利用PowerBuilder数据窗口建立动态菜单

PowerBuilder的菜单功能很强,用它可以开发按钮式菜单、图标按钮菜单或下拉与图标结合式的菜单,这些菜单虽然可以满足一般应用系统的功能需求,界面也比较美观、友好,但也存在不足之处。对于单纯用RadioButton、CommandButton、PictureButton等实现的按钮式菜单,若想利用它们实现二级级联式或弹出式菜单。则需在这些按钮被Clicked时,触发下一级菜单,菜单的选项相对说来比较固定,不易动态增加、删除和调整菜单项;而对于下拉级联式菜单,虽然能够实现动态增加、删除和调整菜单项,但却存在着菜单项的字体、颜色等表现形式不够丰富的缺陷。     

PowerBuilder数据窗口中列图片的指定与显示

该文主要介绍一种在PowerBuilder的数据窗口中实现列图片的指定与显示的通用方法．     

PowerBuilder数据窗口中列图片的指定与显示

该文主要介绍一种在PowerBuilder的数据窗口中实现列图片的指定与显示的通用方法。     

PowerBuilder数据窗口中记录的多行选定与删除

本文主要介绍一种实现PowerBuilder数据窗口中记录的多行选定与删除功能的行之有效的方法。     

利用数据窗口开发交叉式统计报表的一种方法

针对管理信息系统中经常遇到的交叉式统计报表难于实现的问题,提出了一种利用数据窗口存放中间数据,进而完成交叉式报表生成的方法,并以“高校科研信息管理系统”中的奖励报表为例,给出了具体实现过程。     

PB中下拉数据窗口的快速检索定位

介绍了一种PB中下拉数据窗口的快速检索定位的通用方法。     

彩色汉字窗口菜单的设计与实现

本文详细叙述了用 Turbo C 实现彩色汉字窗口菜单存在的问题及解决的方法,给出了几个主要的可以处理汉字信息的窗口操作实用函数。     

在VB中实现加长和加宽ComboBox的下拉菜单

通过实例介绍了加长和加宽ComboBox(组合框)的下拉选单的具体过程.     

Structure Processing of Web-Based Menus

Grounded in cognitive load theory, levels of processing theory, modes of learning research, and the facets of working memory (WM) framework, the primary goal of this investigation was to seek empirical evidence for a structure processing mechanism in WM that facilitates the coordination of associations made into coherent structures and the role this mechanism might play in performance and retention. This goal was motivated by a gap in the understanding of mental model production and encoding processes in WM. To carry out this goal, two usability studies were conducted to investigate retention, error, and time performance of Web-based menus created with structured or unstructured design. Relationships between these measures and coordination ability in WM, as well as storage and supervision ability, were also assessed. In Study 1, which tested simple Web-based menus, correlations of .28, ?.56, and ?.54 were detected between coordination (CC) and retention scores, CC and errors, and CC and time; in Study 2, which tested commercial Web-based menus, correlations of .46, ?.45, and ?.25 were detected. For Studies 1 and 2, differences in favor of structured design for retention, error, and time performance were highly significant (p < .001).     

动态菜单和窗口的自动创建与管理

为了提高通用分布式显控软件的通用性和灵活性，显控软件基于控制文件进行设计，本文介绍了根据控制文件自动生成并管理动态菜单的技术，介绍了利用动态数组窗口进行管理，对窗口关闭时的线程进行同步的技术。     

单片机系统液晶菜单设计

以MGLS-19264液晶显示器为例。介绍了在LCD液晶上实现多级菜单和多层屏幕的建立。提出了一种利用数据结构。设计LCD液晶菜单通用方法。该方法通用性较强。     

Web系统基于菜单资源的用户及安全管理

首先对系统用户类型进行划分,然后论述系统基于角色访问控制的基本原理,建立相应的模型结构,并在此基础上,建立了基于菜单资源的功能权限分配模型,并描述其实现机制。     

Predicting the Skilled Use of Hierarchical Menus With the Keystroke-Level Model

This article addresses a key question in the application of Card, Moran, and Newell's (1983) keystroke-level model to software in which users specify a command by working through a system of hierarchical menus. For example, to insert a row in Lotus 1-2-3®, the user makes three menu choices: W for worksheet, I for insert, and R for row. In the keystroke-level model, it is assumed that a time-consuming mental operation precedes each command. The question in the application of the keystroke-level model to hierarchical menu systems is whether the keystrokes WIR in the previous example constitute the execution of three commands and thus require three mental operations or whether WIR acts as a single command and requires only one mental operation. Data were collected from four highly experienced Lotus 1-2-3 users as they went about their day-to-day work. Strong evidence that only one mental operation is involved in choosing from a hierarchical menu system was obtained. We hypothesize that the discrepancy of our results from the data of others is due to the fact that our subjects were more experienced. The implications of our findings for the design of menus is discussed.     

基于微控制器的便携式压力检测仪

介绍了一种用C51实现的便携式菜单驱动压力检测仪的硬件构成及软件设计方法。硬件采用I^2C总线设计技术，软件用C51指针和结构体数据实现液晶显示器的菜单显示和数据管理。检测数据保存后可通过微型打印机输出。检测仪体积小，功耗低，可靠性高，人机界面好，且可进一步功能更新。     

浅谈现场总线开放系统的系统集成与应用集成

本文讨论现场总线国际标准多元化趋势下基于现场总线开放系统的集成技术。通信协议、标准功能块、OPC、OFC在系统集成、应用集成中的作用。     

T&E与VV&A过程的联系及集成

校核、验证和确认 (VV&A)与测试和评估 (T&E)的目的之一都是为了减少风险 ,增加可信度。它们之间存在着许多相似之处。如何在建模与仿真中将两者结合起来以降低费用是一个值得研究的方面。该文首先分别介绍VV&A与T&E在各自领域的应用 ;然后详细分析了它们之间的主要相同与不同之处 ;最后探讨了如何将两者集成起来     

IT整合:零售企业并购整合的核心

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