_GetRegistryKey

DWORD _GetRegistryKey(DWORD dwType, LPSTR lpszDevName, 
       DWORD dwFlags, LPHKEY lphKey);

Gets a registry key handle for the given device name under the given branch of the HKEY_LOCAL_MACHINE key.

Returns ERROR_SUCCESS if successful; otherwise, one of the error values given in Error Values.

dwType

Parent registry branch in which to open the key. Can be one of these values:

REGTYPE_CLASS	\System\CurrentControlSet\Services\Class
REGTYPE_ENUM	\ENUM

lpszDevName

Address of a null-terminated string specifying the device-name subkey.

dwFlags

Action flags. Can be 0 or REGKEY_CREATE_IFNOTEXIST to indicate the key should be created if it does not already exist.

lphKey

Address of the variable that receives the handle of the opened key.