Error 103: The type is unknown Definition (Type of variable) The Definition type is used to find out the characteristics of a type: simple type, advanced type, class, structure.... 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...... Multiple assignments of arrays, structures and classes The multiple assignment of arrays consists in assigning a set of simple values (boolean, integer, string, real, numeric or currency) to the cells of an array. This multiple assignment is also available for the structures and the classes.... Data Binding: Creating controls from the "Project explorer" pane Data binding is a process that binds variables in memory to controls in a window or page...... OOP concepts A class contains the description of a data structure (members) and the processes (methods) that handle this structure.... ComboClose (Function) Closes the drop-down list in a Combo Box control (simple or multi-column Combo Box control). MVP: Simple single-file example: Table + Linked file Let's see a simple and illustrated example about the use of MVP to create a Table window with its linked form...... Generating a class diagram The generation is used to create the WINDEV classes ("...... Variant (Type of variable) The Variant type is used to: store any simple value: boolean, numeric (Currency, Real, Integer, etc.), characters and character string, date (Date, Time, DateTime and Duration), ... store named or indexed subelements. store any complex value: structures, classes, advanced types, arrays, associative arrays, queues, stacks and lists. handle the NULL value in WLanguage. store interactions with ActiveX objects and Automation programming.... Class inheritance The hierarchical organization in class and sub-class has allowed to create the notion of inheritance...... 1. Managing emails WINDEV includes multiple methods to manage emails... <Combo box>.Close (Function) Forces the closing of the drop-down list in a Combo Box control (simple or multi-column Combo Box). Simple statements Month (Property) The Month property is used to: Retrieve the month from a Date or DateTime variable. Modify the month in a Date or DateTime variable. Retrieve the month from a Date item (in "Simple date" or "Date and Time" format) Modify the month in a Date item (in "Simple Date" or "Date and Time" format)... TabMDI (Property) The TabMDI property is used to: Get the type of a Tab control (simple tab or dynamic tab - MDI). Change the type of a Tab control (simple tab or dynamic tab - MDI). This property is obsolete from version 200057. Use DynamicTab.... 2. Types of accessible files Types of accessible files... 3. Types of accessible files Overview Overview of the different operators... Error 202: The method already has an access attribute (public, protected or private) Customizing the WEBDEV User Groupware The groupware in automatic mode offers several possibilities...... TmeLine control linked to a data file or variable You can create TimeLine controls directly linked to the data.... Generation of a class diagram using reverse engineering WINDEV, WINDEV Mobile and WEBDEV allow you to create the class diagram of an application using reverse engineering (files "...... HTMLClassDelete (Function) Deletes a class from the HTML classes of a control. HTMLClassAdd (Function) Adds a class into the HTML classes of a control.