在PowerBuilder中生成可重用的数据窗口

The Creating of Reusable DataWindow in PowerBuilder

ＰｏｗｅｒＢｕｉｌｄｅｒ能发展到今天的水平，关键因素之一就是它拥有数据窗口（ＤａｔａＷｉｎｄｏｗ）技术．数据窗口以其自动的用户／数据库接口为程序开发者省时省力．虽然ＰｏｗｅｒＢｕｉｌｄｅｒ是一个面向对象的可视化的数据库前端开发平台，但对数据窗口对象它是不具有继承性的，为了程序开发的方便性和展示数据的统一性，数据窗口的重用在程序设计中是相当重要的．本文具体介绍了通过自定义用户对象的方式扩展数据窗口控件，来实现让数据窗口具有继承的功能．

One of the most important factors that lead to the development of PowerBuilder is its function of DataWindow. DataWindow can save the time and energy of programmer because of its automatic user/database interface. Though PowerBuilder is an OOP(object-oriented programming) & visible database application development environment, it has no inheritance to object of DataWindow. For the convenience of programming and uniformity of data, the reuse of DataWindow is quite important to the programmer.