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 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.
Constants for managing Gantt charts
<Array>.Shuffle (Function)
Shuffles the elements of a WLanguage array.
Functions for managing the Combinations and Enumerations
EmailExpunge (Function)
Destroys all the deleted emails marked as deleted ("Deleted" status) from the current folder...
hdfsDelete (Function)
Deletes a file or directory from a Hadoop server.
hdfsRename (Function)
Renames a file or a directory found on a Hadoop server.
hdfsCopyFrom (Function)
Copies a file found on a Hadoop server to the local computer.
hdfsCopyTo (Function)
Copies a file located on the local machine to a Hadoop server.
hdfsOpenConnection (Function)
Opens a connection to a Hadoop server.
hdfsCloseConnection (Function)
Closes a connection to a Hadoop server.
MongoAdd (Function)
Adds one or more documents into a collection of MongoDB database.
<Image>.DrawBorder (Function)
Draws the borders in an Image control.
<Array>.Count (Function)
Returns: the number of elements in a one-dimensional array. the number of rows...
KeyExpression (Property)
The KeyExpression property is used to set the different components of a composite key.
<Array>.Copy (Function)
Copies the content of an array to another array.
ArrayCopy (Function)
Copies the content of an array to another array.
PDFControlInfoXY (Function)
Returns the characteristics of an interactive control currently hovered over in a PDF Reader...
PDFVerifySignatures (Function)
Checks the validity of PDF signatures. Note: This function is only available from version 2025...
ArrayCount (Function)
Returns: the number of elements in a one-dimensional array. the number of rows...
xlsUnmergeCell (Function)
Unmerges a range of cells.