【正文】 ign process do not see the actual display, run the program to be piled can be observed. If you are not satisfied with the effect of the interface, but also return to the program changes. Sometimes, this programming Compiler Change the operation may be repeated several times, greatly affected the efficiency of software development. Visual Basic provides a visual design tool, the plexity of the Windows interface design package together, developers do not have a lot of interface design and write press the screen layout design, using system tools to draw on the screen various parts, that is, graphical objects, and set the properties of these graphical objects. Visual Basic code automatically generated interface design, programmers need only write the part to achieve functionality of the program code, which can greatly improve the efficiency of program design. Objectoriented programming Visual Basic support for future objectoriented programming, but it is the general objectoriented programming language (C + +) are not identical. In general objectoriented programming language, object code and data from the position of an abstract concept。s strategic corporate object technology, which the multiple applications into one, as each application for an object linking and embedding, is an application integration technology. Using OLE technology, you can easily build posite documents (pound document), this document from a number of different application objects, each object in the document and linked to the original application, and perform with the original application the same operation. Dynamic link library (DLL) Visual Basic is an advanced programming language, do not have lowlevel language functions, the operation of the access to the machine hardware is not easy to implement. But it could be dynamic link library technology will C / C + + or assembly language programs to Visual Basic applications, you can call the same function as the internal call functions written in other languages. In addition, the dynamic link library, you can call the Windows application program interface (API) function has the function to achieve SDK. systems research and feasibility analysis Research Before the formal development of management information system is necessary for research, the need for mainly the following aspects. (1) to the user39。s requirements can be achieved through the existing puter technology to ensure the development of management information system functions and user submitted required match. (3) the existing business system may be a manual system, it could be used and the puter system, no matter the circumstances, the current system should be investigated in detail the specific circumstances of information processing, functional 共 13 頁 第 5 頁 structure within the system in order to design a reasonable, good new system logic model for the design of the new system to lay the foundation to ensure the quality of the entire system development. In short, the current system is necessary to conduct a detailed investigation, a clear user needs, to ensure the development of new system functions consistent with the user39。s requirements and system on the basis of research conducted on the development of new systems of social, technical, economic, management, analysis and development of new systems e feasible, not feasible,