vb 简单运算代码

来源：百度知道编辑：UC知道时间：2024/05/31 08:47:38

看完这段代码我想知道 dim后边的变量都是什么

Option Explicit

Dim bolFlagPoint As Boolean, bolFlagSign As Boolean
Dim strCalc As String, strSign As String
Dim objEval As New ScriptControl

Private Sub cmdCheng_Click()
strSign = "*"
If strCalc = "" Then
strCalc = txtView.Text & strSign
Else
strCalc = strCalc & txtView.Text & strSign
End If

bolFlagSign = True
bolFlagPoint = False
End Sub

Private Sub cmdChu_Click()
strSign = "/"
If strCalc = "" Then
strCalc = txtView.Text & strSign
Else
strCalc = strCalc & txtView.Text & strSign
End If

bolFlagSign = True
bolFlagPoint = False
End Sub

Private Sub cmdDeng_Click()
strCalc = strCalc & txtView.Text
txtView.Text = objEval.Eval(strCalc)
End Sub

Dim bolFlagPoint As Boolean, bolFlagSign As Boolean
Dim strCalc As String, strSign As String
Dim objEval As New ScriptControl
一般情况下变量命名都会有约定俗成的命名规则：类型简写+变量名
如：bolFlagPoint，说明了它是布尔型变量
strCalc，说明它是字符型变量
objEval，说明它是一个对象变量，obj是object的简写，ScriptControl是要定义的对象类型
又如：dim frmSearch as Froms 说明它是一个窗体

dim 后面的变量为bolFlagPoint , bolFlagSign ,strCalc ,strSign ,objEval

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