VB编写简易计算器(附图)
VB简单计算器(截图附代码)
VB程序简单计算器最近学完VB，感觉很好，写了个计算器程序，虽然花了不少时间，可也着实高兴。
其中遇到很多问题，最终也在各种资料中得到解决。
现在附上截图和全部代码，希望和大家交流一下，相互学习。
也希望能帮助到准备做计算器的同学。
计算器最终执行文件图标：计算器包括三个窗体（form）：主页面form1：其中的“欢迎各位到此一游”是闪烁效果，呵呵，是自己想着无聊，就想出这么个玩意。
与计算器计算功能无关。
具体实现看下来代码。
Form1的实现代码：Public haha As BooleanPrivate Sub Command1_Click()Dim a As Integera = MsgBox("亲爱的你，真的想要退出本系统吗？", _vbYesNo + vbInformation + vbDefaultButton1, "退出系统前的询问撒(⊙o⊙)")If a = 6 Then '表示当选择“是”的时候的返回值EndEnd IfEnd SubPrivate Sub Command2_Click()Me.HideForm2.ShowEnd SubPrivate Sub Command3_Click()Me.HideForm3.ShowEnd SubPrivate Sub Form_Load()haha = FalseEnd SubPrivate Sub Timer1_Timer()haha = Not hahaIf haha ThenLabel2.ForeColor = &HFF00FFElseLabel2.ForeColor = vbWhiteEnd IfEnd Sub有些像图像等一些可见的控件属性就没在代码里写了，直接在属性里设置了。
页面（form2）：此页面将鼠标点上去，还有意想不到的效果喲。
全部代码为：Dim isFocus1, isFocus2 As BooleanPrivate Sub Command1_Click()If isFocus1 Then '判断焦点在那个文本框中，便于实现按钮输入Text1.Text = Text1.Text & 0End IfIf isFocus2 ThenText2.Text = Text2.Text & 0End IfEnd SubPrivate Sub Command10_Click() If isFocus1 ThenText1.Text = Text1.Text & 9 End IfIf isFocus2 ThenText2.Text = Text2.Text & 9 End IfEnd SubPrivate Sub Command11_Click() If isFocus1 ThenText1.Text = Text1.Text & "." End IfIf isFocus2 ThenText2.Text = Text2.Text & "." End IfEnd SubPrivate Sub Command12_Click() If isFocus1 ThenText1.Text = -Val(Text1.Text)End IfIf isFocus2 ThenText2.Text = -Val(Text2.Text)End IfEnd SubPrivate Sub Command13_Click()Dim a As Integera = Val(Text1.Text) + Val(Text2.Text)Text3.Text = Val(Text1.Text) & "+" & Val(Text2.Text) & "=" & aIf Text1.Text = "" Or Text2.Text = "" ThenMsgBox "哼哼，双目运算一定要是两个数喔" & vbCrLf & vbCrLf & _ "不用说，补上去是必须的撒", vbCritical, "温馨小提醒(*^__^*)" End IfEnd SubPrivate Sub Command14_Click()Dim a As Integera = Val(Text1.Text) - Val(Text2.Text)Text3.Text = Val(Text1.Text) & "-" & Val(Text2.Text) & "=" & aIf Text1.Text = "" Or Text2.Text = "" ThenMsgBox "哼哼，双目运算一定要是两个数喔" & vbCrLf & vbCrLf & _ "不用说，补上去是必须的撒", vbCritical, "温馨小提醒(*^__^*)" End IfEnd SubPrivate Sub Command15_Click()a = Val(Text1.Text) * Val(Text2.Text)Text3.Text = Val(Text1.Text) & "×" & Val(Text2.Text) & "=" & aIf Text1.Text = "" Or Text2.Text = "" ThenMsgBox "哼哼，双目运算一定要是两个数喔" & vbCrLf & vbCrLf & _ "不用说，补上去是必须的撒", vbCritical, "温馨小提醒(*^__^*)" End IfEnd SubPrivate Sub Command16_Click() '除法的特殊性，除数不能为零If Val(Text2.Text) Thena = Val(Text1.Text) / Val(Text2.Text)Text3.Text = Val(Text1.Text) & "÷" & Val(Text2.Text) & "=" & aIf Text1.Text = "" Or Text2.Text = "" ThenMsgBox "哼哼，双目运算一定要是两个数喔" & vbCrLf & vbCrLf & _ "不用说，补上去是必须的撒", vbCritical, "温馨小提醒(*^__^*)" End IfElseText3.Text = "无穷大∞"MsgBox "亲，除数不可以为零的哟！", vbInformation, "矮油，不得了嘞(*^__^*)"Text2.Text = ""Text2.SetFocusEnd IfEnd SubPrivate Sub Command17_Click() '实现清零，并将焦点给文本框1Text1.Text = ""Text2.Text = ""Text3.Text = ""Text1.SetFocusEnd SubPrivate Sub Command18_Click()Me.Hide '进入计算器1Form1.ShowEnd SubPrivate Sub Command2_Click() If isFocus1 ThenText1.Text = Text1.Text & 1 End IfIf isFocus2 ThenText2.Text = Text2.Text & 1 End IfEnd SubPrivate Sub Command3_Click() If isFocus1 ThenText1.Text = Text1.Text & 2 End IfIf isFocus2 ThenText2.Text = Text2.Text & 2 End IfEnd SubPrivate Sub Command4_Click() If isFocus1 ThenText1.Text = Text1.Text & 3 End IfIf isFocus2 ThenText2.Text = Text2.Text & 3 End IfEnd SubPrivate Sub Command5_Click() If isFocus1 ThenText1.Text = Text1.Text & 4 End IfIf isFocus2 ThenText2.Text = Text2.Text & 4 End IfEnd SubPrivate Sub Command6_Click() If isFocus1 ThenText1.Text = Text1.Text & 5 End IfIf isFocus2 ThenText2.Text = Text2.Text & 5 End IfEnd SubPrivate Sub Command7_Click() If isFocus1 ThenText1.Text = Text1.Text & 6 End IfIf isFocus2 ThenText2.Text = Text2.Text & 6 End IfEnd SubPrivate Sub Command8_Click() If isFocus1 ThenText1.Text = Text1.Text & 7 End IfIf isFocus2 ThenText2.Text = Text2.Text & 7 End IfEnd SubPrivate Sub Command9_Click() If isFocus1 ThenText1.Text = Text1.Text & 8End IfIf isFocus2 ThenText2.Text = Text2.Text & 8End IfEnd SubPrivate Sub Form_Load()isFocus1 = False: isFocus2 = FalseEnd SubPrivate Sub Form_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)Label4.ForeColor = vbBlackLabel4.FontUnderline = FalseLabel4.FontBold = FalseEnd SubPrivate Sub Label4_Click()Form3.ShowEnd SubPrivate Sub Label4_MouseMove(Button As Integer, Shift As Integer, X AsSingle, Y As Single)Label4.ForeColor = vbGreen Label4.FontUnderline = True Label4.FontBold = True End SubPrivate Sub Text1_GotFocus() isFocus1 = TrueisFocus2 = FalseEnd SubPrivate Sub Text2_GotFocus() isFocus2 = TrueisFocus1 = FalseEnd Sub页面（form3）：这里面的亮点自己找哦。
VB简易计算器代码
VB简易计算器代码以下是一个简单的VB计算器代码：```Public Class Form1Dim firstNum As Double ' 第一个数字Dim secondNum As Double ' 第二个数字Dim operation As Integer ' 1-加法，2-减法，3-乘法，4-除法Private Sub Button0_Click(sender As Object, e As EventArgs) Handles Button0.ClickTextBoxResult.Text = TextBoxResult.Text & "0"End SubPrivate Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.ClickTextBoxResult.Text = TextBoxResult.Text & "1"End SubPrivate Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.ClickTextBoxResult.Text = TextBoxResult.Text & "2"End SubHandles Button3.ClickTextBoxResult.Text = TextBoxResult.Text & "3"End SubPrivate