[求助]：vb6.0中能否通过API查询到注册表中某个键下子键的名称？

dyheng

我想通过查询注册表中Autodesk\AutoCAD键下子键的名称来判断AutoCAD的版本，同时再通过查询R16.1(本人的是2005)键下ACAD-301:804子键的Location项得到AutoCAD的安装路径，但是API中好象没有查询子键名称的函数，是我学得不够还是就没有这个函数？
主要是想通过修改C:\Program Files\AutoCAD 2005\Support目录下auto2005.lsp文件达到运行AutoCAD就能运行自己的VBA文件的目的？也就是主要解决VBA程序分发给别人，自己用vb6.0做一个相当于安装程序的小程序。
（以上注册表键名及文件路径只是本人机器上的，因版本和个人而异）

雪山飞狐(lzh)

很早以前下载的，没用过，你先试试吧：）

2. 
   
3. Option Explicit
   
4. ' 这个模块用于读和写注册表关键字。
   
5. ' 不同于VB 的内部注册表访问方法，它可以
   
6. ' 通过字符串的值来读和写任何注册表关键字。
   
7. '---------------------------------------------------------------
   
8. '-注册表 API 声明...
   
9. 'RegCloseKey 用于关闭系统注册表中的一个项（或键）
   
10. 'RegCreateKeyEx用于创建注册表项
    
11. 'RegOpenKeyEx用于打开注册表项
    
12. 'RegQueryValueEx 用于获取一个项的设置值
    
13. 'RegSetValueEx 用于设置指定项的值
    
14. '---------------------------------------------------------------
    
15. Public Declare Function RegCloseKey Lib "advapi32" (ByVal hkey As Long) As Long
    
16. Public Declare Function RegCreateKeyEx Lib "advapi32" Alias "RegCreateKeyExA" (ByVal hkey As Long, ByVal lpSubKey As String, ByVal Reserved As Long, ByVal lpClass As String, ByVal dwOptions As Long, ByVal samDesired As Long, ByRef lpSecurityAttributes As SECURITY_ATTRIBUTES, ByRef phkResult As Long, ByRef lpdwDisposition As Long) As Long
    
17. Public 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
    
18. Public 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
    
19. Public Declare Function RegSetValueEx Lib "advapi32" Alias "RegSetValueExA" (ByVal hkey As Long, ByVal lpValueName As String, ByVal Reserved As Long, ByVal dwType As Long, ByVal lpData As String, ByVal cbData As Long) As Long
    
20. '---------------------------------------------------------------
    
21. '- 注册表 Api 常数...
    
22. '---------------------------------------------------------------
    
23. ' Reg Data Types...
    
24. Public Const REG_SZ = 1 ' Unicode空终结字符串
    
25. Public Const REG_EXPAND_SZ = 2 ' Unicode空终结字符串
    
26. Public Const REG_DWORD = 4 ' 32-bit 数字
    
27. Public Const REG_BINARY = 3
    
28. ' 注册表创建类型值...
    
29. Public Const REG_OPTION_NON_VOLATILE = 0 ' 当系统重新启动时，关键字被保留
    
30. ' 注册表关键字安全选项...
    
31. Public Const READ_CONTROL = &H20000
    
32. Public Const KEY_QUERY_VALUE = &H1
    
33. Public Const KEY_SET_VALUE = &H2
    
34. Public Const KEY_CREATE_SUB_KEY = &H4
    
35. Public Const KEY_ENUMERATE_SUB_KEYS = &H8
    
36. Public Const KEY_NOTIFY = &H10
    
37. Public Const KEY_CREATE_LINK = &H20
    
38. Public Const KEY_READ = KEY_QUERY_VALUE + KEY_ENUMERATE_SUB_KEYS + KEY_NOTIFY + READ_CONTROL
    
39. Public Const KEY_WRITE = KEY_SET_VALUE + KEY_CREATE_SUB_KEY + READ_CONTROL
    
40. Public Const KEY_EXECUTE = KEY_READ
    
41. Public Const KEY_ALL_ACCESS = KEY_QUERY_VALUE + KEY_SET_VALUE + _
    
42. KEY_CREATE_SUB_KEY + KEY_ENUMERATE_SUB_KEYS + _
    
43. KEY_NOTIFY + KEY_CREATE_LINK + READ_CONTROL
    
44. 
    
