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...
Constant
The constants are language elements whose value is fixed once and for all...
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.
WLanguage types
The different types in WLanguage are...
Assignment operators
Three assignment operators are available...
<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.
<Connection variable>.AddTask (Function)
Adds a scheduled task on the server defined by the connection.
<Connection variable>.ModifyScheduledOptimization (Function)
Modifies a scheduled optimization task on the HFSQL server defined by the connection.
<htmlNode variable>.UnwrapAllChildren (Function)
Deletes the specified node in an HTML document without deleting its children, which take its place.
<Diagram variable>.StartModification (Function)
Indicates the start of a series of actions performed in a variable of type Diagram in a single...
<DiskFile variable>.FileName (Function)
Returns the name of an external file currently open.
<sfConnection variable>.Merge (Function)
Merges the Salesforce records (also called Salesforce objects).
<gglConnection variable>.ListContactByRequest (Function)
Retrieves a list of contacts from custom parameters.
<Connection variable>.NotifAddEmailRecipient (Function)
Adds recipients for the notifications sent by email.
<mqttSession variable>.Publish (Function)
Publishes a message on the MQTT broker.
<picLayer variable>.Difference (Function)
Compares two images and returns a grayscale image and a percentage determining the differences...
<htmlDocument variable>.Save (Function)
Saves the content of an htmlDocument variable to an HTML file.
<gglConnection variable>.GetCalendar (Function)
Retrieves a Google calendar and its events according to its title or identifier.
<Connection variable>.InfoView (Function)
Returns information about a materialized view.
<zipArchive variable>.CreateExe (Function)
Creates a self-extracting archive as a 32-bit executable (.EXE).
<Document variable>.Add (Function)
Adds an element, document, paragraph, text, image or fragment to the end of a Document variable..
<WDPic variable>.Difference (Function)
Compares two images and returns a grayscale image and a percentage determining the differences...
<Connection variable>.ModifyServerProperty (Function)
Modifies the properties of an HFSQL server.
<picLayer variable>.StartDrawing (Function)
... variable.
<upnpDevice variable>.ModifyMute (Function)
Modifies the 'Mute' status of a UPnP device....
<ftpConnection variable>.DirExist (Function)
Checks for a directory on an FTP server. This new function is available from WINDEV Suite SaaS...
Link Description (Variable type)
A Link Description variable is used to describe a link between two tables programmatically.
<Connection variable>.RSListConfig (Function)
Lists the replications available on a master HFSQL server.
<Notification variable>.Delete (Function)
Removes a notification from the system bar.
<PolygonGeo variable>.Area (Function)
Calculates the area of a polygon defined using geographic coordinates.
<Connection variable>.ModifyServerRights (Function)
Sets the rights granted to a user or group on an HFSQL server.