Sub Button4_Click(sender As Object, e As EventArgs) Handles Button4.ClickTextBoxResult.Text = TextBoxResult.Text & "4"End SubPrivate Sub Button5_Click(sender As Object, e As EventArgs) Handles Button5.ClickTextBoxResult.Text = TextBoxResult.Text & "5"End SubPrivate Sub Button6_Click(sender As Object, e As EventArgs) Handles Button6.ClickTextBoxResult.Text = TextBoxResult.Text & "6"End SubPrivate Sub Button7_Click(sender As Object, e As EventArgs) Handles Button7.ClickTextBoxResult.Text = TextBoxResult.Text & "7"End SubHandles Button8.ClickTextBoxResult.Text = TextBoxResult.Text & "8"End SubPrivate Sub Button9_Click(sender As Object, e As EventArgs) Handles Button9.ClickTextBoxResult.Text = TextBoxResult.Text & "9"End SubPrivate Sub ButtonDot_Click(sender As Object, e As EventArgs) Handles ButtonDot.ClickIf Not TextBoxResult.Text.Contains(".") ThenTextBoxResult.Text = TextBoxResult.Text & "."End IfEnd SubPrivate Sub ButtonAdd_Click(sender As Object, e As EventArgs) Handles ButtonAdd.ClickfirstNum = Double.Parse(TextBoxResult.Text)TextBoxResult.Text = ""operation = 1End SubPrivate Sub ButtonSubtract_Click(sender As Object, e As EventArgs) Handles ButtonSubtract.ClickfirstNum = Double.Parse(TextBoxResult.Text)TextBoxResult.Text = ""operation = 2End SubPrivate Sub ButtonMultiply_Click(sender As Object, e As EventArgs) Handles ButtonMultiply.ClickfirstNum = Double.Parse(TextBoxResult.Text)TextBoxResult.Text = ""operation = 3End SubPrivate Sub ButtonDivide_Click(sender As Object, e As EventArgs) Handles ButtonDivide.ClickfirstNum = Double.Parse(TextBoxResult.Text)TextBoxResult.Text = ""operation = 4End SubPrivate Sub ButtonClear_Click(sender As Object, e As EventArgs) Handles ButtonClear.ClickTextBoxResult.Text = ""End SubPrivate Sub ButtonEquals_Click(sender As Object, e As EventArgs) Handles ButtonEquals.ClickDim result As DoublesecondNum = Double.Parse(TextBoxResult.Text)Select Case operationCase 1result = firstNum + secondNumCase 2result = firstNum - secondNumCase 3result = firstNum * secondNumCase 4result = firstNum / secondNumEnd SelectTextBoxResult.Text = result.ToStringEnd SubEnd Class```这个计算器包括数字按钮0-9、小数点按钮、加法、减法、乘法、除法和等于按钮。
用VB6.0编写一个小计算器
在左侧工具栏中，选择输入框，在窗口界面中
设置三个合适大小的输入框
制作中...
修改输入框内文字：选择输入框在属性处找到
text，将右边文字修改。
添加一个按钮，名称和软件名相同改法
双击软件界面 提示：一号框(左上)×二号框(右上)＝三号框 (左下)，我们要输入：(注意空格)
PrivateSubCommand1_Click() OnErrorGoto1
用 VB6.0 编写一个小计算器
y2a3d 计算器在线计算 /
教大家制作一个小软件——乘法计算器软件
VB6.0 方法
打开 VB6.0 选择“标准 EXE”
首先，在属性中的 caption 处，将 Form1(软
件名)改为自己喜爱的名字
按住窗口的调整按钮，将窗口调整为合适大小
Text3.Text=Text1.Text*Text2.Text ExitSub
1: msgbox 请输入正确数据,,出错啦...
