VERSION 5.00
Begin VB.Form frmAbout 
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "關于 MyApp"
   ClientHeight    =   3555
   ClientLeft      =   2340
   ClientTop       =   1935
   ClientWidth     =   5730
   ClipControls    =   0   'False
   LinkTopic       =   "Form2"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   2453.724
   ScaleMode       =   0  'User
   ScaleWidth      =   5380.766
   ShowInTaskbar   =   0   'False
   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             =   2625
      Width           =   1500
   End
   Begin VB.CommandButton cmdSysInfo 
      Caption         =   "系統信息(&S)..."
      Height          =   345
      Left            =   4140
      TabIndex        =   2
      Top             =   3075
      Width           =   1485
   End
   Begin VB.Line Line1 
      BorderColor     =   &H00808080&
      BorderStyle     =   6  'Inside Solid
      Index           =   1
      X1              =   84.515
      X2              =   5309.398
      Y1              =   1687.583
      Y2              =   1687.583
   End
   Begin VB.Label lblDescription 
      Caption         =   $"frmAbout.frx":030A
      BeginProperty Font 
         Name            =   "宋體"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00000000&
      Height          =   1170
      Left            =   780
      TabIndex        =   3
      Top             =   1125
      Width           =   4425
   End
   Begin VB.Label lblTitle 
      Caption         =   "事業單位通用工資管理系統"
      BeginProperty Font 
         Name            =   "黑體"
         Size            =   14.25
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00000000&
      Height          =   300
      Left            =   1320
      TabIndex        =   5
      Top             =   150
      Width           =   3465
   End
   Begin VB.Line Line1 
      BorderColor     =   &H00FFFFFF&
      BorderWidth     =   2
      Index           =   0
      X1              =   98.6
      X2              =   5309.398
      Y1              =   1697.936
      Y2              =   1697.936
   End
   Begin VB.Label lblVersion 
      Caption         =   "（中行版）1.0版"
      Height          =   285
      Left            =   2250
      TabIndex        =   6
      Top             =   630
      Width           =   1515
   End
   Begin VB.Label lblDisclaimer 
      Caption         =   "    警告：本系統所有程序及算法受版權法與國際版權公約保護，任意未授權的單位不得復制本系統，違反者將追究一切法律責任！"
      BeginProperty Font 
         Name            =   "宋體"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00000000&
      Height          =   885
      Left            =   255
      TabIndex        =   4
      Top             =   2625
      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

' 注冊鍵安全選項...
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
                     
' 注冊鍵 ROOT 類型...
Const HKEY_LOCAL_MACHINE = &H80000002
Const ERROR_SUCCESS = 0
Const REG_SZ = 1                         ' Unicode 以 Null 結尾的字符串
Const REG_DWORD = 4                      ' 32-位數字

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
    
    ' 試圖從注冊表得到系統信息程序路徑\名稱...
    If GetKeyValue(HKEY_LOCAL_MACHINE, gREGKEYSYSINFO, gREGVALSYSINFO, SysInfoPath) Then
    ' 試圖從注冊表得到系統信息程序路徑...
    ElseIf GetKeyValue(HKEY_LOCAL_MACHINE, gREGKEYSYSINFOLOC, gREGVALSYSINFOLOC, SysInfoPath) Then
        ' 驗證已知 32 位文件版本的存在
        If (Dir(SysInfoPath & "\MSINFO32.EXE") <> "") Then
            SysInfoPath = SysInfoPath & "\MSINFO32.EXE"
            
        ' 錯誤 - 文件未找到...
        Else
            GoTo SysInfoErr
        End If
    ' 錯誤 - 注冊項未找到...
    Else
        GoTo SysInfoErr
    End If
    
    Call Shell(SysInfoPath, vbNormalFocus)
    
    Exit Sub
SysInfoErr:
    MsgBox "此時系統信息無效", 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                                           ' 循環指針
    Dim rc As Long                                          ' 返回代碼
    Dim hKey As Long                                        ' 打開的注冊鍵的句柄
    Dim hDepth As Long                                      '
    Dim KeyValType As Long                                  ' 注冊鍵的數據類型
    Dim tmpVal As String                                    ' 注冊鍵的臨時存儲區
    Dim KeyValSize As Long                                  ' 注冊鍵變量的大小
    '------------------------------------------------------------
    ' 在根鍵 {HKEY_LOCAL_MACHINE...} 下打開注冊鍵
    '------------------------------------------------------------
    rc = RegOpenKeyEx(KeyRoot, KeyName, 0, KEY_ALL_ACCESS, hKey) ' 打開注冊鍵
    
    If (rc <> ERROR_SUCCESS) Then GoTo GetKeyError          ' 句柄錯誤...
    
    tmpVal = String$(1024, 0)                             ' 分配變量空間
    KeyValSize = 1024                                       ' 標記變量大小
    
    '------------------------------------------------------------
    ' 檢索注冊鍵值...
    '------------------------------------------------------------
    rc = RegQueryValueEx(hKey, SubKeyRef, 0, _
                         KeyValType, tmpVal, KeyValSize)    ' 獲得/創建鍵值
                        
    If (rc <> ERROR_SUCCESS) Then GoTo GetKeyError          ' 句柄錯誤
    
    If (Asc(Mid(tmpVal, KeyValSize, 1)) = 0) Then           ' Win95 添加以 Null 結尾的字符串...
        tmpVal = Left(tmpVal, KeyValSize - 1)               ' Null 找到，從字符串提取
    Else                                                    ' WinNT 不需要以 Null 結束字符串...
        tmpVal = Left(tmpVal, KeyValSize)                   ' Null 未找到， 僅提取字符串
    End If
    '------------------------------------------------------------
    ' 為了轉換而決定鍵值類型..
    '------------------------------------------------------------
    Select Case KeyValType                                  ' 搜索數據類型...
    Case REG_SZ                                             ' 字符串型注冊鍵數據類型
        KeyVal = tmpVal                                     ' 復制字符串值
    Case REG_DWORD                                          ' 雙字型注冊鍵數據類型
        For i = Len(tmpVal) To 1 Step -1                    ' 轉換每一位
            KeyVal = KeyVal + Hex(Asc(Mid(tmpVal, i, 1)))   ' 一個字符一個字符地建立值
        Next
        KeyVal = Format$("&h" + KeyVal)                     ' 轉換雙字型為字符串型
    End Select
    
    GetKeyValue = True                                      ' 返回成功
    rc = RegCloseKey(hKey)                                  ' 關閉注冊鍵
    Exit Function                                           ' 退出
    
GetKeyError:      ' 發生錯誤后清除...
    KeyVal = ""                                             ' 設置返回值為空字符串
    GetKeyValue = False                                     ' 返回失敗
    rc = RegCloseKey(hKey)                                  ' 關閉注冊鍵
End Function