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)...
Advanced types
The advanced types of WLanguage are as follows
<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.
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.
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.
Code style
A code style is used to automatically prefix the name of all the variables and project elements (windows, report controls, classes, etc.
Constant
The constants are language elements whose value is fixed once and for all...
TypeVar (Function)
Identifies the type of an expression, a variable (during a call to a procedure for example) or a control.
Assignment operators
Three assignment operators are available...
Checkers available in the code editor
The code editor proposes several tools used to correct the code...
Type inference
The type inference is used to simplify the declaration of variables when the variable type can be automatically deduced by the compiler...
Error 122: The name of an Automation object must be a string
fReadLineRegularExpression (Function)
... and assigns them to a variable.
FOR statement
The statement block is repeated while a control variable is modified and compared to a limit value...
Image (Keyword)
The Image keyword can correspond to: an Image variable. a property used to get and change...
Handling List Box controls programmatically
WINDEV, WEBDEV and WINDEV Mobile allow you to programmatically handle List Box controls....
<EmailPOP3Session variable>.GetAll (Function)
Retrieves all the emails found on a POP3 server.
Second (Property)
or Duration variable. Modify the number of seconds in a Time, DateTime or Duration variable. Retrieve...
Organizer control linked to a data file or to a variable
You have the ability to create Organizer controls linked to data....
Linking a Scheduler control to a data file or variable
You can create Scheduler controls directly linked to the data....
Error 101: Declaration of global variable not allowed
TmeLine control linked to a data file or variable
You can create TimeLine controls directly linked to the data....
FOR EACH/FOR ALL statement (loop through a variable of type XMLReader)
The FOR EACH statement loops through a variable of type xmlReader in various ways: Loop...
<emailPOP3Session variable>.NbMessage (Function)
Returns the number of incoming messages on the email server (POP3 protocol only).
<emailPOP3Session variable>.StartSession (Function)
Starts a POP3 session.
Millisecond (Property)
or Duration variable. Modify the number of milliseconds in a Time, DateTime or Duration variable. Retrieve...
Keyboard Variable (Using physical keyboards on Android)
The Keyboard variable makes it possible to retrieve the parameters of the events of a physical...
<emailPOP3Session variable>.CloseSession (Function)
Closes a POP3 session.
<Polygon2D variable>.Cover (Function)
Determines if geometry A (of type 2D polygon) covers geometry B.
<Polygon2D variable>.Perimeter (Function)
Calculates the perimeter of a polygon defined using 2D coordinates.
<Linestring2D variable>.AddPoint (Function)
Adds a new point to a 2D linestring.
<Polygon2D variable>.IsValid (Function)
Checks whether the specified 2D polygon is valid according to the OGC rules.
Hour (Keyword)
The Hour keyword can correspond to: the Time variable. the Time property which is used to get...
DataBinding (Property)
and: an item in a data file. a variable. several variables....