ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2026

Declaring and using a variable
A variable is defined by name and type...
Service variable
The Service variable is used to...
Report based on a variable (Data binding)
A report based on a variable is used to directly print the information found in a WLanguage variable...
Composite variable
A composite variable contains different types of elements (members)...
TypeVar (Function)
Identifies the type of an expression, a variable (during a call to a procedure for example) or a control.
Advanced types
The advanced types of WLanguage are as follows
Checkers available in the code editor
The code editor proposes several tools used to correct the code...
WLanguage types
The different types in WLanguage are...
IsNumeric (Function)
Enables you to find out whether a variable or a control is:
  • a numeric (integer, real, currency or numeric).
  • a string that can be converted into numeric.
Assignment operators
Three assignment operators are available...
Constant
The constants are language elements whose value is fixed once and for all...
<Source>.Reset (Function)
Initializes:
  • one or all variables of file items with their default values.
  • one or all items of a Record variable with their default values.
HReset (Function)
Initializes:
  • one or all variables of file items with their default values.
  • one or all items of a Record variable with their default values.
Type inference
The type inference is used to simplify the declaration of variables when the variable type can be automatically deduced by the compiler...
Code style
A code style is used to automatically prefix the name of all the variables and project elements (windows, report controls, classes, etc.
EmailLoadAttachment (Function)
Adds an attached file to an email.
EmailSendMessage (Function)
Sends an email using a given protocol (SMTP, MS Exchange, Lotus Notes, Outlook).
hbGetTableDescription (Function)
Retrieves the description of an HBase table.
hdfsCreateDirectory (Function)
Creates a directory on a Hadoop server.
hdfsList (Function)
Lists the content of a directory found on a Hadoop server.
MongoCreateCollection (Function)
Creates a collection in a MongoDB database while specifying the options of this collection.
MongoInfo (Function)
Returns information about a MongoDB database.
Interactive notification management constants
Interactive notification management constants...
<Array>.Info (Function)
Returns the characteristics of an array: type of elements, number of dimensions, dimensions, etc.
HTMLModifyAttribute (Function)
Adds or changes an attribute of the current node of the HTML document.
PDFAddImage (Function)
Adds an image to a page in an existing PDF file.
SysNotificationProgressBarUpdate (Function)
Updates the characteristics of a progress bar present in a system notification. This new function...
Queue, Stack and List functions (prefix syntax)
List of Queue, Stack and List functions...
JSONToXML (Function)
Converts a JSON string to XML.
HDescribeLink (Function)
Describes a link between two data files through programming.
HDescribeItem (Function)
Describes a file item through programming.
Functions for managing OAuth and OpenID protocols (prefix syntax)
OAuth and OpenID protocol management functions...
ProgressBar (Property)
WLanguage proposes...
NumberColumn (Property)
The NumberColumn property is used to get and change the number of columns of an element.
Modified (Property)
The Modified property lets you know if an element has been modified.
Subject (Property)
The Subject property is used to get and change the subject of an element.