子窗口设计及编程
4.4.3子 窗口 设计 及 编程 子 窗口 是整个系统的执行部分,它是实现系统完整功能的基础,它的好坏将直接影响系统的运行速度及能否达到机械CAD系统预定的功能目标。 系统共有29个字 窗口 ,分别完成桥架、小车架、运行机构、起升机的 设计 及参数化建模。现
4.4.3子窗口设计及编程 子窗口是整个系统的执行部分,它是实现系统完整功能的基础,它的好坏将直接影响系统的运行速度及能否达到机械CAD系统预定的功能目标。 系统共有29个字窗口,分别完成桥架、小车架、运行机构、起升机的设计及参数化建模。现在以主梁、端梁为例说明子窗口的设计。 4.4.3.1 主梁结构子窗口设计 主梁结构是机械里比较重要的结构件,系统需要5个字窗口和一个主梁结构参数表(Access表)完成主梁结构设计模块。 1从已有设计记录中选取记录 2 主梁截面设计 3 主梁端部设计 4 隔板布置 5 生成用于有限元分析的板单元模型 6 强度、刚度 不满足回到主梁界面设计,满足-〉主梁尺寸存入数据库 7 生成三维实体模型 1) 主梁窗口1 主要功能是:1:选取以前的设计记录进行修改,或选择一个相近的记录,开始一个新的设计;2:选择一条已有的记录生成三维模型。 界面设计 界面由Frame框、Datalist控件、按钮、进度条、Label控件、Picture控件、状态栏组成。 窗体代码 代码主要分两部分:一是主梁结构参数表操作部分,包括表记录排序、记录删除等。 二是模型操作部分,按照数据表中读出的主梁参数生成三维模型。 定义变量、界面初始化 Option Explicit Dim Part As Object ... Private Sub Form_Load() '窗体加载事件,界面初始化 zl1.Top=(Screen.Height * 8/10-zl1.Height)/2 .... Set rss=New ADODB.Recordset rss.CursorLocation=adUseClient rss.Open "select * from 主梁", conn,adOpenStatic,adLockOptimistic '打开主梁结构数据表 .... Set DataGrid1.DataSource=rss DataGrid1.DataChanged=False End sub 按跨度排序、按ID排序 删除记录 等按钮实现对数据库的操作 主要通过SQL方式实现库的操作,以按跨度排序为例 '按跨度排序 Private Sub Command2_Click() msql="select * from 主梁 order by [form3text1] asc" If rss.State adStateClosed Then rss.Close End if rss.Open msql,conn,adOpenStatic,adLockOptimistic Set DataGrid1.DataSource=rss end sub

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