redkeyval.bas

适合乡镇供电所使用电费处理系统v3 软件

Attribute VB_Name = "RedKeyVal"
Option Explicit

Public RetuVal As String
' 注册键安全选项...

Public Const KEY_ALL_ACCESS = &H2003F
                                          

' 注册键根类型...
Public Const HKEY_LOCAL_MACHINE = &H80000002
Public Const ERROR_SUCCESS = 0
Public Const REG_SZ = 1                         ' Unicode 空结尾字符串
Public Const REG_DWORD = 4                      ' 32位数


Public Const gREGKEYSYSINFOLOC = "SOFTWARE\Microsoft\Shared Tools Location"
Public Const GR = "Software\杭州华杭电子电器公司\ND2000电费处理系统\1.00"
Public Const gRegUserName = "用户名"
Public Const gRegEcName = "组织名称"
Public Const gRegCode = "注册码"

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


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
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
Declare Function RegCloseKey Lib "advapi32" (ByVal hKey As Long) As Long

Public Function GetKeyValue(KeyRoot As Long, KeyName As String, SubKeyRef As String, ByRef KeyVal As String) As Boolean
        Dim i As Long                                           ' 循环记数器
        Dim rc As Long                                          ' 返回代码
        Dim hKey As Long                                        ' 打开的注册表键句柄
        Dim hDepth As Long                                      '
        Dim KeyValType As Long                                  ' 注册表键数据类型
        Dim tmpVal As String                                    ' 临时存储一个注册表键值
        Dim KeyValSize As Long                                  ' 注册表键变量大小
        '------------------------------------------------------------
        ' 在键根{HKEY_LOCAL_MACHINE...}之下打开注册键
        '------------------------------------------------------------
        rc = RegOpenKeyEx(KeyRoot, KeyName, 0, KEY_ALL_ACCESS, hKey) ' 打开注册表键
        

        If (rc <> ERROR_SUCCESS) Then GoTo GetKeyError          ' 错误处理...
        

        tmpVal = String$(1024, 0)                             ' 分配变量空间
        KeyValSize = 1024                                       ' 标记变量大小
        

        '------------------------------------------------------------
        ' 检索注册表键值...
        '------------------------------------------------------------
        rc = RegQueryValueEx(hKey, SubKeyRef, 0, KeyValType, tmpVal, KeyValSize)    ' 获得/创建键值
                                                

        If (rc <> ERROR_SUCCESS) Then GoTo GetKeyError          ' 错误处理
      

        'vbe:34126
          tmpVal = Left(tmpVal, InStr(tmpVal, Chr(0)) - 1)


        '------------------------------------------------------------
        ' 决定转换的键值类型...
        '------------------------------------------------------------
        Select Case KeyValType                                  ' 搜索数据类型...
        Case REG_SZ                                             ' 字符串注册表键数据类型
                KeyVal = tmpVal                                     ' 复制字符串值
        Case REG_DWORD                                          ' 双精度注册表键数据类型
                For i = Len(tmpVal) To 1 Step -1                    ' 转换每一页
                        KeyVal = KeyVal + Hex(Asc(Mid(tmpVal, i, 1)))   ' 一个字符一个字符地生成值
                Next
                KeyVal = Format$("&h" + KeyVal)                     ' 转换双精度为字符串
        End Select
        

        GetKeyValue = True                                      ' 返回成功
        rc = RegCloseKey(hKey)                                  ' 关闭注册表键
        RetuVal = tmpVal
      '  GetKeyValue = KeyVal
        Exit Function                                           ' 退出
        

GetKeyError:    ' Cleanup After An Error Has Occured...
        KeyVal = ""                                             ' 设返回值为空字符串
        GetKeyValue = False                                     ' 返回失败
        rc = RegCloseKey(hKey)                                  ' 关闭注册表键
End Function