【正文】 應(yīng)用于普通窗口類、數(shù)據(jù)庫管理類、網(wǎng)絡(luò)數(shù)據(jù)通信類等應(yīng)用程序的開發(fā)。學(xué)習(xí)版使編程人員很容易地開發(fā)Windows和Windows NT的應(yīng)用程序；專業(yè)版為專業(yè)編程人員提供了功能完備的開發(fā)工具；企業(yè)版允許專業(yè)人員以小組的形式來創(chuàng)建強(qiáng)健的分布式應(yīng)用程序。專業(yè)人員可以用 Visual 實(shí)現(xiàn)其它任何 Windows 編程語言的功能，而初學(xué)者只要掌握幾個關(guān)鍵詞就可以建立實(shí)用的應(yīng)用程序。無論是開發(fā)功能強(qiáng)大、性能可靠的商務(wù)軟件，還是編寫能處理實(shí)際問題的實(shí)用小程序，Visual 、最簡便的方法。s logic circuits deposed into Micros for the implementation of the various ponents corresponding action. Visual Visual ,簡稱VB，是Microsoft公司推出的一種Windows應(yīng)用程序開發(fā)工具。 if selected by one of them. The remaining buttons will automatically remove nonselected. (2)Check box control (Checkbox) Checkbox control and OptionButton Controls somewhat similar, but the use of a very different, CheckBox controls that work independently of each other, and they separated without the slightest relationship of checks and balances. All elected or not one can be elected. Each one is an independent, in which one or more optional. (3) Frame Controls Control framework is a very simple controls, Its mission is the Paleozoic body drawing a great sense of the threedimensional framework, It is a mon attribute caption attribute to show that the framework of the title. Frame Controls rarely used alone and it is always with other controls with the use. For example, we can in the TextBox, picture frames and an external add a framework to increase the threedimensional effect, and so on. 3 Visual Programming LanguageIn human social life, language is pronunciation, vocabulary and grammar constitute the system, persontoperson transmission of information, exchange ideas tool. Programming Language (also called algorithm language) is a word, phrase, and the rules of grammar constitute the directive system and the puter is a tool for the exchange. Use programming language, we only need to tell the puter when and under what conditions they do, puter will be in accordance with a request to implement a directive, and the implementation tell us the results. From the machinery of the implementation perspective, the programming language can be divided into two major categories: low level language and highlevel language. Low level language is the machineoriented instructions, different models of the CPU (Central Processing Unit, acronym for the CPU) have different instruction system. Low level language is divided into machine language and assembler language. Machinelanguage instructions contain only by the 0 and 1 binary symbols formed by certain laws, machines can be directly executed. These directives memory quite difficult, for people on the use of specific Mnemonic representatives’ machinery orders resulting in assembly language. Assembler language procedures require only a simple translation machines can be implemented. Low level language is characterized by faster procedures, high efficiency, but the programmer is required to understand the machine structure, Programming difficult for nonspecialists to get involved. Senior language is easily accepted by the people。 But they can only choose one option Button. In Frame, Picture Box Form containers or use both options controls, Users can use group. (1) Radio buttons control (Option Button) in the application process, Sometimes users needs such a choice: Several options were the only choicespecies, and must make a choice. Several because it is mutually exclusive. Then, on the need to use Option Button buttons control。 Enterprise Edition allows professionals to form the group to create a strong distributed applications. 1 Visual features Visual is running on the Windows platform under a visualization of highlevel programming languages. Since inception in 1991. Visual to adapt to the Windows 95/98 and Windows NT etc. version of the operating system, widely used in ordinary window category, database management category, data munications network for such application development. Visual as a puter visualization of the senior programming language, the following notable features:(1) Visual inherited the Basic language is easy features in Microsoft Visual development process never forget his roots, programming, even for beginners is a principle of puterilliterate people, also in a relatively short period of time to prepare a viable Windows procedures. (2) Based on the Dos and the environment than the programming language, Visual thinking about a fundamental change based on the Dos and the environment than the programming language, Visual thinking about a fundamental change in the introduction of the Visual Objectoriented program design, the process design staff from the tedious details of the procedures designed to extricate themselves, programming staff during program development, choose the right people need to structure their own interface. Then arrangements for a reception object to what information do whatever they can. Without the need to consider specific targets of what to do, what to do, what to do after the issue. (3) Visual has powerful database management functions Visual support SQL database inquiries, Visual embedded database management functions can be manipulated almost all of the database format. (4) Development of highly integrated environment is a Visual including editing, debugging procedures, operating procedures, Compiling procedures such as functional integration program development environme