VERSION 5.00
Begin VB.Form frmAbout 
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "關(guān)于電機(jī)驅(qū)動(dòng)監(jiān)控程序"
   ClientHeight    =   2715
   ClientLeft      =   2340
   ClientTop       =   1935
   ClientWidth     =   5730
   ClipControls    =   0   'False
   ControlBox      =   0   'False
   LinkTopic       =   "Form2"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   1873.941
   ScaleMode       =   0  'User
   ScaleWidth      =   5380.766
   ShowInTaskbar   =   0   'False
   StartUpPosition =   2  '屏幕中心
   Begin VB.PictureBox picIcon 
      AutoSize        =   -1  'True
      ClipControls    =   0   'False
      Height          =   540
      Left            =   240
      Picture         =   "frmAbout.frx":0000
      ScaleHeight     =   337.12
      ScaleMode       =   0  'User
      ScaleWidth      =   337.12
      TabIndex        =   1
      Top             =   240
      Width           =   540
   End
   Begin VB.CommandButton cmdOK 
      Cancel          =   -1  'True
      Caption         =   "確定"
      Default         =   -1  'True
      Height          =   345
      Left            =   4125
      TabIndex        =   0
      Top             =   1800
      Width           =   1500
   End
   Begin VB.CommandButton cmdSysInfo 
      Caption         =   "系統(tǒng)信息(&S)..."
      Height          =   345
      Left            =   4140
      TabIndex        =   2
      Top             =   2280
      Width           =   1485
   End
   Begin VB.Line Line1 
      BorderColor     =   &H00808080&
      BorderStyle     =   6  'Inside Solid
      Index           =   1
      X1              =   84.515
      X2              =   5309.398
      Y1              =   1076.74
      Y2              =   1076.74
   End
   Begin VB.Label lblDescription 
      Caption         =   "應(yīng)用程序描述： 通過(guò)PC串口監(jiān)控電機(jī)驅(qū)動(dòng)系統(tǒng)，發(fā)送控制命令，接收驅(qū)動(dòng)系統(tǒng)返回參數(shù)。"
      ForeColor       =   &H00000000&
      Height          =   450
      Left            =   1050
      TabIndex        =   3
      Top             =   1125
      Width           =   3885
   End
   Begin VB.Label lblTitle 
      Caption         =   "電機(jī)驅(qū)動(dòng)監(jiān)控程序"
      ForeColor       =   &H00000000&
      Height          =   480
      Left            =   1080
      TabIndex        =   5
      Top             =   240
      Width           =   3885
   End
   Begin VB.Line Line1 
      BorderColor     =   &H00FFFFFF&
      BorderWidth     =   2
      Index           =   0
      X1              =   98.6
      X2              =   5309.398
      Y1              =   1076.74
      Y2              =   1076.74
   End
   Begin VB.Label lblVersion 
      Caption         =   "版本：1.1"
      Height          =   225
      Left            =   1050
      TabIndex        =   6
      Top             =   780
      Width           =   3885
   End
   Begin VB.Label lblDisclaimer 
      Caption         =   "警告: ...：）"
      ForeColor       =   &H00000000&
      Height          =   825
      Left            =   240
      TabIndex        =   4
      Top             =   1800
      Width           =   3630
   End
End
Attribute VB_Name = "frmAbout"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit

' 注冊(cè)表關(guān)鍵字安全選項(xiàng)...
Const READ_CONTROL = &H20000
Const KEY_QUERY_VALUE = &H1
Const KEY_SET_VALUE = &H2
Const KEY_CREATE_SUB_KEY = &H4
Const KEY_ENUMERATE_SUB_KEYS = &H8
Const KEY_NOTIFY = &H10
Const KEY_CREATE_LINK = &H20
Const KEY_ALL_ACCESS = KEY_QUERY_VALUE + KEY_SET_VALUE + _
                       KEY_CREATE_SUB_KEY + KEY_ENUMERATE_SUB_KEYS + _
                       KEY_NOTIFY + KEY_CREATE_LINK + READ_CONTROL
                     
' 注冊(cè)表關(guān)鍵字 ROOT 類(lèi)型...
Const HKEY_LOCAL_MACHINE = &H80000002
Const ERROR_SUCCESS = 0
Const REG_SZ = 1                         ' 獨(dú)立的空的終結(jié)字符串
Const REG_DWORD = 4                      ' 32位數(shù)字

Const gREGKEYSYSINFOLOC = "SOFTWARE\Microsoft\Shared Tools Location"
Const gREGVALSYSINFOLOC = "MSINFO"
Const gREGKEYSYSINFO = "SOFTWARE\Microsoft\Shared Tools\MSINFO"
Const gREGVALSYSINFO = "PATH"

Private Declare Function RegOpenKeyEx Lib "advapi32" Alias "RegOpenKeyExA" (ByVal hKey As Long, ByVal lpSubKey As String, ByVal ulOptions As Long, ByVal samDesired As Long, ByRef phkResult As Long) As Long
Private Declare Function RegQueryValueEx Lib "advapi32" Alias "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal lpReserved As Long, ByRef lpType As Long, ByVal lpData As String, ByRef lpcbData As Long) As Long
Private Declare Function RegCloseKey Lib "advapi32" (ByVal hKey As Long) As Long


Private Sub cmdSysInfo_Click()
  Call StartSysInfo
End Sub

Private Sub cmdOK_Click()
  Unload Me
End Sub

Private Sub Form_Load()
   ' Me.Caption = "關(guān)于 " & App.Title
    lblVersion.Caption = "版本 " & App.Major & "." & App.Minor & "." & App.Revision
   ' lblTitle.Caption = App.Title
End Sub

