📄 form1.frm
字号:
VERSION 5.00
Begin VB.Form Form1
BorderStyle = 1 'Fixed Single
Caption = "计算器"
ClientHeight = 2295
ClientLeft = 150
ClientTop = 435
ClientWidth = 2580
LinkTopic = "Form1"
MaxButton = 0 'False
ScaleHeight = 2295
ScaleWidth = 2580
StartUpPosition = 2 '屏幕中心
Begin VB.CommandButton a
Caption = "Command1"
Height = 255
Left = 3120
TabIndex = 0
Top = 1320
Width = 495
End
Begin VB.CommandButton cmdNum
Caption = "1"
Height = 375
Index = 1
Left = 120
TabIndex = 17
Top = 360
Width = 495
End
Begin VB.CommandButton cmdNum
Caption = "2"
Height = 375
Index = 2
Left = 720
TabIndex = 16
Top = 360
Width = 495
End
Begin VB.CommandButton cmdNum
Caption = "3"
Height = 375
Index = 3
Left = 1320
TabIndex = 15
Top = 360
Width = 495
End
Begin VB.CommandButton cmdNum
Caption = "4"
Height = 375
Index = 4
Left = 120
TabIndex = 14
Top = 840
Width = 495
End
Begin VB.CommandButton cmdNum
Caption = "5"
Height = 375
Index = 5
Left = 720
TabIndex = 13
Top = 840
Width = 495
End
Begin VB.CommandButton cmdNum
Caption = "6"
Height = 375
Index = 6
Left = 1320
TabIndex = 12
Top = 840
Width = 495
End
Begin VB.CommandButton cmdNum
Caption = "7"
Height = 375
Index = 7
Left = 120
TabIndex = 11
Top = 1320
Width = 495
End
Begin VB.CommandButton cmdNum
Caption = "8"
Height = 375
Index = 8
Left = 720
TabIndex = 10
Top = 1320
Width = 495
End
Begin VB.CommandButton cmdNum
Caption = "9"
Height = 375
Index = 9
Left = 1320
TabIndex = 9
Top = 1320
Width = 495
End
Begin VB.CommandButton cmdOK
Caption = "="
Height = 375
Left = 1320
TabIndex = 2
Top = 1800
Width = 495
End
Begin VB.TextBox Text1
Alignment = 1 'Right Justify
Height = 270
Left = 120
Locked = -1 'True
TabIndex = 1
Text = "0"
Top = 0
Width = 2295
End
Begin VB.CommandButton cmdOper
Caption = "+"
Height = 375
Index = 1
Left = 1920
TabIndex = 8
Top = 360
Width = 495
End
Begin VB.CommandButton cmdOper
Caption = "-"
Height = 375
Index = 2
Left = 1920
TabIndex = 7
Top = 840
Width = 495
End
Begin VB.CommandButton cmdOper
Caption = "*"
Height = 375
Index = 3
Left = 1920
TabIndex = 6
Top = 1320
Width = 495
End
Begin VB.CommandButton cmdOper
Caption = "/"
Height = 375
Index = 4
Left = 1920
TabIndex = 5
Top = 1800
Width = 495
End
Begin VB.CommandButton cmdClear
Caption = "C"
Height = 375
Left = 720
TabIndex = 4
Top = 1800
Width = 495
End
Begin VB.CommandButton cmdNum
Caption = "0"
Height = 375
Index = 0
Left = 120
TabIndex = 3
Top = 1800
Width = 495
End
Begin VB.Menu mnuEdit
Caption = "编辑(&E)"
Begin VB.Menu mnuEditCopy
Caption = "复制(&C)"
Shortcut = ^C
End
Begin VB.Menu mnuEditPaste
Caption = "粘贴(&P)"
Shortcut = ^V
End
End
Begin VB.Menu mnuView
