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...
The List Box control
The List Box control is used to display a list of elements and to select one or more elements...
Printing bar codes
WINDEV, WEBDEV and WINDEV Mobile allow you to print bar codes....
'Image gallery' Looper control
The "Image gallery" Looper control is used to manage the display of a set of images without...
OpenAPIToHTTP (Function)
Builds the HTTP request to call a function of an API. It can then be sent using HTTPSend.
SQLColumn (Function)
Returns the characteristics of all the columns (or items): for a given table. for a given...
<Image>.DrawPolyline (Function)
Draws a line composed of multiple segments in an Image control.
FTPSize (Example)
Usage example of the FTPSize function
<Organizer>.DeleteAppointment (Function)
Deletes an appointment from an Organizer control.
SysNotificationRemoveID (Function)
Removes all previously sent interactive notifications that match the specified identifier (ID).
Error 404: The file for HFSQL browse cannot be an expression of this type
gpwForgottenPassword (Function)
Runs an action to retrieve or change the password of a user.
TimelineDeleteAll (Function)
Deletes all events and tracks from a TimeLine control.
Check: Test of a WLanguage code
The monitoring robot is used to compile and run the WLanguage code entered......
Using the Salesforce service
Salesforce is a very popular CRM software......
CONTINUE statement/"CONTINUE:" label
The CONTINUE keyword can correspond: to the CONTINUE instruction. It allows you to go back...
PageSubmit (Function)
Validates the specified page and starts the execution of a button.
HOut (Function)
Used to find out whether the record on which you want to be positioned is located outside the data...
HCancelDeclaration (Function)
Used to: Delete a declaration made previously using HDeclare, HDeclareExternal, HDescriveFile....
MapDeleteImage (Function)
Deletes an image drawn on the map displayed in a Map control.
Events associated with a Dashboard control
WINDEV and WINDEV Mobile manage the following events by default (order of appearance in the code...
Visibility of the elements found in an external component
When creating an external component, you have he ability to define the elements of the external...
Size (Property)
The Size property is used to determine and change the size of an element.
Drawing in WINDEV, WEBDEV and WINDEV Mobile
WINDEV, WEBDEV and WINDEV Mobile include several functions for displaying, drawing, copying...
ExecuteProcess (Function)
Starts the execution of a process programmatically, i.e. without the user having to perform...
SchedulerSelectPlus (Function)
Selects an appointment in a Scheduler control.