The RegOpenKey function can help you.
The RegOpenKeyEx function opens the specified key.
LONG RegOpenKeyEx(
HKEY hKey, // handle of open key
LPCTSTR lpszSubKey, // address of name of subkey to open
DWORD dwReserved, // reserved
REGSAM samDesired, // security access mask
PHKEY phkResult // address of handle of open key
);
Parameters
hKey
Identifies a currently open key or any of the following predefined
reserved handle values:
HKEY_CLASSES_ROOT
HKEY_CURRENT_USER
HKEY_LOCAL_MACHINE
HKEY_USERS
lpszSubKey
Points 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 of the key identified by the hKey
parameter. In this case, the function will not close the handles
previously opened.
dwReserved
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
Points to a variable that receives the handle of the opened key.
Return Value
If the function succeeds, the return value is ERROR_SUCCESS.
If the function fails, the return value is an error value.
Bruno Berteau
http://perso.club-internet.fr/bberteau
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