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.
<Array>.Insert (Function)
Inserts an element at a given position: into a one-dimensional array. into an associative...
MongoGridFSGetFile (Function)
Retrieves (on the local computer) a file identified by its name and found in a MongoDB file system.
<Array>.Reverse (Function)
Reverses the content of a one-dimensional array.
PDFAddWatermark (Function)
Adds a watermark to all or some pages of an existing PDF file.
EmailSeekFirst (Function)
Finds one or more emails according to the criteria specified in the messaging software (Outlook,...
AuthIdentify (Function)
Performs an authentication using the OAuth 2.0 protocol on any web service.
MongoGridFSGetFileByID (Function)
Retrieves (on the local computer) a file identified by its identifier and found in a MongoDB file...
ArrayReverse (Function)
Reverses the content of a one-dimensional array.
Move (Function)
Allows you to: move an element in a one-dimensional WLanguage array or in an advanced array...
Seek (Function)
Searches for the index of an element in a WLanguage array.
SwapLine (Function)
Used to swap two rows in a two-dimensional array or in an advanced array property.
HTMLWrap (Function)
Wraps the specified node in a given node of an HTML document.
HTMLWrapAllChildren (Function)
Wraps all children of the given node in a new node in an HTML document.
HTMLRemoveChild (Function)
Removes a given node in the current node of an HTML document.
HTMLBuildString (Function)
Generates a UTF-8 string containing an HTML document.
WebSocketExecute (Function)
Executes a procedure in the context of a client connected to the WebSocket server.
DiagramToSVG (Function)
Exports a diagram to an SVG image.
DiagramSearch (Function)
Searches for shapes containing a specific text in a diagram.
ArrayContain (Function)
Searches for an element in a WLanguage array. This new function is available from WINDEV Suite...
Automatic completion
The automatic completion helps you write WLanguage code in your applications......