Public Sub StartSysInfo()
    On Error GoTo SysInfoErr
  
    Dim rc As Long
    Dim SysInfoPath As String
    
    ' 試圖從注冊(cè)表中獲得系統(tǒng)信息程序的路徑及名稱(chēng)...
    If GetKeyValue(HKEY_LOCAL_MACHINE, gREGKEYSYSINFO, gREGVALSYSINFO, SysInfoPath) Then
    ' 試圖僅從注冊(cè)表中獲得系統(tǒng)信息程序的路徑...
    ElseIf GetKeyValue(HKEY_LOCAL_MACHINE, gREGKEYSYSINFOLOC, gREGVALSYSINFOLOC, SysInfoPath) Then
        ' 已知32位文件版本的有效位置
        If (Dir(SysInfoPath & "\MSINFO32.EXE") <> "") Then
            SysInfoPath = SysInfoPath & "\MSINFO32.EXE"
            
        ' 錯(cuò)誤 - 文件不能被找到...
        Else
            GoTo SysInfoErr
        End If
    ' 錯(cuò)誤 - 注冊(cè)表相應(yīng)條目不能被找到...
    Else
        GoTo SysInfoErr
    End If
    
    Call Shell(SysInfoPath, vbNormalFocus)
    
    Exit Sub
SysInfoErr:
    MsgBox "此時(shí)系統(tǒng)信息不可用", vbOKOnly
End Sub

Public Function GetKeyValue(KeyRoot As Long, KeyName As String, SubKeyRef As String, ByRef KeyVal As String) As Boolean
    Dim i As Long                                           ' 循環(huán)計(jì)數(shù)器
    Dim rc As Long                                          ' 返回代碼
    Dim hKey As Long                                        ' 打開(kāi)的注冊(cè)表關(guān)鍵字句柄
    Dim hDepth As Long                                      '
    Dim KeyValType As Long                                  ' 注冊(cè)表關(guān)鍵字?jǐn)?shù)據(jù)類(lèi)型
    Dim tmpVal As String                                    ' 注冊(cè)表關(guān)鍵字值的臨時(shí)存儲(chǔ)器
    Dim KeyValSize As Long                                  ' 注冊(cè)表關(guān)鍵自變量的尺寸
    '------------------------------------------------------------
    ' 打開(kāi) {HKEY_LOCAL_MACHINE...} 下的 RegKey
    '------------------------------------------------------------
    rc = RegOpenKeyEx(KeyRoot, KeyName, 0, KEY_ALL_ACCESS, hKey) ' 打開(kāi)注冊(cè)表關(guān)鍵字
    
    If (rc <> ERROR_SUCCESS) Then GoTo GetKeyError          ' 處理錯(cuò)誤...
    
    tmpVal = String$(1024, 0)                             ' 分配變量空間
    KeyValSize = 1024                                       ' 標(biāo)記變量尺寸
    
    '------------------------------------------------------------
    ' 檢索注冊(cè)表關(guān)鍵字的值...
    '------------------------------------------------------------
    rc = RegQueryValueEx(hKey, SubKeyRef, 0, _
                         KeyValType, tmpVal, KeyValSize)    ' 獲得/創(chuàng)建關(guān)鍵字值
                        
    If (rc <> ERROR_SUCCESS) Then GoTo GetKeyError          ' 處理錯(cuò)誤
    
    If (Asc(Mid(tmpVal, KeyValSize, 1)) = 0) Then           ' Win95 外接程序空終結(jié)字符串...
        tmpVal = Left(tmpVal, KeyValSize - 1)               ' Null 被找到,從字符串中分離出來(lái)
    Else                                                    ' WinNT 沒(méi)有空終結(jié)字符串...
        tmpVal = Left(tmpVal, KeyValSize)                   ' Null 沒(méi)有被找到, 分離字符串
    End If
    '------------------------------------------------------------
    ' 決定轉(zhuǎn)換的關(guān)鍵字的值類(lèi)型...
    '------------------------------------------------------------
    Select Case KeyValType                                  ' 搜索數(shù)據(jù)類(lèi)型...
    Case REG_SZ                                             ' 字符串注冊(cè)關(guān)鍵字?jǐn)?shù)據(jù)類(lèi)型
        KeyVal = tmpVal                                     ' 復(fù)制字符串的值
    Case REG_DWORD                                          ' 四字節(jié)的注冊(cè)表關(guān)鍵字?jǐn)?shù)據(jù)類(lèi)型
        For i = Len(tmpVal) To 1 Step -1                    ' 將每位進(jìn)行轉(zhuǎn)換
            KeyVal = KeyVal + Hex(Asc(Mid(tmpVal, i, 1)))   ' 生成值字符。 By Char。
        Next
        KeyVal = Format$("&h" + KeyVal)                     ' 轉(zhuǎn)換四字節(jié)的字符為字符串
    End Select
    
    GetKeyValue = True                                      ' 返回成功
    rc = RegCloseKey(hKey)                                  ' 關(guān)閉注冊(cè)表關(guān)鍵字
    Exit Function                                           ' 退出
    
GetKeyError:      ' 錯(cuò)誤發(fā)生后將其清除...
    KeyVal = ""                                             ' 設(shè)置返回值到空字符串
    GetKeyValue = False                                     ' 返回失敗
    rc = RegCloseKey(hKey)                                  ' 關(guān)閉注冊(cè)表關(guān)鍵字
End Function