📄 calc.frm
字号:
VERSION 5.00
Begin VB.Form Calculator
AutoRedraw = -1 'True
BackColor = &H00FF0000&
BorderStyle = 1 'Fixed Single
Caption = "计算器"
ClientHeight = 3991
ClientLeft = 2574
ClientTop = 1482
ClientWidth = 5109
ClipControls = 0 'False
BeginProperty Font
Name = "Arial"
Size = 10.87
Charset = 0
Weight = 700
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Icon = "Calc.frx":0000
LinkMode = 1 'Source
MaxButton = 0 'False
PaletteMode = 1 'UseZOrder
ScaleHeight = 3991
ScaleWidth = 5109
StartUpPosition = 2 '屏幕中心
WhatsThisButton = -1 'True
WhatsThisHelp = -1 'True
Begin VB.CommandButton Command4
BackColor = &H00008000&
Caption = "复制"
Height = 612
Left = 3960
Style = 1 'Graphical
TabIndex = 23
Top = 360
Width = 852
End
Begin VB.CommandButton Command3
Caption = "RET"
Height = 492
Left = 3840
TabIndex = 22
Top = 2520
Width = 732
End
Begin VB.CommandButton Command2
Caption = "MR-"
Height = 492
Left = 3840
TabIndex = 21
Top = 1920
Width = 732
End
Begin VB.CommandButton Command1
Caption = "MR+"
Height = 492
Left = 3840
TabIndex = 20
Top = 1320
Width = 732
End
Begin VB.CommandButton Number
Caption = "7"
Height = 480
Index = 7
Left = 600
TabIndex = 7
Top = 1320
Width = 480
End
Begin VB.CommandButton Number
Caption = "8"
Height = 480
Index = 8
Left = 1200
TabIndex = 8
Top = 1320
Width = 480
End
Begin VB.CommandButton Number
Caption = "9"
Height = 480
Index = 9
Left = 1800
TabIndex = 9
Top = 1320
Width = 480
End
Begin VB.CommandButton Cancel
Caption = "C"
Height = 480
Left = 2520
TabIndex = 10
Top = 1320
Width = 480
End
Begin VB.CommandButton CancelEntry
Caption = "CE"
Height = 480
Left = 3120
TabIndex = 11
Top = 1320
Width = 480
End
Begin VB.CommandButton Number
Caption = "4"
Height = 480
Index = 4
Left = 600
TabIndex = 4
Top = 1920
Width = 480
End
Begin VB.CommandButton Number
Caption = "5"
Height = 480
Index = 5
Left = 1200
TabIndex = 5
Top = 1920
Width = 480
End
Begin VB.CommandButton Number
Caption = "6"
Height = 480
Index = 6
Left = 1800
TabIndex = 6
Top = 1920
Width = 480
End
Begin VB.CommandButton Operator
Caption = "+"
Height = 480
Index = 1
Left = 2520
TabIndex = 12
Top = 1920
Width = 480
End
Begin VB.CommandButton Operator
Caption = "-"
Height = 480
Index = 3
Left = 3120
TabIndex = 13
Top = 1920
Width = 480
End
Begin VB.CommandButton Number
Caption = "1"
Height = 480
Index = 1
Left = 600
TabIndex = 1
Top = 2520
Width = 480
End
Begin VB.CommandButton Number
Caption = "2"
Height = 480
Index = 2
Left = 1200
TabIndex = 2
Top = 2520
Width = 480
End
Begin VB.CommandButton Number
Caption = "3"
Height = 480
Index = 3
Left = 1800
TabIndex = 3
Top = 2520
Width = 480
End
Begin VB.CommandButton Operator
Caption = "X"
Height = 480
Index = 2
Left = 2520
TabIndex = 14
Top = 2520
Width = 480
End
Begin VB.CommandButton Operator
Caption = "/"
Height = 480
Index = 0
Left = 3120
TabIndex = 15
Top = 2520
Width = 480
End
Begin VB.CommandButton Number
Caption = "0"
Height = 480
Index = 0
Left = 600
TabIndex = 0
Top = 3120
Width = 1080
End
Begin VB.CommandButton Decimal
Caption = "."
