使用RegEnumKeyEx函数遍历注册表,返回键名
LONG RegEnumKeyEx(
HKEY hKey, // handle to key to enumerate
DWORD dwIndex, // index of subkey to enumerate
LPTSTR lpName, // address of buffer for subkey name
LPDWORD lpcbName, // address for size of subkey buffer
LPDWORD lpReserved, // reserved
LPTSTR lpClass, // address of buffer for class string
LPDWORD lpcbClass, // address for size of class buffer
PFILETIME lpftLastWriteTime
// address for time key last written to
);