public static extern int CeRegCloseKey(uint hkey);

function info on msdn at http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wceactsy/html/cerefCeRegCloseKeyRAPI.asp

    CeRegCloseKey(key);

CeRegCloseKey(key);

    CeRegCloseKey(key2);

CeRegCloseKey(key);

CeRegCloseKey(key);

CeRegCloseKey(key);

CeRegCloseKey(key);

    CeRegCloseKey(key)