EndSub 点击文件→生成工程
生成成功！ 上面框内输入乘数，点击按钮，计算出结果显 示在下面框内！
注意事项 千万注意代码中的空格
VBNET简易计算器制作与实现
简易计算器的实现：图形及代码如下：Option Strict OffOption Explicit OnImports VB = Microsoft.VisualBasicPublic Class Form1Inherits System.Windows.Forms.FormDim x, y, z As DoubleDim oper As CharDim i As IntegerPrivate Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Loadx = 0y = 0z = 0oper = ""i = 0End Sub'数字Private Sub chiffre(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles B0.Click, B1.Click, B2.Click, B3.Click, B4.Click, B5.Click, B6.Click, B7.Click, B8.Click, B9.ClickIf Label1.Text = "0"ThenLabel1.Text = CStr(sender.text)Exit SubElseIf i = 1 ThenLabel1.Text = CStr(sender.text)i = 2ElseIf i = 3 ThenLabel1.Text = CStr(sender.text)Label2.Text = ""i = 0ElseLabel1.Text = Label1.Text & CStr(sender.text)End IfEnd IfEnd IfEnd Sub'小数点Private Sub deci_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles deci.ClickIf i = 0 ThenIf InStr(Label1.Text, ".") = 0 ThenLabel1.Text = Label1.Text & "."End IfElseIf i = 1 ThenLabel1.Text = "0"i = 2ElseIf i = 2 ThenIf InStr(Label1.Text, ".") = 0 ThenLabel1.Text = Label1.Text & "."End IfElseIf i = 3 ThenLabel1.Text = "0"Label2.Text = " "i = 0End IfEnd IfEnd IfEnd IfEnd Sub'正负号Private Sub pm_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles pm.Click If Val(Label1.Text) > 0 ThenLabel1.Text = "-" + Label1.TextElseLabel1.Text = -Val(Label1.Text)End IfEnd Sub'运算符Private Sub operation(ByVal sender As System.Object, ByVal e As System.EventArgs) Handlesmult.Click, div.Click, plus.Click, minus.Clickx = Val(Label1.Text)oper = CStr(sender.text)i = 1Label2.Text = Label1.Text + CStr(sender.text)End Sub'加减乘除运算Private Sub egale_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles egale.ClickIf y = 0 Theny = Val(Label1.Text)End IfIf oper = "/"Thenz = x / yx = zLabel1.Text = zElseIf oper = "-"Thenz = x - yx = zLabel1.Text = zElseIf oper = "*"Thenz = x * yx = zLabel1.Text = zElseIf oper = "+"Thenz = x + yx = zLabel1.Text = zEnd IfIf oper = "/"And y = 0 ThenLabel1.Text = "除数不能为零"End IfLabel1.Text = zLabel2.Text = " "i = 3End Sub'开平方根Private Sub sqrt_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles sqrt.ClickLabel2.Text = "sqrt(" & Label1.Text & ")"Label1.Text = System.Math.Sqrt(Val(Label1.Text))i = 3End Sub'百分号%Private Sub perc_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles pec.ClickIf i = 0 ThenLabel1.Text = "0"ElseIf i = 2 Theny = Val(Label1.Text) / 100 * xLabel1.Text = yLabel2.Text = x & oper & yEnd IfEnd IfEnd Sub'倒数Private Sub pe_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles pe.Click y = Val(Label1.Text)Label2.Text = "reciproc(" & Label1.Text & ")"If Label1.Text > 0 Theny = 1 / yLabel1.Text = CStr(y)ElseLabel1.Text = "除数不能为零"End Ifi = 3End Sub'退格Private Sub back_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BS.ClickIf Len(Label1.Text) <> 1 ThenLabel1.Text = Microsoft.VisualBasic.Left(Label1.Text, Len(Label1.Text) - 1) ElseLabel1.Text = "0"End IfEnd Sub'重新输入CEPrivate Sub dele_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CE.ClickLabel1.Text = "0"If i = 1 Theni = 2End IfEnd Sub'全部清空CPrivate Sub clear_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles C.ClickLabel1.Text = "0"Label2.Text = ""x = 0y = 0z = 0oper = ""i = 0End SubEnd Class。
VB制作简单计算器的过程
三、还有需要加强改进的地方？
If Left(Text1.Textd1(Index).Caption
Else
Text1.Text = Text1.Text & Command1(Index).Caption
例如：
依次按下“100”、“÷”、“5”，然后再按下“C”，再依次按下“2”、“=”，显示为2。这说明将前面的100÷5都清降掉了.