45. ' 注册表关键字根类型...
    
46. Public Const HKEY_CLASSES_ROOT = &H80000000
    
47. Public Const HKEY_CURRENT_USER = &H80000001
    
48. Public Const HKEY_LOCAL_MACHINE = &H80000002
    
49. Public Const HKEY_USERS = &H80000003
    
50. Public Const HKEY_PERFORMANCE_DATA = &H80000004
    
51. 
    
52. ' 返回值...
    
53. Public Const ERROR_NONE = 0
    
54. Public Const ERROR_BADKEY = 2
    
55. Public Const ERROR_ACCESS_DENIED = 8
    
56. Public Const ERROR_SUCCESS = 0
    
57. 
    
58. '---------------------------------------------------------------
    
59. '- 注册表安全属性类型...
    
60. '---------------------------------------------------------------
    
61. Private Type SECURITY_ATTRIBUTES
    
62. nLength As Long
    
63. lpSecurityDescriptor As Long
    
64. bInheritHandle As Boolean
    
65. End Type
    
66. '-------------------------------------------------------------------------------------------------
    
67. '本函数在注册表中创建新的项及键值
    
68. 'sample usage - Debug.Print UpodateKey(HKEY_CLASSES_ROOT, "keyname", "newvalue")
    
69. '-------------------------------------------------------------------------------------------------
    
70. Public Function UpdateKey(KeyRoot As Long, KeyName As String, SubKeyName As String, SubReg As Long, SubKeyValue As String, IngNumber As Long) As Long
    
71.     Dim RC As Long ' 返回代码
    
72.     Dim hkey As Long ' 处理一个注册表关键字
    
73.     Dim hDepth As Long '
    
74.     Dim lpAttr As SECURITY_ATTRIBUTES ' 注册表安全类型
    
75.    
    
76.     lpAttr.nLength = 50 ' 设置安全属性为缺省值...
    
77.     lpAttr.lpSecurityDescriptor = 0 ' ...
    
78.     lpAttr.bInheritHandle = True ' ...
    
79.    
    
80.     '------------------------------------------------------------
    
81.     '- 创建/打开注册表关键字...
    
82.     '创建/打开//KeyRoot//KeyName
    
83.     ' 错误处理...
    
84.     '------------------------------------------------------------
    
85.     RC = RegCreateKeyEx(KeyRoot, KeyName, 0, "", 0, KEY_WRITE, lpAttr, hkey, hDepth)
    
86.     If (RC <> ERROR_SUCCESS) Then GoTo CreateKeyError
    
87.    
    
88.     '------------------------------------------------------------
    
89.     '- 创建/修改关键字值...
    
90.     ' 要让RegSetValueEx() 工作需要输入一个空格...
    
91.     ' 创建/修改关键字值
    
92.     '- 关闭注册表关键字...
    
93.     '------------------------------------------------------------
    
94.     Select Case SubReg
    
95.     Case REG_SZ
    
96.         RC = RegSetValueEx(hkey, SubKeyName, 0, SubReg, SubKeyValue, IngNumber)
    
97.         If (RC <> ERROR_SUCCESS) Then GoTo CreateKeyError
    
98.     End Select
    
99.     RC = RegCloseKey(hkey) ' 退出
    
100.     Exit Function ' 错误处理
     
101. CreateKeyError:
     
102.     UpdateKey = False ' 设置错误返回代码
     
103.     RC = RegCloseKey(hkey) ' 试图关闭关键字
     
104. End Function
     
105. 
     
106. '-------------------------------------------------------------------------------------------------
     
107. '本函数在注册表中读取键值
     
108. 'sample usage - Debug.Print GetKeyValue(HKEY_CLASSES_ROOT, "COMCTL.ListviewCtrl.1\CLSID", "")
     
109. '-------------------------------------------------------------------------------------------------
     
110. Public Function GetKeyValue(KeyRoot As Long, KeyName As String, SubKeyRef As String) As String
     
111.     Dim i As Long ' 循环计数器
     
112.     Dim RC As Long ' 返回代码
     
113.     Dim hkey As Long ' 处理打开的注册表关键字
     
114.     Dim hDepth As Long '
     
115.     Dim sKeyVal As String
     
116.     Dim lKeyValType As Long ' 注册表关键字数据类型
     
117.     Dim tmpVal As String ' 注册表关键字的临时存储器
     
118.     Dim KeyValSize As Long ' 注册表关键字变量尺寸
     
119.    
     
