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Vb, whose full name is Visual Basic, belongs to high-level programming language. Vb is a general object-based programming language, a visual programming language that is structured, modular, object-oriented and contains event-driven mechanisms that assist the development environment.

VB is Visual Basic, which itself is a programming language. It belongs to a high-level language.

Visual Basic (VB for short) is a general object-based programming language developed by Microsoft. It is a structured, modular, object-oriented visual programming language with event-driven mechanisms that assist the development environment. Is a language that can be used for Microsoft's own product development.

"Visual" refers to the method of developing a graphical user interface (GUI)-- you don't need to write a lot of code to describe the appearance and location of the interface elements, but simply add the pre-established objects to a point on the screen. "Basic" refers to BASIC (Beginners All-Purpose Symbolic Instruction Code) language, which is the most widely used language in the history of computing technology.

Visual Basic is derived from the BASIC programming language. VB has a graphical user interface (GUI) and rapid application development (RAD) system, you can easily use DAO, RDO, ADO to connect to databases, or easily create Active X controls for efficient generation of type-safe and object-oriented applications [2]. Programmers can easily use the components provided by VB to quickly build an application.

Language features

The production of application installation disk provides users with a friendly integrated development environment, which is embodied in:

Visual design platform: when programming with traditional programming language, it is generally necessary to write programs to design the interface of the application (such as the appearance and location of the interface, etc.), and the actual effect of the interface can not be seen in the design process. In Visual Basic 6.0, the object-oriented programming method (Object-Oriented Programming) is adopted to encapsulate the program and data as an object, and each object is visible. When designing the interface, developers can directly use the toolbox of Visual Basic 6.0to "draw" different types of objects on the screen, such as windows, menus, command keys and so on, and set properties for each object. Developers only need to write code for the objects that want to complete the event process, so the efficiency of programming can be greatly improved.

Event-driven programming mechanism: a process-oriented program consists of a main program and several subroutines and functions. The program always starts from the main program, and the subroutine and function are called by the main program. The developer must determine the execution order of the whole program in advance when programming. The event-driven programming of Visual Basic 6.0is to encode the related events of an object triggered by the user, and each event can drive a section of the program to run. Developers only need to write code that responds to user actions. The code of such an application is concise and easy to write and maintain.

Structured programming language: Visual Basic 6.0has rich data types and numerous internal functions. It adopts modular and structured programming language with clear structure, simple grammar and easy to learn.

Powerful database function: Visual Basic 6.0uses data controls to access Access, FoxPro and other database systems, as well as Excel, Lotus and other spreadsheets.

ActiveX technology: ActiveX develops the original OLE technology, which enables developers to get rid of the shackles of specific languages and easily use the functions provided by other applications. Visual Basic 6.0can develop applications that integrate sound, image, animation, word processing, spreadsheet, Web and other objects.

Network function: the DHTML (dynamic HTML) design tool provided by Visual Basic 6.0enables developers to create and edit Web pages dynamically, so that users can develop multi-functional network application software.

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