而依次按下“100”、“÷”、“5”，再按下“CE”，再依次按下“2”、“=”，显示为50，即清除了5,执行了100÷2的操作。
10、前导零不显示
例如："00123"，"00.123"
Abs(shu1)：取绝对值
len(shu1)：测量字符串shu1的长度
left(shu1,n)：返回字符shu1中左边n个字符
right(shu1,n)：返回字符shu1中右边n个字符
Instr(n,shu1,”.”)：找出小数点在shu1中第n次出现的位置
End If
If InStr(1, Text1.Text, ".") = 0 Then
Text1.Text = Text1.Text & "."
End If
If InStr(1, Text1.Text, ".") = 1 Then
Text1.Text = "0" & Text1.Text
9、纠错
说明：C与CE的区别
C键为清除键(CLEAR的缩写) 功能清除所有操作从头再来
CE键为纠错键(CLEAR ERROR的缩写)功能当前操作数归零可以重新输入操作。
VB编写简单计算器程序
Option ExplicitDim LastInput As String * 3 '记录上次按下的按键Dim Num1 As Double '第一个操作数Dim Num2 As Double '第二个操作数Dim OptType As Integer '按下哪一个操作符Dim Result As Double '表示运算结果Dim shuzhi As Integer '表示当前采用的shuzhiDim FirstNum As Boolean '是否是第一个操作数Sub keyp(keynum As Integer)Dim CHAR As String * 1CHAR = Chr(keynum)If CHAR = "+" Or keynum = 43 Then Command5(0).Value = TrueIf CHAR = "-" Or keynum = 45 Then Command5(1).Value = TrueIf CHAR = "*" Or keynum = 42 Then Command5(2).Value = TrueIf CHAR = "/" Or keynum = 47 Then Command5(3).Value = TrueIf shuzhi = 2 And CHAR >= "2" And CHAR <= "9" Thenkeynum = 0Exit SubEnd IfIf keynum >= 48 And keynum <= 57 Then Command1(keynum - 48).Value = True If keynum = 46 Then Command2.Value = TrueIf UCase(CHAR) = "C" Then Command3.Value = TrueIf keynum = 27 Then Command4.Value = TrueIf keynum = 61 Then Command6.Value = Truekeynum = 0End SubFunction angle(ByVal j1 As Integer) As Singleangle = j1If Option1.Value Then angle = j1 * 3.14 / 180End FunctionFunction ArcSin(ByVal Num As Single) As SingleIf Num = 1 ThenArcSin = 3.1415926 / 2ElseIf Num = -1 ThenArcSin = 3.1415926 * 3 / 2ElseArcSin = Atn(Num / Sqr(-Num * Num + 1))End IfIf Option1.Value Then ArcSin = ArcSin * 180 / 3.1415926End FunctionFunction ArcCos(ByVal Num As Single) As SingleIf Num = 1 ThenArcCos = 0ElseIf Num = -1 ThenArcCos = 3.1415926ElseArcCos = Atn(-Num / Sqr(-Num * Num + 1)) + 2 * Atn(1)End IfIf Option1.Value Then ArcCos = ArcCos * 180 / 3.1415926 End FunctionFunction jiecheng(ByVal n As Integer) As SingleDim COUNT As Integerjiecheng = 1For COUNT = 1 To njiecheng = jiecheng * COUNTNextEnd FunctionFunction n10to2(ByVal Number As Single) As SingleDim IntN As Long 'Number的整数部分Dim FracN As Single 'Number的小数部分Dim ModN As Integer '整数部分换算时，记录余数Dim RltN As String '换算结果Dim i As IntegerIf InStr(Number, "e") > 0 Or InStr(Number, "E") > 0 Then MsgBox "不能转换以科学记数法表示的数据！"