120.     ' 在 KeyRoot {HKEY_LOCAL_MACHINE...} 下打开注册表关键字
     
121.     '------------------------------------------------------------
     
122.     RC = RegOpenKeyEx(KeyRoot, KeyName, 0, KEY_ALL_ACCESS, hkey) ' 打开注册表关键字
     
123.     If (RC <> ERROR_SUCCESS) Then GoTo GetKeyError ' 处理错误...
     
124.     tmpVal = String$(1024, 0) ' 分配变量空间
     
125.     KeyValSize = 1024 ' 标记变量尺寸
     
126.    
     
127.     '------------------------------------------------------------
     
128.     ' 检索注册表关键字的值...
     
129.     '------------------------------------------------------------
     
130.     RC = RegQueryValueEx(hkey, SubKeyRef, 0, _
     
131.     lKeyValType, tmpVal, KeyValSize) ' 获得/创建关键字的值
     
132.     If (RC <> ERROR_SUCCESS) Then GoTo GetKeyError ' 错误处理
     
133.     tmpVal = Left$(tmpVal, InStr(tmpVal, Chr(0)) - 1)
     
134.    
     
135.     '------------------------------------------------------------
     
136.     ' 决定关键字值的转换类型...
     
137.     '------------------------------------------------------------
     
138.     Select Case lKeyValType ' 搜索数据类型...
     
139.     Case REG_SZ, REG_EXPAND_SZ ' 字符串注册表关键字数据类型
     
140.         sKeyVal = tmpVal ' 复制字符串的值
     
141.     Case REG_DWORD ' 四字节注册表关键字数据类型
     
142.         For i = Len(tmpVal) To 1 Step -1 ' 转换每一位
     
143.             sKeyVal = sKeyVal + Hex(Asc(Mid(tmpVal, i, 1))) ' 一个字符一个字符地生成值。
     
144.         Next
     
145.         sKeyVal = Format$("&h" + sKeyVal) ' 转换四字节为字符串
     
146.     End Select
     
147.    
     