Caption = "查看(&V)"
Begin VB.Menu mnuViewStand
Caption = "标准型(&T)"
Checked = -1 'True
End
Begin VB.Menu mnuViewScience
Caption = "科学型(&S)"
End
Begin VB.Menu mnuViewLine0
Caption = "-"
End
Begin VB.Menu mnuViewSep
Caption = "数字分组(&I)"
End
End
Begin VB.Menu mnuHelp
Caption = "帮助(&H)"
Begin VB.Menu mnuHelpTitle
Caption = "帮助主题(&H)"
End
Begin VB.Menu mnuHelpLine0
Caption = "-"
End
Begin VB.Menu mnuHelpAbout
Caption = "关于计算器(&A)"
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
Dim flag As Integer '表示运算符
Dim isClickNumLast As Boolean '上步操作是否按的是数字
Dim isClickOkLast As Boolean '上步操作是否按的是“=”
Dim s1 As String '前一步的值
Dim s2 As String '当前框中的值
Private Sub Form_Load()
Call initValue '初始化数据
End Sub
'点数字的操作
Private Sub cmdNum_Click(Index As Integer)
'如果上一步点的是等于号的话这里就需要将所有变量初始化一下
If isClickOkLast Then Call initValue
'这里文本框的显示很重要，解释如下：
'1.如果上步点的是数字那么这次显示的应该是 Text1.Text & Index
'2.如果上步点的不是数字那么这次显示的应该是 Index
'3.最后加上val是因为防止出现文本框的第一位显示 0
Text1.Text = Val(IIf(isClickNumLast, Text1.Text, "") & Index)
isClickNumLast = True
isClickOkLast = False
a.SetFocus
End Sub
'点运算符的操作
Private Sub cmdOper_Click(Index As Integer)
'这里点按钮的操作也很重要，因为点按钮的同时还要计算出结果并显示出来
'如果上步点的是数字按钮则开始计算并显示
If isClickNumLast Then
Call computeResult
Text1.Text = s1
End If
flag = Index
isClickNumLast = False
isClickOkLast = False
End Sub
'按等于号
Private Sub cmdOK_Click()
Call computeResult
Text1.Text = s1
isClickNumLast = False
isClickOkLast = True
End Sub
'清屏
Private Sub cmdClear_Click() '清屏
Call initValue
a.SetFocus
End Sub
'计算结果
Private Sub computeResult()
If Not isClickOkLast Then s2 = Text1.Text
Select Case flag 'flag为运算符，分别为+-*/
Case 1
s1 = CStr(Val(s1) + Val(s2))
Case 2
s1 = CStr(Val(s1) - Val(s2))
Case 3
s1 = CStr(Val(s1) * Val(s2))
Case 4
s1 = CStr(Val(s1) / Val(s2))
End Select
a.SetFocus
End Sub
'初始化相关数据
Private Sub initValue()
Text1.Text = "0"
s1 = ""
s2 = ""
isClickNumLast = False
isClickOkLast = False
flag = 1
End Sub
'复制
Private Sub mnuEditCopy_Click()
Clipboard.Clear
Clipboard.SetText Text1.Text
End Sub
'关于
Private Sub mnuHelpAbout_Click()
MsgBox "calc | 简易计算器" & vbCrLf & vbCrLf & _
" 作者:sysdzw" & vbCrLf & _
" 主页:http://hi.baidu.com/sysdzw" & vbCrLf & _
" Q Q:171977759" & vbCrLf & _
" 邮箱:sysdzw@163.com" & vbCrLf & vbCrLf & _
"2007-10-24", vbInformation
End Sub
Private Sub mnuViewScience_Click()
mnuViewStand.Checked = False
mnuViewScience.Checked = True
End Sub
Private Sub mnuViewSep_Click()
mnuViewSep.Checked = Not mnuViewSep.Checked
End Sub
Private Sub mnuViewStand_Click()
mnuViewStand.Checked = True
mnuViewScience.Checked = False
End Sub
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