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...
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...
WLanguage types
The different types in WLanguage are...
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.
Point2D (Variable type)
The Point2D type is used to define all the characteristics of a location represented on a Cartesian...
Polygon2D (Variable type)
The Polygon2D type is used to define all the advanced characteristics of a 2D polygon.
MultiLinestring2D (Variable type)
The MultiLinestring2D type can be used to store a collection of linestrings defined with 2D...
Linking a Scheduler control to a table or variable
You can create Scheduler controls directly linked to the data....
Organizer control linked to a table or to a variable
It is possible to create Organizer control fields directly linked to data.....
Error 20: The variable of the FOR loop should be a real
The integrated WINDEV language, WLanguage, is powerful, simple and intuitive......
OAuth2Parameters (Variable type)
The OAuth2Parameters type is used to define the information required to authenticate on a web...
Error 108: The size of the variable is not allowed
Flips an image contained in a picLayer variable with respect to a vertical axis (symmetry...
Handling Rating controls programmatically
WINDEV, WEBDEV and WINDEV Mobile allow you to handle Rating controls programmatically....
Handling a Check Box control through programming
WINDEV, WINDEV Mobile and WEBDEV allow you to handle a Check Box control through programming......
Error 530: The -- operator is not allowed
Before (Property)
variable. an event associated with a control....
After (Property)
variable. an event associated with a control....
CertificateSignFile (Function)
Creates the signature of a file. This signature can be stored in a Buffer variable or in a text...
CriticalSection (Function)
Enables a name or on-variable critical section in the statement USING ... IN.
StringToDuration (Function)
... variable.
dModifyHSL (Function)
in an Image variable....
PicRectangularSnip (Function)
Captures a rectangular area defined with the cursor and retrieves the image in a variable of type...
Month (Property)
The Month property is used to: Retrieve the month from a Date or DateTime variable. Modify...
Handling a Range Slider through programming
WINDEV allows you to handle a Range Slider control through programming......