148.     GetKeyValue = sKeyVal ' 返回值
     
149.     RC = RegCloseKey(hkey) ' 关闭注册表关键字
     
150.     Exit Function ' 退出
     
151. GetKeyError:     ' 错误发生过后进行清除...
     
152.     GetKeyValue = vbNullString ' 设置返回值为空字符串
     
153.     RC = RegCloseKey(hkey) ' 关闭注册表关键字
     
154. End Function
     

<br /> Option Explicit<br /> ' 这个模块用于读和写注册表关键字。<br /> ' 不同于VB 的内部注册表访问方法，它可以<br /> ' 通过字符串的值来读和写任何注册表关键字。<br /> '---------------------------------------------------------------<br /> '-注册表 API 声明...<br /> 'RegCloseKey 用于关闭系统注册表中的一个项（或键）<br /> 'RegCreateKeyEx用于创建注册表项<br /> 'RegOpenKeyEx用于打开注册表项<br /> 'RegQueryValueEx 用于获取一个项的设置值<br /> 'RegSetValueEx 用于设置指定项的值<br /> '---------------------------------------------------------------<br /> Public Declare Function RegCloseKey Lib "advapi32" (ByVal hkey As Long) As Long<br /> Public Declare Function RegCreateKeyEx Lib "advapi32" Alias "RegCreateKeyExA" (ByVal hkey As Long, ByVal lpSubKey As String, ByVal Reserved As Long, ByVal lpClass As String, ByVal dwOptions As Long, ByVal samDesired As Long, ByRef lpSecurityAttributes As SECURITY_ATTRIBUTES, ByRef phkResult As Long, ByRef lpdwDisposition As Long) As Long<br /> Public 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<br /> Public 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<br /> Public Declare Function RegSetValueEx Lib "advapi32" Alias "RegSetValueExA" (ByVal hkey As Long, ByVal lpValueName As String, ByVal Reserved As Long, ByVal dwType As Long, ByVal lpData As String, ByVal cbData As Long) As Long<br /> '---------------------------------------------------------------<br /> '- 注册表 Api 常数...<br /> '---------------------------------------------------------------<br /> ' Reg Data Types...<br /> Public Const REG_SZ = 1 ' Unicode空终结字符串<br /> Public Const REG_EXPAND_SZ = 2 ' Unicode空终结字符串<br /> Public Const REG_DWORD = 4 ' 32-bit 数字<br /> Public Const REG_BINARY = 3<br /> ' 注册表创建类型值...<br /> Public Const REG_OPTION_NON_VOLATILE = 0 ' 当系统重新启动时，关键字被保留<br /> ' 注册表关键字安全选项...<br /> Public Const READ_CONTROL = &H20000<br /> Public Const KEY_QUERY_VALUE = &H1<br /> Public Const KEY_SET_VALUE = &H2<br /> Public Const KEY_CREATE_SUB_KEY = &H4<br /> Public Const KEY_ENUMERATE_SUB_KEYS = &H8<br /> Public Const KEY_NOTIFY = &H10<br /> Public Const KEY_CREATE_LINK = &H20<br /> Public Const KEY_READ = KEY_QUERY_VALUE + KEY_ENUMERATE_SUB_KEYS + KEY_NOTIFY + READ_CONTROL<br /> Public Const KEY_WRITE = KEY_SET_VALUE + KEY_CREATE_SUB_KEY + READ_CONTROL<br /> Public Const KEY_EXECUTE = KEY_READ<br /> Public Const KEY_ALL_ACCESS = KEY_QUERY_VALUE + KEY_SET_VALUE + _<br /> KEY_CREATE_SUB_KEY + KEY_ENUMERATE_SUB_KEYS + _<br /> KEY_NOTIFY + KEY_CREATE_LINK + READ_CONTROL<br /> <br /> ' 注册表关键字根类型...<br /> Public Const HKEY_CLASSES_ROOT = &H80000000<br /> Public Const HKEY_CURRENT_USER = &H80000001<br /> Public Const HKEY_LOCAL_MACHINE = &H80000002<br /> Public Const HKEY_USERS = &H80000003<br /> Public Const HKEY_PERFORMANCE_DATA = &H80000004<br /> <br /> ' 返回值...<br /> Public Const ERROR_NONE = 0<br /> Public Const ERROR_BADKEY = 2<br /> Public Const ERROR_ACCESS_DENIED = 8<br /> Public Const ERROR_SUCCESS = 0<br /> <br /> '---------------------------------------------------------------<br /> '- 注册表安全属性类型...<br /> '---------------------------------------------------------------<br /> Private Type SECURITY_ATTRIBUTES<br /> nLength As Long<br /> lpSecurityDescriptor As Long<br /> bInheritHandle As Boolean<br /> End Type<br /> '-------------------------------------------------------------------------------------------------<br /> '本函数在注册表中创建新的项及键值<br /> 'sample usage - Debug.Print UpodateKey(HKEY_CLASSES_ROOT, "keyname", "newvalue")<br /> '-------------------------------------------------------------------------------------------------<br /> Public Function UpdateKey(KeyRoot As Long, KeyName As String, SubKeyName As String, SubReg As Long, SubKeyValue As String, IngNumber As Long) As Long<br />     Dim RC As Long ' 返回代码<br />     Dim hkey As Long ' 处理一个注册表关键字<br />     Dim hDepth As Long '<br />     Dim lpAttr As SECURITY_ATTRIBUTES ' 注册表安全类型<br />     <br />     lpAttr.nLength = 50 ' 设置安全属性为缺省值...