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...
<Image variable>.ModifyOpacity (Function)
Modifies the opacity of an image (which means the alpha channel of the image).
<Connection variable>.RegenerateFile (Function)
Regenerates a data file from its log.
<WDPic variable>.MergeLayer (Function)
Merges the layers of a WDPic image.
<WDPic variable>.Resize (Function)
Resizes a WDPic image.
<Thread variable>.Wait (Function)
Waits for the end of the execution of the specified thread.
<WDPic variable>.Rotation (Function)
Rotates a WDPic image.
<WDPic variable>.Save (Function)
Saves the image contained in a WDPic variable.
<Connection variable>.AddLink (Function)
Adds an integrity rule between two files on the server.
<Connection variable>.AddScheduledOptimization (Function)
Adds an optimization task of HFSQL Client/Server data files....
<Connection variable>.AddScheduling (Function)
Creates a scheduled task on an HFSQL server: stored procedure, backup, optimization,...
<Connection variable>.AddScheduledBackup (Function)
Adds a scheduling for full backup (with or without differential backup) on the server defined...
<Connection variable>.AddTask (Function)
Adds a scheduled task on the server defined by the connection.
<Connection variable>.CancelBackup (Function)
Cancels a current backup.
<Connection variable>.StopServer (Function)
Stops an HFSQL server.
<Connection variable>.LoadParameter (Function)
Reads a parameter that was saved from a stored procedure by HSaveParameter.
<Connection variable>.CopyFile (Function)
Copies an HFSQL data file (.fic, .ndx and .mmo files if they exist): from the HFSQL server...
<Connection variable>.StartServerUpdate (Function)
Used to immediately start the automatic server update.
<Connection variable>.DisconnectClient (Function)
Displays a message on the Client computer(s) and disconnects the application.
<Connection variable>.DeactivateServerTrigger (Function)
Disables a HFSQL Client/Server server trigger on a server....
<Connection variable>.DeleteServerTrigger (Function)
Deletes a server trigger.
<Connection variable>.DuplicateDatabase (Function)
Duplicates the database associated with a connection on an HFSQL server.
<Connection variable>.SendMessageToClient (Function)
Displays a message on the client computers.
<Connection variable>.ExecuteScheduling (Function)
Immediately runs a scheduled task regardless of its schedule: stored procedure, backup,...
<Connection variable>.ExecuteProcedure (Function)
Runs a stored procedure.
<Connection variable>.ExecuteScheduledBackup (Function)
Forces the execution of a scheduled backup.