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Visual Basic

Visual Basic (VB) is an event driven programming language and associated development environment from Microsoft. VB has been replaced by Visual Basic .NET. The older version of VB was derived heavily from BASIC and enables rapid application development (RAD) of graphical user interface (GUI) applications, access to databases using DAO, RDO, or ADO, and creation of ActiveX controls and objects.

A programmer can put together an application using the components provided with Visual Basic itself. Programs written in Visual Basic can also use the Windows API, but doing so requires external function declarations.

In business programming, Visual Basic has one of the largest user bases. According to some sources,[citation needed] as of 2003, 52% of software developers used Visual Basic, making it the most popular programming language at that time. Another point of view was provided by the research done by Evans Data that found that 43% of Visual Basic developers planned to move to other languages.[1] Visual Basic currently competes with PHP and C++ as the third most popular programming language behind Java and C.

詳盡:http://en.wikipedia.org/wiki/Visual_basic