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.
Handling a Range Slider programmatically
WINDEV lets you manipulate a Range Slider control directly by programming......
EmailBuildSource (Function)
... or in an Email variable.
ServiceInstall (Function)
... of the Service variable.
Error 507: The '++' operator is not allowed
dDominantImageColor (Function)
Returns the dominant (i.e. most frequent) color of an image in an Image variable or in an Image...
URIToBuffer (Function)
... in a buffer variable.
EmailImportHTML (Function)
Imports, into the Email structure or into an Email variable, the content of an HTML file in order...
DataBinding (Property)
a variable. several variables....
Count (Property)
a xmlNode variable. a JSON variable....
Useful parameters of a procedure
... appears in the code editor, indicating that the local variable is not used....
Error 122: The name of an Automation object must be a string
Image (Keyword)
The Image keyword can correspond to: an Image variable. a property used to get and change...
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...
StringToTime (Function)
... variable.
AddColumn (Function)
Adds a column at the end of a two-dimensional array property (xlsDocument variable for example).
Using the advanced types
The advanced types (XLS variables, ggl variables, ......