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2024年3月27日发(作者:sql update字符串拼接)

VB计算器代码

求VB计算器代码

悬赏分:15 - 解决时间:2007-2-13 13:47

请高手们 明确 我要的是一个

当我们在文本框1内输入1+1 则在文本框2就会出现2 依次类推 2+2 4

还有我还想需要连续的如:1+1+1+1 则2要出现4 不单单是2数之合

现在我只要求有加法,我需要有乘法与除法

请高们们,写代码来‘‘‘

提问者: 陳傑 - 试用期 一级

最佳答案

Option Explicit

Private StoredValue As Double

Private Const opNone = 0 Private Const opAdd = 1 Private Const

opSubtract = 2 Private Const opMultiply = 3 Private Const opDivide = 4

Private Operator As Integer

Private NewEntry As Boolean

' Remove the last character. Private Sub DeleteCharacter() Dim txt

As String

Dim min_len As Integer

txt =

If Left$(txt, 1) = "-" Then min_len = 2

Else

min_len = 1

End If

If Len(txt) > min_len Then = Left$(txt, Len(txt) - 1)

Else

= "0"

End If

End Sub

' Clear the current entry, saved value, and operator.

Private Sub cmdClear_Click() cmdClearEntry_Click

StoredValue = 0

Operator = opNone

End Sub

' Clear the current entry.

Private Sub cmdClearEntry_Click() = ""

End Sub

' Add a decimal point to the display. Private Sub cmdDecimal_Click()

If InStr(, ".") Then Beep

Else

If NewEntry Then

= "."

NewEntry = False

Else

= & "." End If

End If

End Sub


本文标签: 需要 文本框 出现 加法