A Rice Growth Models (RGM) System by Object-Oriented Programming with Visual C ++

Object-oriented programming divides the crop production into subsystems and simulates their behaviors. Many classes were designed to simulate the behaviors of different parts or different physiological processes in crop production system. At the same time, many classes have to be employed for bettering user‘s interface. But how to manage these classes on a higher level to cooperate them into a perfect system is another problem to study. The Rice Growth Models (RGM) system represents an effort to define and implement a framework to manage these classes. In RGM system, the classes were organized into the model-document-view architecture to separate the domain models, data management and user interface. A single document with multiple views interface frame window was adopted in RGM. In the architectures, the simulation models only exchange data with documents while documents act as intermediacies between simulation models and interfaces.Views get data from documents and show the results to users. The classes for the different functions can be grouped into different architectures. Different architectures communicate with each other through documents.The classes for the different functions can be grouped into different architectures. By using the architecture,communication between classes is more efficient. Modeler can add classes in architectures or other architectures to extend the system without having to change system structure, which is useful for construction and maintenance of agricultural system models.     

Visual C++ 6.0 在牛产奶性能计算中的应用

本文介绍了牛的产奶性能计算软件程序界面的设计,根据牛的产奶性能测定数据计算过程的特点,讨论了在开发牛的产奶性能计算软件中,用Visual C 6．0解决牛的产奶性能计算过程中的问题。     

Visual C++在人事管理系统设计中的应用

VisualC++提供了相当齐备的类库、友好的编程界面和多种多样的数据库访问技术,其中ODBC所提供的应用程序接口(API),使得编写数据库应用程序变得简单容易。本文以人事管理系统的开发过程为例,简述了ODBC数据库编程的步骤、设计思路和要点,并给出了关键程序代码。