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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)...
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...
<Connection variable>.DeleteDatabase (Function)
Deletes a database located on an HFSQL server.
<Connection variable>.DeleteSet (Function)
Deletes a set of stored procedures from an HFSQL server.
<Connection variable>.DeleteFile (Function)
Deletes the HFSQL data files (.fic, .ndx, .ftx and .mmo files if they exist) from the server.
<Connection variable>.DeleteGroup (Function)
Deletes (from the server) a group of users associated with a connection.
<Connection variable>.SimulateNetwork (Function)
Simulates the operating mode of HFSQL Client/Server on an ADSL or 3G network....
<Connection variable>.DeleteLink (Function)
Deletes an integrity rule between two data files on the server.
<Connection variable>.DeleteScheduledOptimization (Function)
Deletes a scheduled optimization task from HFSQL Client/Server data files....
<Connection variable>.DeleteParameter (Function)
Deletes a parameter previously saved by HSaveParameter.
<Connection variable>.DeleteScheduling (Function)
Deletes a scheduled task found on an HFSQL server: stored procedure, backup, optimization,...
<Connection variable>.DeleteDirectory (Function)
Deletes a directory from an HFSQL Client/Server database....
<Connection variable>.DeleteQuery (Function)
Deletes a query (used by stored procedures) from an HFSQL server.
<Connection variable>.DeleteBackup (Function)
Deletes a backup previously created with HBackup.
<Connection variable>.DeleteScheduledBackup (Function)
Deletes a scheduled backup from an HFSQL Client/Server server....
<Connection variable>.DeleteTask (Function)
Deletes a scheduled task from an HFSQL Client/Server server....
<Connection variable>.DeleteUser (Function)
Deletes a user associated with a connection to the HFSQL server.
<Connection variable>.Transaction (Function)
Starts a transaction on the data files (HFSQL or accessed via Native Access) and creates...
<Connection variable>.TransactionCancel (Function)
If a transaction is in progress, cancels all the operations performed on the data files...
<Connection variable>.TransactionStart (Function)
Starts a transaction on the data files (HFSQL or accessed via Native Access) and creates...
<Connection variable>.TransactionEnd (Function)
Validates the current transaction: the modifications performed on the data file since the start...
<Connection variable>.TransactionIsolation (Function)
Configures the isolation mode of transactions for a connection to an HFSQL server.
<Connection variable>.TransactionList (Function)
Returns the list of current or interrupted transactions on the server for the specified connection.
<Connection variable>.CheckServerUpdate (Function)
Checks for the latest version of the HFSQL server that can be automatically updated.
<WDPic variable>.DrawArc (Function)
Draws a circle arc or an ellipse arc in a WDPic variable.
<picLayer variable>.DrawArc (Function)
Draws a circle arc or an ellipse arc in a picLayer variable.
<WDPic variable>.DrawCircle (Function)
Draws a circle or an ellipse in a WDPic variable.