Exit FunctionEnd IfModN = 0'Number = Val(Text1.Text)IntN = Int(Number)FracN = Number - IntN'以下代码用于将十进制的整数部分换算为二进制Do While IntN > 0ModN = IntN Mod 2IntN = IntN \ 2RltN = ModN & RltNLoopRltN = RltN & "."i = 1'以下代码用于将十进制的小数部分换算为二进制Do While i <= 7 Or FracN <> 0FracN = FracN * 2If FracN >= 1 ThenFracN = FracN - 1RltN = RltN & "1"ElseRltN = RltN & "0"End Ifi = i + 1Loopn10to2 = RltN'Option3.Value = TrueEnd FunctionFunction n2to10(ByVal Number As Double) As SingleDim i As Integer, j As IntegerDim IntN As Long, FracN As SingleDim RltN As SingleDim POS As Integer '记录小数点位置If InStr(Number, "e") > 0 Or InStr(Number, "E") > 0 ThenMsgBox "不能转换以科学记数法表示的数据！"Exit FunctionEnd IfOn Error GoTo ErrIntN = Int(Number)FracN = Number - IntNDo While IntN > 0 '换算整数部分RltN = RltN + (IntN Mod 10) * 2 ^ jj = j + 1IntN = IntN \ 10LoopPOS = InStr(1, Str(FracN), ".")j = -1For i = POS + 1 To Len(Str(FracN)) '换算小数部分RltN = RltN + 2 ^ j * Val(Mid(Str(FracN), i, 1))j = j - 1Next in2to10 = RltN'Option4.Value = TrueExit FunctionErr:Text1.Text = "数据太大，溢出！"End FunctionPrivate Sub Command1_Click(Index As Integer)'当按下数字键（0-9）时，向文本框尾部追加数据'并通过变量LastInput记录上次按键为数字键If Len(Text1.Text) > 16 Then Exit SubIf Text1.Text = "0" Or LastInput = "Eqv" Then Text1.Text = ""Text1.Text = Text1.Text & Index '追加数据LastInput = "Num"Command1(0).SetFocusEnd SubPrivate Sub Command1_KeyPress(Index As Integer, KeyAscii As Integer) Call keyp(KeyAscii)End SubPrivate Sub Command2_Click()'按下小数点按钮的处理过程'如果数据位数超出范围，或数据中已包含小数点，退出本过程If Len(Text1.Text) > 16 Or InStr(1, Text1.Text, ".") > 0 _And LastInput <> "Eqv" Then Exit Sub'如果以"."开始输入新数据，在"."前加"0"；'如果在数据输入过程中按下"."，直接将"."追加在数据尾部If LastInput = "Opt" Or LastInput = "Eqv" Or LastInput = "Neg" Then Text1.Text = Text1.Text + "0."ElseText1.Text = Text1.Text + "."End IfLastInput = "Num"Command1(0).SetFocusEnd SubPrivate Sub Command3_Click()'按下"C"(取消) 按钮的Click 事件过程'重新设置并初始化变量。
用VB编写计算器程序
2、单击数组命令按钮Command1触发事件
Private Sub Command2_Click(Index As Integer)
Text1.Text = jsq.Eval(Tex事件，调用脚本控制器部件
脚本控制器部件Scriptcontrol改名为jsq,利用它的Eval值
Text1.Text = (Text1.Text) ^ 2
