frmabout.frm

这是基于MapX4.0的房屋测绘管理信息系统

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()

    Dim tTempStr            As String
    
    'Me.Caption = "关于 " & App.Title
    'lblVersion.Caption = "版本 " & App.Major & "." & App.Minor & "." & App.Revision
    'lblTitle.Caption = App.Title
        
    ' Get the user name
    tTempStr = GetRegString(HKEY_LOCAL_MACHINE, _
            "SOFTWARE\Microsoft\Windows\CurrentVersion", _
            "RegisteredOwner")
    If Len(tTempStr) <> 0 Then
        lblUserInfo.Caption = vbCrLf & "  " & tTempStr & vbCrLf & vbCrLf
      Else
        lblUserInfo.Caption = "No user name available" & vbCrLf & vbCrLf
    End If
    
    ' Get the company name
    tTempStr = GetRegString(HKEY_LOCAL_MACHINE, _
            "SOFTWARE\Microsoft\Windows\CurrentVersion", _
            "RegisteredOrganization")
    If Len(tTempStr) <> 0 Then
        lblUserInfo.Caption = lblUserInfo.Caption & "  " & tTempStr
    End If
    
    ''''
    Label2.Top = picIcon.ScaleHeight
    Label3.Top = Label2.Top + Label2.Height
    Label4.Top = Label3.Top + Label3.Height
    Label5.Caption = CUSTOMCOMPANYNAME
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

Private Sub Image1_Click()

End Sub

Private Function GetRegString(lRegRoot As Long, _
                 sRegKey As String, _
                 sSubKey As String) As String

Dim hRegKey             As Long
Dim lResult             As Long
Dim lValueSize          As Long
Dim lValueType          As Long
Dim tTempStr            As String

Const REG_SZ = 1

GetRegString = ""

' Open the registry key we want to check
lResult = RegOpenKeyEx(lRegRoot, _
            sRegKey, _
            0&, _
            KEY_QUERY_VALUE, _
            hRegKey)
            
' Make sure we did not get an error
If lResult = API_SUCCESS Then
    ' Get the length of the value string
    lResult = RegQueryValueEx(hRegKey, _
            sSubKey, _
            0&, _
            lValueType, _
            ByVal 0&, _
            lValueSize)
            
    ' Make sure it is a string value type
    If lValueType = REG_SZ Then
        ' Initialize the variable to hold the string
        tTempStr = String(lValueSize, " ")
        ' Get the value from the registry
        lResult = RegQueryValueEx(hRegKey, _
            sSubKey, _
            0&, 0&, _
            ByVal tTempStr, _
            lValueSize)
            
        If lResult = API_SUCCESS Then
            GetRegString = Left$(tTempStr, _
                    InStr(tTempStr, vbNullChar) - 1)
        End If
    End If
    ' Close the registry key
    lResult = RegCloseKey(hRegKey)
End If

End Function

Private Sub picIcon_DblClick()
    Static flag As Boolean
    If flag Then
        Timer1.Enabled = False
        Label2.Top = picIcon.ScaleHeight
        Label3.Top = Label2.Top + Label2.Height
        Label4.Top = Label3.Top + Label3.Height
        flag = False
    Else
        Timer1.Enabled = True
        flag = True
    End If

End Sub

Private Sub Timer1_Timer()
    Const iStep As Integer = 1
    Label2.Top = Label2.Top - iStep
    Label3.Top = Label3.Top - iStep
    Label4.Top = Label4.Top - iStep
    
    If (Label4.Top + Label4.Height) < 0 Then
        Label2.Top = picIcon.ScaleHeight
        Label3.Top = Label2.Top + Label2.Height
        Label4.Top = Label3.Top + Label3.Height
    End If
End Sub