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.
ArrayMove (Function)
Allows you to: move an element in a one-dimensional WLanguage array or in an advanced array...
GeometryIsValid (Function)
Checks whether the specified geometry is valid according to the OGC rules.
XMLToJSON (Function)
Converts an XML string to JSON.
ArraySeek (Function)
Searches for the index of an element in a WLanguage array.
BTLEListDevice (Function)
Returns the list of accessible Bluetooth Low Energy devices.
EmailMessageLength (Function)
Calculates the size of specified message (without loading the message).
AIDetect (Function)
Detects various elements in an image: objects, faces, etc. This detection is made possible...
<Word Processing>.Add (Function)
Adds an element, document, paragraph, text, image or fragment to the end of a Word Processing...
NotifModify (Function)
Modifies a notification currently displayed in the system bar of the device.
GanttAddLink (Function)
Creates an "End to Start" link between two tasks displayed in a Gantt Chart column found in a Table...
Null (Property)
The Null property is used to: Assign NULL to the item for the current record. Find...
ContactListSource (Function)
Lists the sources (or accounts) of the contacts saved on the device.
HAddScheduledOptimization (Function)
Adds an optimization task of HFSQL Client/Server tables....
AppointmentListCalendar (Function)
Lists the calendars available on the mobile device (Android/iOS)....
GeometryCorrect (Function)
Returns a corrected version of the specified geometry.
NotifDelete (Function)
Removes a notification from the system bar.
DriveSendFile (Function)
Sends a file (present on the user's machine) to an Drive (remote disk)....
Linestring2DAddPoint (Function)
Adds a new point to a 2D linestring.
PDFGetSignature (Function)
Gets the signature of a PDF document as a buffer.
GglFillCalendarByRequest (Function)
Fills a calendar that was retrieved beforehand: the events corresponding to the calendar...
HDescribeFullTextIndex (Function)
Describes a full-text index of data file created through programming.
Managing parallel tasks
The computers are becoming more and more powerful......
ParallelTaskWait (Function)
Waits for the execution of a parallel task.