End Sub 进行平方的运算 (Text1.Text) ^ 2在Visual Basic中表示平方运算
Private Sub Command4_Click()
Text1.Text = “ " End Sub 文本框Text1.text为空表示计算器清除
用vb编写计算器程序用vb编写计算器用vb编写简单计算器用vb编写科学计算器用vb编写简易计算器vb编写计算器vb编写简易计算器vb简易计算器程序vb计算器程序如何用vb制作计算器
Private Sub Command1_Click(Index As Integer)
Text1.Text = Text1.Text + Command1(Index).Caption End Sub 解读程序： 1、数组命令按钮Command1（index）
进行加减乘除的运算，例如：jsq. Eval(8X9)=72
Private Sub Command3_Click()
Text1.Text = Sqr(Text1.Text) End Sub 进行开平方的运算 Sqr在Visual Basic中表示开平方运算
Private Sub Command5_Click()
Private Sub Command6_Click()
Unload Me End Sub
表示退出计算器
VB写简易计算器附图
用V B6.0编写简易计算器效果图：废话不多说，直接上步骤一、创建控件组1、创建控件组的方法??首先创建一个命令按钮，调整其大小（觉得合适就行），名称为Command1，Caption属性为数字 0 ；然后进行“复制”和“粘贴”，当选择“粘贴”时，出现对话框提示已有一个同名控件，询问是否创建控件组，选择“是”后，即创建了一个名为“Command”的控件组。
这时，第一个按钮的Index属性值默认为“0”，第二个的Index属性值自动设为“1”，并且大小与第一个按钮相同，只需修改其 Caption 属性为数字“1”并将其拖至合适位置即可。
此后继续使用“粘贴”的方法建立其他控件组中其余按钮，共20个按钮，每建立一个，就将它拖到合适处，并修改相应的Caption属性值。
二、编写代码Dim s1 As Single, s2 As Single, ysf As String'定义两个单精度数变量用与存放参与运算的数,一个字符型存放运算符Private Sub Command1_Click(Index As Integer)Text1.Text = Text1.Text & Command1(Index).Caption'将command1的单击事件与文本框显示的内容连接End SubPrivate Sub Command2_Click()Text1.Text = Text1.Text + "."If (InStr(Text1.Text, ".") = 1) Then'第一位不能为小数Text1.Text = ""End IfIf InStr(Text1.Text, ".") < Len(Text1.Text) Then '防止出现两个小数点Text1.Text = Left(Text1.Text, Len(Text1.Text) - 1)End IfEnd SubPrivate Sub Command3_Click()s2 = Val(Text1.Text) '开始加减乘除运算Select Case ysfCase "+"Text1.Text = s1 + s2Case "-"Text1.Text = s1 - s2Case "*"Text1.Text = s1 * s2Case "/"If s2 = 0 ThenMsgBox "分母不能为零!"Text1.Text = ""ElseText1.Text = s1 / s2End IfEnd SelectText1 = IIf(Left(Text1.Text, 1) = ".", 0 & Text1.Text, Text1.Text) '这个很关键，如果没有这个的话，得出小于1的小数前面没有0End SubPrivate Sub Command4_Click()If Text1.Text = "" Then '文本为空就结束Exit SubEnd IfText1.Text = Left(Text1.Text, Len(Text1.Text) - 1) '文本退一格End SubPrivate Sub Command5_Click()Text1.Text = "" '清除当前框内文本End SubPrivate Sub Command6_Click(Index As Integer)s1 = Val(Text1.Text) '将s1隐藏起来ysf = Command6(Index).CaptionText1.Text = ""End SubPrivate Sub Command7_Click()If Left(Text1.Text, 1) <> "-" Then '判断作为负数Text1.Text = "-" & Text1.TextElseText1.Text = Right(Text1.Text, Len(Text1.Text) - 1)End IfEnd SubPrivate Sub Command8_Click()Text1.Text = Text1.Text * Text1.Text '平方End Sub各位朋友，可以将红色代码复制到相应位置，不清楚的可以全选复制，但是一定要按照我的步骤和给的名称来哦！还可以再添加按钮Private Sub Command9_Click() '这是退出代码EndEnd Sub三、测试，成功的话给个好评哦！谢谢各位下载与支持！这个可以编写作为作业哦！。
