing controls programmatically
Word Processing controls can be manipulated programmatically...
Debugging a connection to an HFSQL server
The stored procedures and the triggers are debugged from the environment, with real execution on the server...
BitmapInfo (Function)
Retrieves the characteristics of an image file or the characteristics of a PDF file:
  • format.
  • width and height.
  • number of bits per pixel.
  • area of transparency.
  • alpha channel.
NetClientMessageBox (Function)
Displays a dialog box on each client computer connected to the server.
This function is kept for backward compatibility.
Nation (Function)
Defines or identifies the display language (captions, messages, ...) used for the windows, pages, reports and controls.
Combination (Variable type)
A combination is a set of options.
<Source>.Forward (Function)
Moves several records forward from the current position in the table, according to a specified item.
I was using Visual Basic with WINDEV 5.5. How to do it in WINDEV 2026?
You have the ability to use external languages with WINDEV...
WEBDEV administrator: Installed sites
The "Sites" tab provides information about the dynamic WEBDEV websites installed on the computer...
dInvertColor (Function)
Reverses the colors:
  • in an Image control,
  • in an Image variable,
  • in a WDPic variable (on the background layer),
  • in a picLayer variable.
OpenSibling (Function)
Opens a non-modal sibling window.
Print functions
List of print functions
<Source>.ReadNext (Function)
Sets the position on the next table record according to a browse item.
dChord (Function)
Draws the chord of a circle (intersection between an ellipse and a straight line):
  • in an Image control,
  • in an Image variable,
  • in a WDPic variable (on the background layer),
  • in a picLayer variable.
7. Sending an email
WINDEV Tutorial: Managing data in a WINDEV application Lesson 7 - Sending an email - 20 min
dModifySaturation (Function)
Modifies the saturation of an image found:
  • in an Image control,
  • in an Image variable.
HTTPGetResult (Function)
Retrieves the result or the header of last HTTP request run.
FTPCommand (Function)
Sends a specific FTP command to a server.
Modifying the query content
The queries are used to easily select the records coming from one or more files, matching one or more selection criteria, ...
Managing the executables (WLanguage functions)
WINDEV, WEBDEV and WINDEV Mobile propose different functions for managing executables from a WINDEV application, from a WINDEV Mobile application or from a WEBDEV website...
Binding a Scrollbar control to an item
A scrollbar can be bound to an item in a table, query, etc.
spDerivation (Property)
The spDerivation property is used to:
  • Get the key derivation function used to hash an item of type "Password". This property can be used for items of type "Password" defined in the data model editor or programmatically.
  • Set the key derivation function used for hashing (only for "Password" items defined programmatically).
2. WLanguage functions specific to phones
Callback from the function PartageProximitéDemandeConnexion1.Cb for the parameter CallbackConnexion
HInfoLog (Function)
Returns information about the server logs.
LooperSearch (Function)
Searches for a value in an attribute of a Looper control.
Referring to an element in a WLanguage event / process
Used to manage the horizontal position (X-coordinate) of print cursor in the page.
5. User Groupware in practice
An object diagram represents a set of objects and how they relate to each other at a certain moment in time...
How to retrieve the bugs or suggestions of my users?
The different Control Centers provided with WINDEV allow you to easily manage the user feedback for your applications...
3. Multi-criteria search
WINDEV Tutorial: Managing data in a WINDEV application Lesson 3 - Multi-criteria search - 40 min
NotesOpenDatabase (Function)
Gives access to the documents managed by Lotus Notes.
OOP concepts
A class contains the description of a data structure (members) and the processes (methods) that handle this structure.
NotesNbAttachment (Function)
Returns the number of files attached to an item of the current document in Lotus Notes.
SQLGetCol (Function)
Retrieves the content of the specified column from the query result, for the current line.
Properties associated with reports and controls
List of properties associated with the reports and their controls
<Source>.ReadSeekLast (Function)
Sets the position on the last record whose value for a specific item is less than or equal to a sought value (exact-match search).
4. HFSQL Classic
MyChildWindow is used to handle the child window of the current window.
The Pager control
The Pager control is used to quickly access the records of a Table or Looper control displayed on several pages...
ReplicDeleteSubscription (Function)
Deletes the subscription of a replication on the replication server.
DisplayMask (Property)
The DisplayMask property is used to:
  • Get the display mask.
  • Modify the display mask.
This display mask is displayed when the control is in read-only or when the control does not have focus.
The OLE control
The OLE control is used to handle an OLE object...
Managing assertions
The main available features are as follows:
WINDEV Mobile 2026: New WLanguage features
Version 2026 includes new and improved functions, properties and data types, ...
Constants for managing XML documents
List of constants used by the functions for managing XML documents.
5. User Groupware in practice
Closes the current browser window and stops the execution of the current code.
TreeView Table control properties
List of properties associated with the TreeView Table control
<Source>.EndNoModif (Function)
Unlocks a file that was locked by the same program with HNoModif.
fDataDir (Function)
Returns the full path of the directory of HFSQL tables specified by the user when installing the application.
New products brochure 28: WINDEV new products
New features in WINDEV 28 presented in the New Features brochure.
Manager of automated tests
The test manager is used to...
gpwLogin (Function)
Connects a user to an application that uses the User Groupware.
Notifications of an HFSQL server
A server may encounter problems without any user (or developer) noticing anything.
For example:
  • a scheduled task may fail,
  • an automatic backup may fail,
  • a node may become inactive in an HFSQL cluster, ...
1. WLanguage functions specific to WEBDEV
Seeks and retrieves the records (Salesforce objects) deleted during the specified period.
Recycle bin functions
List of functions for managing the recycle bin
Page constants
List of constants used by page functions.
Keyword properties
You can change the characteristics of a keyword at any time in the keyword properties...
<Buffer>.AnsiToUnicode (Function)
Converts a buffer containing an ANSI string (Windows) to a buffer containing a UNICODE string.
Table control properties
You can manipulate Table controls in a window or page using the following WLanguage properties...
Using objects
To access a class, the object must be declared as being part of the class to handle, this is called object instantiation...
1. Components provided with WINDEV
WINDEV is provided with projects that contain components.
Instantiating an object
To access a class, the object must be declared as being part of the class to handle, this is called object instantiation...
1. Application overview
WINDEV Mobile tutorial: Developing an Android and iOS application Lesson 1 - Application overview - 10 min
Configuring the titles of columns (Table control)
The title of table columns is an important element of Table control...
HExecuteQuery (Function)
Declares a query created in the query editor to the HFSQL engine and runs this query.
Generating SQL scripts
The content of an analysis can be exported in the format of SQL scripts for a specified database (SQL Server, Oracle, ...
ExeInfo (Function)
Retrieves the specified information about the version of an executable or DLL.
Display modes, transparency and symmetry of an image
An image can be displayed in a window, a window control, a report control, a page control or a block according to several display modes.
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