需要完整版的近似科学型计算器的vb代码，拜托拜托。
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打开VB编辑器界面，建立UserForm1添加好如图的控件改动好对应的Caption
加号按钮的程序代码
清除按钮的程序代码
退出按钮的程序代码
VERSION 5.00
Begin VB.Form Form1
BorderStyle = 1 'Fixed Single
Caption = "简易计算器 V1.0"
ClientHeight = 5025
ClientLeft = 45
ClientTop = 375
ClientWidth = 4440
LinkTopic = "Form1"
MaxButton = 0 'False
MinButton = 0 'False
ScaleHeight = 5025
ScaleWidth = 4440
StartUpPosition = 3 '窗口缺省
Begin VB.Frame Frame1
Height = 4935
Left = 120
TabIndex = 0
Top = 0
Width = 4215
Begin VB.CommandButton cmdQuit
Caption = "Quit"
Height = 495
Left = 2160
TabIndex = 21
Top = 4080
Width = 615
End
Begin VB.CommandButton cmdNumber
Caption = "4"
Height = 495
Index = 4
Left = 480
TabIndex = 20
Top = 1920
Width = 615
End
Begin VB.CommandButton cmdNumber
Caption = "5"
Height = 495
Index = 5
Left = 1320
TabIndex = 19
Top = 1920
Width = 615
End
Begin VB.CommandButton cmdNumber
Caption = "6"
Height = 495
Index = 6
Left = 2160
TabIndex = 18
Top = 1920
Width = 615
End
Begin VB.CommandButton cmdNumber
Caption = "7"
Height = 495
Index = 7
Left = 480
TabIndex = 17
Top = 2640
Width = 615
End
Begin VB.CommandButton cmdNumber
Caption = "8"
Height = 495
Index = 8
Left = 1320
TabIndex = 16
Top = 2640
Width = 615
End
Begin VB.CommandButton cmdNumber
Caption = "9"
Height = 495
Index = 9
Left = 2160
TabIndex = 15
Top = 2640
Width = 615
End
Begin VB.CommandButton cmdNumber
Caption = "0"
Height = 495
Index = 0
Left = 480
TabIndex = 14
Top = 3360
Width = 615
End
Begin VB.CommandButton cmdDecimal
Caption = "."
Height = 495
Left = 1320
TabIndex = 13
Top = 3360
Width = 615
End
Begin VB.CommandButton cmdOperator
Caption = "-"
Height = 495
Index = 2
Left = 3000
TabIndex = 12
Top = 1920
Width = 615
End
Begin VB.CommandButton cmdOperator
Caption = "*"
Height = 495
Index = 3
Left = 3000
TabIndex = 11
Top = 2640
Width = 615
End
Begin VB.CommandButton cmdOperator
Caption = "/"
Height = 495
Index = 4
Left = 3000
TabIndex = 10
Top = 3360
Width = 615
End
Begin VB.CommandButton cmdClear
Caption = "→"
Height = 495
Left = 480
TabIndex = 9
Top = 4080
Width = 615
End
Begin VB.CommandButton cmdClearEntry
Caption = "AC"
Height = 495
Left = 1320
TabIndex = 8
Top = 4080
Width = 615
End
Begin VB.CommandButton cmdEquals
Caption = "="
Height = 495
Left = 3000
TabIndex = 7
Top = 4080
Width = 615
End
Begin VB.CommandButton cmdPlusMinus
Caption = "-"
Height = 495
Left = 2160
TabIndex = 6
Top = 3360
Width = 615
End
Begin VB.CommandButton cmdNumber
Caption = "1"
Height = 495
Index = 1
Left = 480
TabIndex = 5
Top = 1200
Width = 615
End
Begin VB.CommandButton cmdNumber
Caption = "2"
Height = 495
Index = 2
Left = 1320
TabIndex = 4
Top = 1200
Width = 615
End
Begin VB.CommandButton cmdNumber
Caption = "3"
Height = 495
Index = 3
Left = 2160
TabIndex = 3
Top = 1200
Width = 615
End
Begin VB.CommandButton cmdOperator
Caption = "+"
Height = 495
Index = 1
Left = 3000
TabIndex = 2
Top = 1200
Width = 615
End
Begin VB.TextBox txtDisplay
Alignment = 1 'Right Justify
BackColor = &H00404040&
BeginProperty Font
Name = "新宋体"
Size = 15
Charset = 0
Weight = 700
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
ForeColor = &H0080FFFF&
Height = 495
Left = 360
TabIndex = 1
Top = 480
Width = 3375
End
End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
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
'删除最后的字符
Private Sub DeleteCharacter()
Dim txt As String
Dim min_len As Integer
txt = txtDisplay.Text
If Left$(txt, 1) = "-" Then
min_len = 2
Else
min_len = 1
End If
If Len(txt) > min_len Then
txtDisplay.Text = Left$(txt, Len(txt) - 1)
Else
txtDisplay.Text = "0"
End If
End Sub
'清除最后一位
Private Sub cmdClear_Click()
If Len(txtDisplay.Text) > 0 Then txtDisplay.Text = Left(txtDisplay.Text, Len(txtDisplay.Text) - 1)
txtDisplay.SetFocus
End Sub
'清除显示内容，保存运算符
Private Sub cmdClearEntry_Click()
txtDisplay.Text = ""
StoredValue = 0
Operator = opNone
txtDisplay.SetFocus
End Sub
' 显示小数点
Private Sub cmdDecimal_Click()
If InStr(txtDisplay.Text, ".") Then
Beep
Else
If NewEntry Then
txtDisplay.Text = "."
