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.
Manipulating Diagram Editor controls programmatically
In WINDEV and WEBDEV, you can handle Diagram Editor controls programmatically......
The Looper control
A Looper control is used to repeat the controls found in a specific area......
The Linear Looper control
A Linear Looper control is used to display a set of controls in a horizontal scrolling list......
Arithmetic operators
The arithmetic operators are......
Handling Kanban controls programmatically
WINDEV, WEBDEV and WINDEV Mobile allow you to programmatically handle Kanban controls......
Handling a Repositionable Note control through programming
A Repositionable Note control can be handled through programming......
Parameter of a procedure/function
You have the ability to pass parameters to a procedure....
Binding controls to data
A window or page can display information from......
Reactive procedures
Reactive procedures are executed when the value of a control or variable changes......
Handling a group of controls through programming
WINDEV, WEBDEV et WINDEV Mobile allow you to handle a group of controls through programming......
Handling TimeLine controls programmatically
A TimeLine control can be......
Handling Gantt Chart controls programmatically
Handling an Image Editor control through programming
WINDEV allows you to handle an Image Editor control through programming......
Error 107: Redefinition of the parameter
HScheduledTask structure
The HScheduledTask structure is kept for backward compatibility (this structure will still...
Manipulating Segmented Button controls programmatically
WINDEV and WINDEV Mobile allow you to programmatically manipulate Segmented Button controls......
Aliases on data files: HAlias
The aliases are used to handle......