关于.frm

来自「基于VB+SQL Server的零食销售管理系统设计」· FRM 代码 · 共 265 行

VERSION 5.00
Begin VB.Form 关于我们 
   BorderStyle     =   3  'Fixed Dialog
   Caption         =   "关于我的应用程序"
   ClientHeight    =   5655
   ClientLeft      =   4545
   ClientTop       =   2430
   ClientWidth     =   7320
   ClipControls    =   0   'False
   LinkTopic       =   "Form2"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   Picture         =   "关于.frx":0000
   ScaleHeight     =   3903.182
   ScaleMode       =   0  'User
   ScaleWidth      =   6873.858
   ShowInTaskbar   =   0   'False
   Begin VB.PictureBox picIcon 
      AutoSize        =   -1  'True
      ClipControls    =   0   'False
      Height          =   540
      Left            =   240
      Picture         =   "关于.frx":3633
      ScaleHeight     =   337.12
      ScaleMode       =   0  'User
      ScaleWidth      =   337.12
      TabIndex        =   1
      Top             =   240
      Width           =   540
   End
   Begin VB.CommandButton cmdOK 
      Cancel          =   -1  'True
      Caption         =   "确定"
      Default         =   -1  'True
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   15
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   585
      Left            =   4680
      TabIndex        =   0
      Top             =   3360
      Width           =   1500
   End
   Begin VB.Line Line1 
      BorderColor     =   &H00808080&
      BorderStyle     =   6  'Inside Solid
      Index           =   1
      X1              =   112.686
      X2              =   5337.569
      Y1              =   1987.827
      Y2              =   1987.827
   End
   Begin VB.Label lblDescription 
      Caption         =   "主要功能：系统管理功能，客户信息管理功能，商品管理功能，营销信息管理功能"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   15
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00008080&
      Height          =   1170
      Left            =   1080
      TabIndex        =   2
      Top             =   1440
      Width           =   3885
   End
   Begin VB.Label lblTitle 
      Caption         =   "零食销售管理系统"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   15.75
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00004080&
      Height          =   480
      Left            =   1080
      TabIndex        =   4
      Top             =   240
      Width           =   3885
   End
   Begin VB.Label lblVersion 
      Caption         =   "1.0版"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   15.75
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00008080&
      Height          =   345
      Left            =   1080
      TabIndex        =   5
      Top             =   720
      Width           =   3885
   End
   Begin VB.Label lblDisclaimer 
      Caption         =   "警告:请使用正版应用程序！"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   15
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00004080&
      Height          =   435
      Left            =   240
      TabIndex        =   3
      Top             =   3360
      Width           =   3975
   End
End
Attribute VB_Name = "关于我们"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit

' 注册表关键字安全选项...
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
                     
' 注册表关键字 ROOT 类型...
Const HKEY_LOCAL_MACHINE = &H80000002
Const ERROR_SUCCESS = 0
Const REG_SZ = 1                         ' 独立的空的终结字符串
Const REG_DWORD = 4                      ' 32位数字

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
  系统主页.Show
End Sub

Private Sub Form_Load()
    Me.Caption = "关于 " & 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
    
    ' 试图从注册表中获得系统信息程序的路径及名称...
    If GetKeyValue(HKEY_LOCAL_MACHINE, gREGKEYSYSINFO, gREGVALSYSINFO, SysInfoPath) Then
    ' 试图仅从注册表中获得系统信息程序的路径...
    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"
            
        ' 错误 - 文件不能被找到...
        Else
            GoTo SysInfoErr
        End If
    ' 错误 - 注册表相应条目不能被找到...
    Else
        GoTo SysInfoErr
    End If
    
    Call Shell(SysInfoPath, vbNormalFocus)
    
    Exit Sub
SysInfoErr:
    MsgBox "此时系统信息不可用", 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                                           ' 循环计数器
    Dim rc As Long                                          ' 返回代码
    Dim hKey As Long                                        ' 打开的注册表关键字句柄
    Dim hDepth As Long                                      '
    Dim KeyValType As Long                                  ' 注册表关键字数据类型
    Dim tmpVal As String                                    ' 注册表关键字值的临时存储器
    Dim KeyValSize As Long                                  ' 注册表关键自变量的尺寸
    '------------------------------------------------------------
    ' 打开 {HKEY_LOCAL_MACHINE...} 下的 RegKey
    '------------------------------------------------------------
    rc = RegOpenKeyEx(KeyRoot, KeyName, 0, KEY_ALL_ACCESS, hKey) ' 打开注册表关键字
    
    If (rc <> ERROR_SUCCESS) Then GoTo GetKeyError          ' 处理错误...
    
    tmpVal = String$(1024, 0)                             ' 分配变量空间
    KeyValSize = 1024                                       ' 标记变量尺寸
    
    '------------------------------------------------------------
    ' 检索注册表关键字的值...
    '------------------------------------------------------------
    rc = RegQueryValueEx(hKey, SubKeyRef, 0, _
                         KeyValType, tmpVal, KeyValSize)    ' 获得/创建关键字值
                        
    If (rc <> ERROR_SUCCESS) Then GoTo GetKeyError          ' 处理错误
    
    If (Asc(Mid(tmpVal, KeyValSize, 1)) = 0) Then           ' Win95 外接程序空终结字符串...
        tmpVal = Left(tmpVal, KeyValSize - 1)               ' Null 被找到,从字符串中分离出来
    Else                                                    ' WinNT 没有空终结字符串...
        tmpVal = Left(tmpVal, KeyValSize)                   ' Null 没有被找到, 分离字符串
    End If
    '------------------------------------------------------------
    ' 决定转换的关键字的值类型...
    '------------------------------------------------------------
    Select Case KeyValType                                  ' 搜索数据类型...
    Case REG_SZ                                             ' 字符串注册关键字数据类型
        KeyVal = tmpVal                                     ' 复制字符串的值
    Case REG_DWORD                                          ' 四字节的注册表关键字数据类型
        For i = Len(tmpVal) To 1 Step -1                    ' 将每位进行转换
            KeyVal = KeyVal + Hex(Asc(Mid(tmpVal, i, 1)))   ' 生成值字符。 By Char。
        Next
        KeyVal = Format$("&h" + KeyVal)                     ' 转换四字节的字符为字符串
    End Select
    
    GetKeyValue = True                                      ' 返回成功
    rc = RegCloseKey(hKey)                                  ' 关闭注册表关键字
    Exit Function                                           ' 退出
    
GetKeyError:      ' 错误发生后将其清除...
    KeyVal = ""                                             ' 设置返回值到空字符串
    GetKeyValue = False                                     ' 返回失败
    rc = RegCloseKey(hKey)                                  ' 关闭注册表关键字
End Function