<br />     lpAttr.lpSecurityDescriptor = 0 ' ...<br />     lpAttr.bInheritHandle = True ' ...<br />     <br />     '------------------------------------------------------------<br />     '- 创建/打开注册表关键字...<br />     '创建/打开//KeyRoot//KeyName<br />     ' 错误处理...<br />     '------------------------------------------------------------<br />     RC = RegCreateKeyEx(KeyRoot, KeyName, 0, "", 0, KEY_WRITE, lpAttr, hkey, hDepth)<br />     If (RC <> ERROR_SUCCESS) Then GoTo CreateKeyError<br />     <br />     '------------------------------------------------------------<br />     '- 创建/修改关键字值...<br />     ' 要让RegSetValueEx() 工作需要输入一个空格...<br />     ' 创建/修改关键字值<br />     '- 关闭注册表关键字...<br />     '------------------------------------------------------------<br />     Select Case SubReg<br />     Case REG_SZ<br />         RC = RegSetValueEx(hkey, SubKeyName, 0, SubReg, SubKeyValue, IngNumber)<br />         If (RC <> ERROR_SUCCESS) Then GoTo CreateKeyError<br />     End Select<br />     RC = RegCloseKey(hkey) ' 退出<br />     Exit Function ' 错误处理<br /> CreateKeyError:<br />     UpdateKey = False ' 设置错误返回代码<br />     RC = RegCloseKey(hkey) ' 试图关闭关键字<br /> End Function<br /> <br /> '-------------------------------------------------------------------------------------------------<br /> '本函数在注册表中读取键值<br /> 'sample usage - Debug.Print GetKeyValue(HKEY_CLASSES_ROOT, "COMCTL.ListviewCtrl.1\CLSID", "")<br /> '-------------------------------------------------------------------------------------------------<br /> Public Function GetKeyValue(KeyRoot As Long, KeyName As String, SubKeyRef As String) As String<br />     Dim i As Long ' 循环计数器<br />     Dim RC As Long ' 返回代码<br />     Dim hkey As Long ' 处理打开的注册表关键字<br />     Dim hDepth As Long '<br />     Dim sKeyVal As String<br />     Dim lKeyValType As Long ' 注册表关键字数据类型<br />     Dim tmpVal As String ' 注册表关键字的临时存储器<br />     Dim KeyValSize As Long ' 注册表关键字变量尺寸<br />     <br />     ' 在 KeyRoot {HKEY_LOCAL_MACHINE...} 下打开注册表关键字<br />     '------------------------------------------------------------<br />     RC = RegOpenKeyEx(KeyRoot, KeyName, 0, KEY_ALL_ACCESS, hkey) ' 打开注册表关键字<br />     If (RC <> ERROR_SUCCESS) Then GoTo GetKeyError ' 处理错误...<br />     tmpVal = String$(1024, 0) ' 分配变量空间<br />     KeyValSize = 1024 ' 标记变量尺寸<br />     <br />     '------------------------------------------------------------<br />     ' 检索注册表关键字的值...<br />     '------------------------------------------------------------<br />     RC = RegQueryValueEx(hkey, SubKeyRef, 0, _<br />     lKeyValType, tmpVal, KeyValSize) ' 获得/创建关键字的值<br />     If (RC <> ERROR_SUCCESS) Then GoTo GetKeyError ' 错误处理<br />     tmpVal = Left$(tmpVal, InStr(tmpVal, Chr(0)) - 1)<br />     <br />     '------------------------------------------------------------<br />     ' 决定关键字值的转换类型...<br />     '------------------------------------------------------------<br />     Select Case lKeyValType ' 搜索数据类型...<br />     Case REG_SZ, REG_EXPAND_SZ ' 字符串注册表关键字数据类型<br />         sKeyVal = tmpVal ' 复制字符串的值<br />     Case REG_DWORD ' 四字节注册表关键字数据类型<br />         For i = Len(tmpVal) To 1 Step -1 ' 转换每一位<br />             sKeyVal = sKeyVal + Hex(Asc(Mid(tmpVal, i, 1))) ' 一个字符一个字符地生成值。<br />         Next<br />         sKeyVal = Format$("&h" + sKeyVal) ' 转换四字节为字符串<br />     End Select<br />     <br />     GetKeyValue = sKeyVal ' 返回值<br />     RC = RegCloseKey(hkey) ' 关闭注册表关键字<br />     Exit Function ' 退出<br /> GetKeyError:     ' 错误发生过后进行清除...<br />     GetKeyValue = vbNullString ' 设置返回值为空字符串<br />     RC = RegCloseKey(hkey) ' 关闭注册表关键字<br /> End Function<br />

qjcpj

二楼提供的代码在VBA中是否有效？