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...
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.
Assignment operators
Three assignment operators are available...
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.
Member (Property)
When used on Variant variables, the Member property is used to get the array of named elements.
<Control>.Rectangle (Function)
Returns the coordinates of the rectangle corresponding to the specified area of a control.
WLanguageCodeGetCSSDeclarations (Function)
Returns a CSS style sheet corresponding to a WLanguage code theme.
GetGUID (Function)
Calculates a globally unique identifier (named "GUID"), whose size is: equal to 16 bytes,...
ControlExist (Function)
Checks the existence of a control (or group of controls) in a window, in a page or in a report.
MemcachedDeleteKeyGroup (Function)
Deletes a key from the Memcached cache on a group of servers.
MemcachedAdd (Function)
Adds a new key/value couple into the Memcached cache....
WLanguage procedure called by AuthIdentify
WLanguage procedure ("Callback") called by AuthIdentify during the authentication.
Dynamic Automation object
A dynamic automation object is an automation object allocated upon request, during the program...
URIGetInfo (Function)
Retrieves information of a URI resource.
MQTT functions (prefix syntax)
The following functions are used to manage MQTT clients...
<Array>.AddSorted (Function)
Adds an element to a one-dimensional WLanguage array taking into account: the sort criteria...
HModifyScheduledBackup (Function)
Modifies a backup scheduling.
MongoDeleteAll (Function)
Deletes all the documents (corresponding to the specified filter) from a collection of a MongoDB...
<Array>.Add (Function)
Adds an element in last position: of a one-dimensional WLanguage array. of an advanced array...
<Array>.AddLine (Function)
Adds a row at the end: of a one- or two-dimensional WLanguage array. of an advanced...
ArrayAddSorted (Function)
Adds an element to a one-dimensional WLanguage array taking into account: the sort criteria...
<Source>.Index (Function)
Rebuilds the file index (".NDX" file).
GeometryCoveredBy (Function)
Determines if every point of geometry A lies inside or on the boundary of geometry B.
QuickActionAdd (Function)
Adds a new quick action to the application.
QuickActionRemove (Function)
Removes a quick action defined for the application.
SFForwardQuery (Function)
Continues to run a SOQL query (Salesforce Object Query Language) on the records of a Salesforce...