Height = 480
Left = 1800
TabIndex = 18
Top = 3120
Width = 480
End
Begin VB.CommandButton Operator
BackColor = &H000000FF&
Caption = "="
Height = 480
Index = 4
Left = 3120
MaskColor = &H000000FF&
Style = 1 'Graphical
TabIndex = 16
Top = 3120
Width = 1440
End
Begin VB.CommandButton Percent
Caption = "%"
Height = 480
Left = 2520
TabIndex = 17
Top = 3120
Width = 480
End
Begin VB.Label Readout
Alignment = 1 'Right Justify
BackColor = &H0000FFFF&
BorderStyle = 1 'Fixed Single
Caption = "0."
BeginProperty Font
Name = "宋体"
Size = 12.23
Charset = 134
Weight = 700
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
ForeColor = &H00000000&
Height = 492
Left = 720
TabIndex = 19
Top = 360
Width = 3000
End
End
Attribute VB_Name = "Calculator"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
' ------------------------------------------------------------------------
' 版权所有 (C) 1994 Microsoft Corporation
'
' 您可以免费以任何方式使用、修改、复制并分发您认为有用的
' 示例应用程序文件 (或任何修改过的版本)。Microsoft 对任何
' 示例应用程序文件不做任何保证，不负任何责任和义务。
' ------------------------------------------------------------------------
Option Explicit
Dim Op1, Op2 ' 预先输入操作数。
Dim DecimalFlag, Index As Integer ' 小数点存在吗？
Dim NumOps As Integer ' 操作数个数。
Dim LastInput ' 指示上一次按键事件的类型。
Dim OpFlag ' 指示未完成的操作。
Dim TempReadout
Dim MR As Long
' C (取消) 按钮的 Click 事件过程
' 重新设置显示并初始化变量。
Private Sub Cancel_Click()
Readout = Format(0, "0.")
Op1 = 0
Op2 = 0
Form_Load
End Sub
' CE (取消输入) 按钮的 Click 事件过程。
Private Sub CancelEntry_Click()
Readout = Format(0, "0.")
DecimalFlag = False
LastInput = "CE"
End Sub
Private Sub Command1_Click()
MR = MR + Val(Readout.Caption)
If LastInput <> "NEG" Then
LastInput = "OPS"
OpFlag = Operator(Index).Caption
End If
Readout.Caption = "0."
End Sub
Private Sub Command2_Click()
MR = MR - Val(Readout.Caption)
If LastInput <> "NEG" Then
LastInput = "OPS"
'OpFlag = Operator(Index).Caption
End If
'Readout.Caption = "0."
End Sub
Private Sub Command3_Click()
Readout = Str(MR)
If LastInput <> "NEG" Then
LastInput = "OPS"
'OpFlag = Operator(Index).Caption
End If
End Sub
Private Sub Command4_Click()
Clipboard.SetText Readout.Caption
End Sub
' 小数点 (.) 按钮的 Click 事件过程
' 如果上一次按键为运算符，初始化 readout 为 "0."；
' 否则显示时追加一个小数点。
Private Sub Decimal_Click()
If LastInput = "NEG" Then
Readout = Format(0, "-0.")
ElseIf LastInput <> "NUMS" Then
Readout = Format(0, "0.")
End If
DecimalFlag = True
LastInput = "NUMS"
End Sub
' 窗体的初始化过程
' 设置所有变量为其初始值。
Private Sub Form_Load()
DecimalFlag = False
NumOps = 0
LastInput = "NONE"
OpFlag = " "
Readout = Format(0, "0.")
'Decimal.Caption = Format(0, ".")
MR = 0
End Sub
' 数字键 (0-9) 的 Click 事件过程
' 向显示中的数追加新数。
Private Sub Number_Click(Index As Integer)
On Error Resume Next
If LastInput <> "NUMS" Then
Readout = Format(0, ".")
DecimalFlag = False
End If
If DecimalFlag Then
Readout = Readout + Number(Index).Caption
Else
Readout = Left(Readout, InStr(Readout, Format(0, ".")) - 1) + Number(Index).Caption + Format(0, ".")