NewEntry = False
Else
txtDisplay.Text = txtDisplay.Text & "."
End If
End If
txtDisplay.SetFocus
End Sub
'计算上一操作符的运算结果
Private Sub cmdEquals_Click()
Dim new_value As Double
If txtDisplay.Text = "" Then
new_value = 0
Else
new_value = CDbl(txtDisplay.Text)
End If
Select Case Operator
Case opNone
StoredValue = new_value
Case opAdd
StoredValue = StoredValue + new_value
Case opSubtract
StoredValue = StoredValue - new_value
Case opMultiply
StoredValue = StoredValue * new_value
Case opDivide
StoredValue = StoredValue / new_value
End Select
Operator = opNone
NewEntry = True
txtDisplay.Text = Format$(StoredValue)
txtDisplay.SetFocus
End Sub
' 显示数字
Private Sub cmdNumber_Click(Index As Integer)
If NewEntry Then
txtDisplay.Text = Format$(Index)
NewEntry = False
Else
txtDisplay.Text = txtDisplay.Text & Format$(Index)
End If
txtDisplay.SetFocus
End Sub
Private Sub cmdOperator_Click(Index As Integer)
cmdEquals_Click
Operator = Index
NewEntry = True
txtDisplay.SetFocus
End Sub
'改变符号
Private Sub cmdPlusMinus_Click()
If NewEntry Then
txtDisplay.Text = "-"
ElseIf Left$(txtDisplay.Text, 1) = "-" Then
txtDisplay.Text = Right$(txtDisplay.Text, 2)
Else
txtDisplay.Text = "-" & txtDisplay.Text
End If
txtDisplay.SetFocus
End Sub
'处理键盘按键
Private Sub Form_KeyPress(KeyAscii As Integer)
txtDisplay_KeyPress KeyAscii
End Sub
Private Sub Form_KeyUp(KeyCode As Integer, Shift As Integer)
txtDisplay_KeyUp KeyCode, Shift
End Sub
Private Sub txtDisplay_Change()
txtDisplay.SelStart = Len(txtDisplay.Text)
End Sub
Private Sub txtDisplay_GotFocus()
txtDisplay_Change
End Sub
Private Sub txtDisplay_KeyPress(KeyAscii As Integer)
Dim ch As String
ch = Chr$(KeyAscii)
Select Case ch
Case "0"
cmdNumber_Click 0
Case "1"
cmdNumber_Click 1
Case "2"
cmdNumber_Click 2
Case "3"
cmdNumber_Click 3
Case "4"
cmdNumber_Click 4
Case "5"
cmdNumber_Click 5
Case "6"
cmdNumber_Click 6
Case "7"
cmdNumber_Click 7
Case "8"
cmdNumber_Click 8
Case "9"
cmdNumber_Click 9
Case "*", "x", "X"
cmdOperator_Click opMultiply
Case "+"
cmdOperator_Click opAdd
Case vbCrLf, vbCr, "="
cmdEquals_Click
Case "-"
cmdOperator_Click opSubtract
Case "."
cmdDecimal_Click
Case "/"
cmdOperator_Click opDivide
Case "C", "c"
cmdClearEntry_Click
End Select
KeyAscii = 0
End Sub
Private Sub txtDisplay_KeyUp(KeyCode As Integer, Shift As Integer)
Select Case KeyCode
Case vbKeyNumpad0
cmdNumber_Click 0
Case vbKeyNumpad1
cmdNumber_Click 1
Case vbKeyNumpad2
cmdNumber_Click 2
Case vbKeyNumpad3
cmdNumber_Click 3
Case vbKeyNumpad4
cmdNumber_Click 4
Case vbKeyNumpad5
cmdNumber_Click 5
Case vbKeyNumpad6
cmdNumber_Click 6
Case vbKeyNumpad7
cmdNumber_Click 7
Case vbKeyNumpad8
cmdNumber_Click 8
Case vbKeyNumpad9
cmdNumber_Click 9
Case vbKeyMultiply
cmdOperator_Click opMultiply
Case vbKeyAdd
cmdOperator_Click opAdd
Case vbKeySeparator
cmdEquals_Click
Case vbKeySubtract
cmdOperator_Click opSubtract
Case vbKeyDecimal
cmdDecimal_Click
Case vbKeyDivide
cmdOperator_Click opDivide
Case vbKeyBack, vbKeyDelete
DeleteCharacter
End Select
KeyCode = 0
End Sub
祝好运 实在不行就修改自己同学的吧
等我午睡起来给你写哈！~~~~
嗯..帮不了..刚看到..
马上要上班了.对不住了..
网上有源码..自己百度一下.
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