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...
<hdfsConnection variable>.CopyFrom (Function)
Copies a file found on a Hadoop server to the local computer.
<hdfsConnection variable>.CopyTo (Function)
Copies a file located on the local machine to a Hadoop server.
<hdfsConnection variable>.CreateDirectory (Function)
Creates a directory on a Hadoop server.
<hdfsConnection variable>.CloseConnection (Function)
Closes a connection to a Hadoop server.
<hdfsConnection variable>.Delete (Function)
Deletes a file or directory from a Hadoop server.
<hdfsConnection variable>.List (Function)
Lists the content of a directory found on a Hadoop server.
<hdfsConnection variable>.OpenConnection (Function)
Opens a connection to a Hadoop server.
<hdfsConnection variable>.Rename (Function)
Renames a file or a directory found on a Hadoop server.
<wsRequest variable>.AddSAMLAssertion (Function)
Adds a SAML assertion to a Webservice request.
<xsdEntity variable>.AddAttribute (Function)
Adds an attribute to an automatic variable generated by the import of a Webservice.
<wsRequest variable>.addXMLSignature (Function)
Adds an XML signature to a Webservice request.
<xmlNode variable>.FindNamespaceByName (Function)
Finds an XML namespace according to its XML node and in the parents of the node.
<xmlNode variable>.FindNamespaceByURI (Function)
Finds an XML namespace from its URI (Universal Resource Identifier) in a node and in the parents...
<xmlDocument variable>.BuildString (Function)
Retrieves and formats the content of an XML document.
<xmlDocument variable>.ValidDocument (Function)
Validates an XML document from an XSD schema.
<xmlDocument variable>.ExecuteXPath (Function)
Executes an XPATH query in an xmlDocument variable.
<xmlNode variable>.ValidNode (Function)
Validates an XML node, its children and its attributes from its description in the XSD schema...
<xmlDocument variable>.Save (Function)
Saves an XML document in a file.
<zipArchive variable>.AddFile (Function)
Adds a file (of any type) into an archive in CAB, ZIP, WDZ and 7z, TAR or TGZ (TAR.GZ) format...
<zipArchive variable>.AddDirectory (Function)
Adds all the files found in a directory and in its subdirectories into an archive and compresses them.
<zipArchive variable>.CreateExe (Function)
Creates a self-extracting archive as a 32-bit executable (.EXE).
<zipArchive variable>.IsMulti (Function)
Returns the type of archive: single-part archive or multi-part archive.
<zipArchive variable>.ExtractPath (Function)
Returns the path of a file found in the archive.
<zipArchive variable>.ExtractFile (Function)
Extracts a file from an archive and automatically decompresses it to a physical location...
<zipArchive variable>.ExtractFileList (Function)
Extracts and decompresses a list of files found in an archive to a physical location.