?? calculator.frm
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Size = 12
Charset = 134
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 495
Left = 360
TabIndex = 2
Top = 2880
Width = 615
End
Begin VB.CommandButton cmd0
Caption = "0"
BeginProperty Font
Name = "宋體"
Size = 12
Charset = 134
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 495
Left = 1200
TabIndex = 1
Top = 3600
Width = 615
End
Begin VB.Label lblCalc
Alignment = 1 'Right Justify
BackColor = &H00FFFFFF&
BorderStyle = 1 'Fixed Single
Caption = "0"
BeginProperty Font
Name = "宋體"
Size = 12
Charset = 134
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 735
Left = 360
TabIndex = 0
Top = 360
Width = 4335
End
End
Attribute VB_Name = "frmcalc"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim Operator As String
Dim Operand1 As Single
Dim Operand2 As Single
Dim flag As Integer
Private Sub cmd0_Click()
If flag = 0 Then
If Val(lblCalc.Caption) <> 0 Or InStr(1, lblCalc.Caption, ".") > 0 Then
lblCalc.Caption = lblCalc.Caption + Me.cmd0.Caption
Else
lblCalc.Caption = Me.cmd0.Caption
End If
Else
If flag = 1 Then
lblCalc.Caption = Me.cmd0.Caption
flag = 0
End If
End If
End Sub
Private Sub cmd1_Click()
If flag = 0 Then
If Val(lblCalc.Caption) <> 0 Or InStr(1, lblCalc.Caption, ".") > 0 Then
lblCalc.Caption = lblCalc.Caption + Me.cmd1.Caption
Else
lblCalc.Caption = Me.cmd1.Caption
End If
Else
If flag = 1 Then
lblCalc.Caption = Me.cmd1.Caption
flag = 0
End If
End If
End Sub
Private Sub cmd2_Click()
If flag = 0 Then
If Val(lblCalc.Caption) <> 0 Or InStr(1, lblCalc.Caption, ".") > 0 Then
lblCalc.Caption = lblCalc.Caption + Me.cmd2.Caption
Else
lblCalc.Caption = Me.cmd2.Caption
End If
Else
If flag = 1 Then
lblCalc.Caption = Me.cmd2.Caption
flag = 0
End If
End If
End Sub
Private Sub cmd3_Click()
If flag = 0 Then
If Val(lblCalc.Caption) <> 0 Or InStr(1, lblCalc.Caption, ".") > 0 Then
lblCalc.Caption = lblCalc.Caption + Me.cmd3.Caption
Else
lblCalc.Caption = Me.cmd3.Caption
End If
Else
If flag = 1 Then
lblCalc.Caption = Me.cmd3.Caption
flag = 0
End If
End If
End Sub
Private Sub cmd4_Click()
If flag = 0 Then
If Val(lblCalc.Caption) <> 0 Or InStr(1, lblCalc.Caption, ".") > 0 Then
lblCalc.Caption = lblCalc.Caption + Me.cmd4.Caption
Else
lblCalc.Caption = Me.cmd4.Caption
End If
Else
If flag = 1 Then
lblCalc.Caption = Me.cmd4.Caption
flag = 0
End If
End If
End Sub
Private Sub cmd5_Click()
If flag = 0 Then
If Val(lblCalc.Caption) <> 0 Or InStr(1, lblCalc.Caption, ".") > 0 Then
lblCalc.Caption = lblCalc.Caption + Me.cmd5.Caption
Else
lblCalc.Caption = Me.cmd5.Caption
End If
Else
If flag = 1 Then
lblCalc.Caption = Me.cmd5.Caption
flag = 0
End If
End If
End Sub
Private Sub cmd6_Click()
If flag = 0 Then
If Val(lblCalc.Caption) <> 0 Or InStr(1, lblCalc.Caption, ".") > 0 Then
lblCalc.Caption = lblCalc.Caption + Me.cmd6.Caption
Else
lblCalc.Caption = Me.cmd6.Caption
End If
Else
If flag = 1 Then
lblCalc.Caption = Me.cmd6.Caption
flag = 0
End If
End If
End Sub
Private Sub cmd7_Click()
If flag = 0 Then
If Val(lblCalc.Caption) <> 0 Or InStr(1, lblCalc.Caption, ".") > 0 Then
lblCalc.Caption = lblCalc.Caption + Me.cmd7.Caption
Else
lblCalc.Caption = Me.cmd7.Caption
End If
Else
If flag = 1 Then
lblCalc.Caption = Me.cmd7.Caption
flag = 0
End If
End If
End Sub
Private Sub cmd8_Click()
If flag = 0 Then
If Val(lblCalc.Caption) <> 0 Or InStr(1, lblCalc.Caption, ".") > 0 Then
lblCalc.Caption = lblCalc.Caption + Me.cmd8.Caption
Else
lblCalc.Caption = Me.cmd8.Caption
End If
Else
If flag = 1 Then
lblCalc.Caption = Me.cmd8.Caption
flag = 0
End If
End If
End Sub
Private Sub cmd9_Click()
If flag = 0 Then
If Val(lblCalc.Caption) <> 0 Or InStr(1, lblCalc.Caption, ".") > 0 Then
lblCalc.Caption = lblCalc.Caption + Me.cmd9.Caption
Else
lblCalc.Caption = Me.cmd9.Caption
End If
Else
If flag = 1 Then
lblCalc.Caption = Me.cmd9.Caption
flag = 0
End If
End If
End Sub
Private Sub cmdAdd_Click()
flag = 1
Operator = "+"
Operand1 = Val(lblCalc.Caption)
End Sub
Private Sub cmdCE_Click()
Operand2 = 0
lblCalc.Caption = "0"
flag = 1
End Sub
Private Sub CmdClear_Click()
lblCalc.Caption = "0"
Operand1 = 0
Operand2 = 0
Operator = ""
flag = 0
End Sub
Private Sub cmdDiv_Click()
flag = 1
Operator = "/"
Operand1 = Val(lblCalc.Caption)
End Sub
Private Sub cmdDot_Click()
If InStr(1, lblCalc.Caption, ".") = 0 Then
lblCalc.Caption = lblCalc.Caption + "."
End If
End Sub
Private Sub cmdMlt_Click()
flag = 1
Operator = "*"
Operand1 = Val(lblCalc.Caption)
End Sub
Private Sub cmdRslt_Click()
Dim result As Single
If Operator <> "" Then
Operand2 = Val(lblCalc.Caption)
Select Case Operator
Case "+"
lblCalc.Caption = Operand1 + Operand2
Case "-"
lblCalc.Caption = Operand1 - Operand2
Case "*"
lblCalc.Caption = Operand1 * Operand2
Case "/"
If Operand2 = 0 Then
lblCalc.Caption = "除數(shù)不能為零"
Else
lblCalc.Caption = Operand1 / Operand2
End If
End Select
Operator = ""
End If
flag = 1
End Sub
Private Sub cmdSign_Click()
If Left(lblCalc.Caption, 1) = "-" Then
lblCalc.Caption = Right(lblCalc.Caption, Len(lblCalc.Caption) - 1)
Else
If Val(lblCalc.Caption) <> 0 Then
lblCalc.Caption = "-" + lblCalc.Caption
End If
End If
End Sub
Private Sub cmdSub_Click()
flag = 1
Operator = "-"
Operand1 = Val(lblCalc.Caption)
End Sub
Private Sub Form_Load()
Me.Caption = "My Calculator"
lblCalc.Caption = "0"
Operand1 = 0
Operand2 = 0
Operator = ""
flag = 0
End Sub
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