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用VB6.0编写简易计算器
效果图：
废话不多说，直接上步骤
一、创建控件组
1、创建控件组的方法
首先创建一个命令按钮，调整其大小（觉得合适就行），名称为Command1，Caption 属
性为数字 0 ；然后进行“复制”和“粘贴”，当选择“粘贴”时，出现对话框提示已有一个同名控件，询问是否创建控件组，选择“是”后，即创建了一个名为“Command”的控件组。
这时，第一个按钮的Index属性值默认为“0”，第二个的Index属性值自动设为“1”，并
且大小与第一个按钮相同，只需修改其 Caption 属性为数字“1”并将其拖至合适位置即可。
此后继续使用“粘贴”的方法建立其他控件组中其余按钮，共20个按钮，每建立一个，就将它拖到合适处，并修改相应的Caption属性值。
2、各控件组其属性设置如下：
设置效果如下图所示：
二、编写代码
Dim s1 As Single, s2 As Single, ysf As String
'定义两个单精度数变量用与存放参与运算的数,一个字符型存放运算符
Private Sub Command1_Click(Index As Integer)
Text1.Text = Text1.Text & Command1(Index).Caption
'将command1的单击事件与文本框显示的内容连接
End Sub
Private Sub Command2_Click()
Text1.Text = Text1.Text + "."
If (InStr(Text1.Text, ".") = 1) Then'第一位不能为小数
Text1.Text = ""
End If
If InStr(Text1.Text, ".") < Len(Text1.Text) Then '防止出现两个小数点
Text1.Text = Left(Text1.Text, Len(Text1.Text) - 1)
End If
End Sub
Private Sub Command3_Click()
s2 = Val(Text1.Text) '开始加减乘除运算
Select Case ysf
Case "+"
Text1.Text = s1 + s2
Case "-"
Text1.Text = s1 - s2
Case "*"
Text1.Text = s1 * s2
Case "/"
If s2 = 0 Then
MsgBox "分母不能为零!"
Text1.Text = ""
Else
Text1.Text = s1 / s2
End If
End Select
Text1 = IIf(Left(Text1.Text, 1) = ".", 0 & Text1.Text, Text1.Text) '这个很关键，如果没有这个的话，得出小于1的小数前面没有0
End Sub
Private Sub Command4_Click()
If Text1.Text = "" Then '文本为空就结束
Exit Sub
End If
Text1.Text = Left(Text1.Text, Len(Text1.Text) - 1) '文本退一格
End Sub
Private Sub Command5_Click()
Text1.Text = "" '清除当前框内文本
End Sub
Private Sub Command6_Click(Index As Integer)
s1 = Val(Text1.Text) '将s1隐藏起来
ysf = Command6(Index).Caption
Text1.Text = ""
End Sub
Private Sub Command7_Click()
If Left(Text1.Text, 1) <> "-" Then '判断作为负数
Text1.Text = "-" & Text1.Text
Else
Text1.Text = Right(Text1.Text, Len(Text1.Text) - 1)
End If
End Sub
Private Sub Command8_Click()
Text1.Text = Text1.Text * Text1.Text '平方
End Sub
各位朋友，可以将红色代码复制到相应位置，不清楚的可以全选复制，但是一定要按照我的步骤和给的名称来哦！
还可以再添加按钮
Private Sub Command9_Click() '这是退出代码
End
End Sub
三、测试，成功的话给个好评哦！谢谢各位下载与支持！
这个可以编写作为作业哦！。