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.
RedisGet (Function)
Gets the value of a key from a Redis server as a string.
HExecuteScheduledBackup (Function)
Forces the execution of a scheduled backup.
ModbusWriteFloat (Function)
Writes one or more single-precision floats to a Modbus slave, starting at a specific address.
zipListFile (Function)
Returns the list of files found in an archive.
QuickActionList (Function)
Lists the application's quick actions....
HTransactionRollbackToSavepoint (Function)
Rolls the transaction back to the savepoint.
ThreadWait (Function)
Waits for the end of the execution of the specified thread.
RedisPublish (Function)
Publishes a message on a Redis broadcast channel.
Characteristics of Table controls in a window
Table controls allow you to display and/or enter data......
Server triggers
Server triggers are stored procedures executed by the server before or after a write operation...
TimelineAddEvent(Function)
Adds an event into a TimeLine control.
HDeleteTask (Function)
Deletes a scheduled task from an HFSQL Client/Server server....
HManageTask (Function)
Enables or disables a scheduled task on an HFSQL Client/Server server....
EnumerationFromValue (Function)
Returns an enumeration value known by its associated value.
EnumerationFromName (Function)
Returns an enumeration value known by its name.
EnumerationCheckValue (Function)
Checks whether an enumeration value known by its associated value is valid.
inAppConsumeProduct (Function)
Used to consume, in an application, a product that was previously purchased by the user.
HListTask (Function)
Lists the scheduled tasks of an HFSQL Client/Server server for a given connection....
UPNPMediaPlay (Function)
Starts reading the current media on the UPnP device.
UPNPMediaOpen (Function)
Opens a media on the UPnP device.
UPNPMediaPause (Function)
Pauses the reading of the current media on the UPnP device.
UPNPMediaStop (Function)
Stops reading the current media on the UPNP device.
MapInfoPosition (Function)
Returns the coordinates (in pixels) of the point corresponding to a geographical position (latitude...
AppServerAddScheduledTask (Function)
Adds a new scheduled task to the application (site or webservice).
iPrintXLS (Function)
Prints the current worksheet of a document in "xlsx" or "xls" format.