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.
<sfConnection variable>.ExecuteProcess (Function)
Requests the execution of a specific process.
<sfConnection variable>.Merge (Function)
Merges the Salesforce records (also called Salesforce objects).
<sfConnection variable>.Read (Function)
Retrieves the Salesforce records from their identifiers.
<sfConnection variable>.EmptyRecycleBin (Function)
Clears the specified records from the Salesforce recycle bin.
<sfConnection variable>.ExecuteQuery (Function)
Runs an SOQL query (Salesforce Object Query Language) on a Salesforce database.
<Image variable>.Copy (Function)
Copies an image to another image.
<Image variable>.DominantImageColor (Function)
Returns the dominant color (i.e. most frequent color) of an image found in an Image variable.
<Queue variable>.Dequeue (Function)
Dequeues an element from a queue.
<Stack variable>.Pop (Function)
Pops an element from a stack.
<Image variable>.Crop (Function)
Returns the cropped part of an image. This image is found in an Image variable.
<Image variable>.AlphaBlend (Function)
Blends two images together. This allows you to create fade-in effects between 2 images.
<Image variable>.DrawHalo (Function)
Adds a halo effect on an image found in an Image variable].
<Image variable>.EncrustColor (Function)
Encrusts a color in an image found in an Image variable].
<Image variable>.ModifyLightness (Function)
Modifies the lightness of an image in an Image variable.
<Queue variable>.Info (Function)
Retrieves the characteristics of a queue: types of elements and number of elements.
<Stack variable>.Info (Function)
Retrieves the characteristics of a stack: types of elements and number of elements.
<hdfsConnection variable>.Delete (Function)
Deletes a file or directory from a Hadoop server.
<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>.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.