这样为什么不行？
RegOpenKeyEx(HKEY_LOCAL_MACHINE, "\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", 0, KEY_ALL_ACCESS, &hKey)
执行不成功，为什么？
问题点数：20、回复次数：5Top
1 楼xyzboat（一叶小舟）回复于 2001-03-05 12:43:00 得分 5
参数不对吧?
还可以用FormatMessage()输出错误信息.Top
2 楼xyzboat（一叶小舟）回复于 2001-03-05 12:44:00 得分 0
RegOpenKeyEx 和 RegOpenKey 是不一样的.Top
3 楼orbit（走了走了）回复于 2001-03-05 12:56:00 得分 15
改成：
RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", 0, KEY_ALL_ACCESS, &hKey)
Top
4 楼rememberME（wfj）回复于 2001-03-05 13:08:00 得分 0
谢谢orbit，加分中。Top
5 楼111222（www.111222.cn）回复于 2001-03-05 13:10:00 得分 0
你没有MSDN，对吗？
我粘贴出来给你
RegOpenKeyEx
The RegOpenKeyEx function opens the specified key.
LONG RegOpenKeyEx(
HKEY hKey, // handle to open key
LPCTSTR lpSubKey, // address of name of subkey to open
DWORD ulOptions, // reserved
REGSAM samDesired, // security access mask
PHKEY phkResult // address of handle to open key
);
Parameters
hKey
Handle to a currently open key or any of the following predefined reserved handle values:
HKEY_CLASSES_ROOT
HKEY_CURRENT_CONFIG
HKEY_CURRENT_USER
HKEY_LOCAL_MACHINE
HKEY_USERS
Windows NT: HKEY_PERFORMANCE_DATA
Windows 95 and Windows 98: HKEY_DYN_DATA
lpSubKey
Pointer to a null-terminated string containing the name of the subkey to open. If this parameter is NULL or a pointer to an empty string, the function will open a new handle to the key identified by the hKey parameter. In this case, the function will not close the handles previously opened.
ulOptions
Reserved; must be zero.
samDesired
Specifies an access mask that describes the desired security access for the new key. This parameter can be a combination of the following values: Value Meaning
KEY_ALL_ACCESS Combination of KEY_QUERY_VALUE, KEY_ENUMERATE_SUB_KEYS, KEY_NOTIFY, KEY_CREATE_SUB_KEY, KEY_CREATE_LINK, and KEY_SET_VALUE access.
KEY_CREATE_LINK Permission to create a symbolic link.
KEY_CREATE_SUB_KEY Permission to create subkeys.
KEY_ENUMERATE_SUB_KEYS Permission to enumerate subkeys.
KEY_EXECUTE Permission for read access.
KEY_NOTIFY Permission for change notification.
KEY_QUERY_VALUE Permission to query subkey data.
KEY_READ Combination of KEY_QUERY_VALUE, KEY_ENUMERATE_SUB_KEYS, and KEY_NOTIFY access.
KEY_SET_VALUE Permission to set subkey data.
KEY_WRITE Combination of KEY_SET_VALUE and KEY_CREATE_SUB_KEY access.
phkResult
Pointer to a variable that receives a handle to the opened key. When you no longer need the returned handle, call the RegCloseKey function to close it.
Return Values
If the function succeeds, the return value is ERROR_SUCCESS.
If the function fails, the return value is a nonzero error code defined in WINERROR.H. You can use the FormatMessage function with the FORMAT_MESSAGE_FROM_SYSTEM flag to get a generic description of the error.
Remarks
Unlike the RegCreateKeyEx function, the RegOpenKeyEx function does not create the specified key if the key does not exist in the registry.
QuickInfo
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Requires version 1.0 or later.
Header: Declared in winreg.h.
Import Library: Use advapi32.lib.
Unicode: Implemented as Unicode and ANSI versions on Windows NT.
See Also
Registry Overview, Registry Functions, RegCloseKey, RegCreateKeyEx, RegDeleteKey, RegOpenKey
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