End If
If LastInput = "NEG" Then Readout = "-" & Readout
LastInput = "NUMS"
End Sub
Private Sub Number_KeyPress(Index As Integer, KeyAscii As Integer)
Select Case KeyAscii
Case Asc("%")
Percent_Click
Case Asc("+")
Operator_Click (1)
Operator(1).SetFocus
Case Asc("-")
Operator_Click (3)
Operator(3).SetFocus
Case Asc("*")
Operator_Click (2)
Operator(2).SetFocus
Case Asc("/")
Operator_Click (0)
Operator(0).SetFocus
Case Asc("0")
Number_Click (0)
Number(0).SetFocus
Case Asc("1")
Number_Click (1)
Number(1).SetFocus
Case Asc("2")
Number_Click (2)
Number(2).SetFocus
Case Asc("3")
Number_Click (3)
Number(3).SetFocus
Case Asc("4")
Number_Click (4)
Number(4).SetFocus
Case Asc("5")
Number_Click (5)
Number(5).SetFocus
Case Asc("6")
Number_Click (6)
Number(6).SetFocus
Case Asc("7")
Number_Click (7)
Number(7).SetFocus
Case Asc("8")
Number_Click (8)
Number(8).SetFocus
Case Asc("9")
Number_Click (9)
Number(9).SetFocus
Case Asc("=")
Operator_Click (4)
End Select
End Sub
' 运算符 (+, -, x, /, =) 的 Click 事件过程
' 如果接下来的按键是数字键，增加 NumOps。
' 如果有一个操作数，则设置 Op1。
' 如果有两个操作数，则将 Op1 设置为 Op1 与
' 当前输入字符串的运算结果，并显示结果。
Private Sub Operator_Click(Index As Integer)
TempReadout = Readout
If LastInput = "NUMS" Then
NumOps = NumOps + 1
End If
Select Case NumOps
Case 0
If Operator(Index).Caption = "-" And LastInput <> "NEG" Then
Readout = "-" & Readout
LastInput = "NEG"
End If
Case 1
Op1 = Readout
If Operator(Index).Caption = "-" And LastInput <> "NUMS" And OpFlag <> "=" Then
Readout = "-"
LastInput = "NEG"
End If
Case 2
Op2 = TempReadout
Select Case OpFlag
Case "+"
Op1 = CDbl(Op1) + CDbl(Op2)
Case "-"
Op1 = CDbl(Op1) - CDbl(Op2)
Case "X"
Op1 = CDbl(Op1) * CDbl(Op2)
Case "/"
If Op2 = 0 Then
MsgBox "除数不能为零", 48, "计算器"
Else
Op1 = CDbl(Op1) / CDbl(Op2)
End If
Case "="
Op1 = CDbl(Op2)
Case "%"
Op1 = CDbl(Op1) * CDbl(Op2)
End Select
Readout = Op1
NumOps = 1
End Select
If LastInput <> "NEG" Then
LastInput = "OPS"
OpFlag = Operator(Index).Caption
End If
End Sub
Private Sub Operator_KeyPress(Index As Integer, KeyAscii As Integer)
Select Case KeyAscii
Case Asc("+")
Operator_Click (1)
Operator(1).SetFocus
Case Asc("-")
Operator_Click (3)
Operator(3).SetFocus
Case Asc("*")
Operator_Click (2)
Operator(2).SetFocus
Case Asc("/")
Operator_Click (0)
Operator(0).SetFocus
Case Asc("0")
Number_Click (0)
Number(0).SetFocus
Case Asc("1")
Number_Click (1)
Number(1).SetFocus
Case Asc("2")
Number_Click (2)
Number(2).SetFocus
Case Asc("3")
Number_Click (3)
Number(3).SetFocus
Case Asc("4")
Number_Click (4)
Number(4).SetFocus
Case Asc("5")
Number_Click (5)
Number(5).SetFocus
Case Asc("6")
Number_Click (6)
Number(6).SetFocus
Case Asc("7")
Number_Click (7)
Number(7).SetFocus
Case Asc("8")
Number_Click (8)
Number(8).SetFocus
Case Asc("9")
Number_Click (9)
Number(9).SetFocus
End Select
End Sub
' 百分比键 (%) 的 Click 事件过程
' 计算并显示第一个操作数的百分数。
Private Sub Percent_Click()
Readout = Readout / 100
LastInput = "Ops"
OpFlag = "%"
NumOps = NumOps + 1
DecimalFlag = True
End Sub
Private Sub Percent_KeyPress(KeyAscii As Integer)
If KeyAscii = Asc("=") Then
Operator_Click (4)
End If
End Sub
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