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.
Assignment operators
Three assignment operators are available...
Code style
A code style is used to automatically prefix the name of all the variables and project elements (windows, report controls, classes, etc.
TypeVar (Function)
Identifies the type of an expression, a variable (during a call to a procedure for example) or a control.
Constant
The constants are language elements whose value is fixed once and for all...
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...
DiagramLoad (Function)
Loads a diagram into a Diagram variable from a ".wddiag" file, a memo or a binary buffer.
iPrintDiagram (Function)
Prints a diagram from: a Diagram Editor control, a "wddiag" file, a Diagram variable....
dClear (Function)
Clears the content of an Image variable or Image control and fills it with the specified color.
Dimension (Function)
Returns the size of a variable (string, numeric, array, ...) or resizes a dynamic array.
Handling a Check Box control through programming
WINDEV, WINDEV Mobile and WEBDEV allow you to handle a Check Box control through programming......
Handling Rating controls programmatically
WINDEV, WEBDEV and WINDEV Mobile allow you to handle Rating controls programmatically....
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......
Error 530: The -- operator is not allowed
CertificateSignFile (Function)
Creates the signature of a file. This signature can be stored in a Buffer variable or in a text...
Before (Property)
variable. an event associated with a control....
After (Property)
variable. an event associated with a control....
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...
Count (Property)
a xmlNode variable. a JSON variable....
ServiceInstall (Function)
... of the Service variable.
Error 507: The '++' operator is not allowed
EmailBuildSource (Function)
... or in an Email variable.
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...
Useful parameters of a procedure
... appears in the code editor, indicating that the local variable is not used....
Using the advanced types
The advanced types (XLS variables, ggl variables, ......