用Delphi开发触摸屏查询系统  

Developing Touching Screen Query System with Delphi

作　　者：鲁保玉[1] 赵建功[1] 

机构地区：[1]漯河职业技术学院计算机工程系,河南漯河462002

出　　处：《河南理工大学学报（自然科学版）》2005年第3期229-232,共4页Journal of Henan Polytechnic University（Natural Science）

摘　　要：触摸屏查询系统必须限制用户操作以免退出系统或关机,调用API函数屏蔽Win- dows桌面的任务栏是解决该问题的有效手段;图文信息采用HTML格式并在TWebBrowser 控件中显示;与数据库的连接采用ADO技术,查询条件的输入通过编制软键盘来实现;管理员需要退出系统或关机时,经安全认证后由程序自动控制.Touching Screen Query System must restrict users to exit the system or shut down the machine. Calling API functions to hide the task bar on the windows desktop is an available absolution for this problem. In the system discussed here, graphic and text information is shown on the TWebBrowser controller in HTML format. This system adopts ADO technology to connect database, and has a customized soft keyboard to receive the query terms. When administrators decide to quit the system or shut down the machine, the program will automatically control the process after testing and verifying the request.

关 键 词：触摸屏查询 TWebBrowser控件 API函数 ADO 软件盘 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]