frmparity.frm

这是一本学习串口编程喝计算机监控的好书里面是用VB开发的源代码

VERSION 5.00
Begin VB.Form frmParity 
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "Parity and Length"
   ClientHeight    =   1455
   ClientLeft      =   45
   ClientTop       =   330
   ClientWidth     =   6750
   Icon            =   "frmParity.frx":0000
   LinkTopic       =   "Form1"
   LockControls    =   -1  'True
   MaxButton       =   0   'False
   ScaleHeight     =   1455
   ScaleWidth      =   6750
   StartUpPosition =   2  'CenterScreen
   Begin VB.CommandButton cmdClear 
      Caption         =   "Clear"
      Height          =   375
      Left            =   5760
      TabIndex        =   12
      Top             =   120
      Width           =   855
   End
   Begin VB.CommandButton cmdQuit 
      Caption         =   "Quit"
      Height          =   375
      Left            =   5760
      TabIndex        =   8
      Top             =   980
      Width           =   855
   End
   Begin VB.CommandButton cmdCalculate 
      Caption         =   "Calculate"
      Height          =   375
      Left            =   5760
      TabIndex        =   6
      Top             =   550
      Width           =   855
   End
   Begin VB.TextBox txtAnswer 
      BeginProperty Font 
         Name            =   "MS Sans Serif"
         Size            =   12
         Charset         =   0
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   345
      Left            =   4680
      OLEDragMode     =   1  'Automatic
      OLEDropMode     =   2  'Automatic
      TabIndex        =   7
      Top             =   960
      Width           =   975
   End
   Begin VB.TextBox txtClientHex 
      BeginProperty Font 
         Name            =   "MS Sans Serif"
         Size            =   12
         Charset         =   0
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   345
      Left            =   600
      OLEDragMode     =   1  'Automatic
      OLEDropMode     =   2  'Automatic
      TabIndex        =   0
      Top             =   120
      Width           =   5055
   End
   Begin VB.Frame Frame1 
      Caption         =   "Parity"
      Height          =   735
      Left            =   120
      TabIndex        =   9
      Top             =   600
      Width           =   4455
      Begin VB.OptionButton optParity 
         Caption         =   "Len"
         Height          =   375
         Index           =   4
         Left            =   3720
         TabIndex        =   5
         Top             =   240
         Width           =   615
      End
      Begin VB.OptionButton optParity 
         Caption         =   "Crc"
         Height          =   375
         Index           =   2
         Left            =   1440
         TabIndex        =   3
         Top             =   240
         Width           =   615
      End
      Begin VB.OptionButton optParity 
         Caption         =   "TCP/IP CheckSum"
         Height          =   375
         Index           =   3
         Left            =   2040
         TabIndex        =   4
         Top             =   240
         Width           =   1695
      End
      Begin VB.OptionButton optParity 
         Caption         =   "Add"
         Height          =   375
         Index           =   1
         Left            =   720
         TabIndex        =   2
         Top             =   240
         Width           =   735
      End
      Begin VB.OptionButton optParity 
         Caption         =   "Xor"
         Height          =   375
         Index           =   0
         Left            =   120
         TabIndex        =   1
         Top             =   240
         Width           =   735
      End
   End
   Begin VB.Label Label2 
      Caption         =   "Result:"
      BeginProperty Font 
         Name            =   "MS Sans Serif"
         Size            =   9.75
         Charset         =   0
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   4680
      TabIndex        =   11
      Top             =   720
      Width           =   735
   End
   Begin VB.Label Label1 
      Caption         =   "Hex:"
      BeginProperty Font 
         Name            =   "MS Sans Serif"
         Size            =   9.75
         Charset         =   0
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   120
      TabIndex        =   10
      Top             =   240
      Width           =   615
   End
End
Attribute VB_Name = "frmParity"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Private ParityMark  As Integer

Private Sub cmdCalculate_Click()
  If txtClientHex.Text = "" Then
    MsgBox "Please input some hex string!", vbExclamation + vbOKOnly
    Exit Sub
  End If
    
  If Len(Trim(txtClientHex.Text)) < 2 Then
    MsgBox "Please input more chars!", vbExclamation + vbOKOnly
    Exit Sub
  End If
    
  Select Case ParityMark
    Case 0
      txtAnswer.Text = xorStrValue(txtClientHex.Text)
    Case 1
      txtAnswer.Text = addStrValue(txtClientHex.Text)
    Case 2
      Dim strTmp As String
      strTmp = Trim(txtAnswer.Text)
      If Len(strTmp) < 4 Then
        strTmp = "FFFF"
      Else
        strTmp = Mid(strTmp, 1, 4)
      End If
      txtAnswer.Text = crcStrValue(strTmp, txtClientHex.Text)
    Case 3
      txtAnswer.Text = addStrBCSValue(txtClientHex.Text)
    Case 4
      txtAnswer.Text = Len(Trim(txtClientHex.Text)) / 2
  End Select
End Sub

Private Sub cmdClear_Click()
  txtClientHex.Text = ""
  txtAnswer.Text = ""
End Sub

Private Sub Form_Load()
  'Call SetForm(Me, 500, 700)
  SetWindowPos frmParity.hWnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE Or SWP_NOSIZE
  txtAnswer.Text = ""
  txtClientHex.Text = ""
  ParityMark = 0
  optParity(0).Value = True
End Sub

Private Sub optParity_Click(Index As Integer)
  ParityMark = Index
End Sub

Private Sub cmdQuit_Click()
  Unload Me
End Sub