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...
<mongoGridFS variable>.ListFile (Function)
Retrieves the list of MongoDB files found in the MongoDB file system (gridFS).
<mongoGridFS variable>.GetFileByID (Function)
Retrieves (on the local computer) a file identified by its identifier and found in a MongoDB file...
<mongoGridFS variable>.GetFileInfo (Function)
Used to get information about a MongoDB file (gridFS).
<mongoGridFS variable>.DeleteFile (Function)
Deletes a file identified by its name from a MongoDB file system.
<mongoGridFS variable>.SendFile (Function)
Copies a file from the local computer to a MongoDB file system (gridFS).
<mongoCollection variable>.ModifyOne (Function)
Modifies a document in a collection of MongoDB database.
<mongoCollection variable>.DeleteAll (Function)
Deletes all the documents (corresponding to the specified filter) from a collection of a MongoDB...
<websocketClient variable>.Disconnect (Function)
Disconnects a client from a WebSocket server.
<websocketClient variable>.Send (Function)
Sends a message from the WebSocket server to the client.
<websocketClient variable>.Execute (Function)
Executes a global procedure in the context of a client connected to the WebSocket server.
<emailNotesSession variable>.SendMessage (Function)
Sends an email using the Lotus Notes protocol.
<emailOutlookSession variable>.SendMessage (Function)
Sends an email using the Outlook protocol.
<emailSMTPSession variable>.SendMessage (Function)
Sends an email using SMTP
<Certificate variable>.ExtractExtensionValue (Function)
Returns the value of a certificate extension.
<zipArchive variable>.ExtractDirectory (Function)
Automatically extracts and decompresses files from a directory in the file tree of an archive...
<htmlNode variable>.FindElementByTag (Function)
Searches for elements that correspond to a tag in an HTML node.
<htmlDocument variable>.FindElementByTag (Function)
Searches for elements that correspond to a tag in an HTML document.
<htmlNode variable>.ChercheElémentParID (Function)
Searches for the element whose "ID" attribute matches a specific value in an HTML node.
<htmlNode variable>.FindElementByClass (Function)
Searches for elements whose "class" attribute matches a specific value in an HTML node.
<htmlDocument variable>.FindElementByClass (Function)
Searches for elements whose "class" attribute matches a specific value in an HTML document.
<htmlDocument variable>.ChercheElémentParID (Function)
Searches for the element whose "ID" attribute matches a specific value in an HTML document.
<htmlDocument variable>.FindElementByName (Function)
Searches for elements whose "name" attribute matches a specific value in an HTML document.
<htmlNode variable>.FindElementByName (Function)
Searches for elements whose "name" attribute matches a specific value in an HTML node.
<htmlDocument variable>.BuildString (Function)
Generates a UTF-8 string containing an HTML document.
<htmlDocument variable>.Save (Function)
Saves the content of an htmlDocument variable to an HTML file.