subkeyNames property

Implementation

Iterable<String> get subkeyNames sync* {
  final keyInfo = queryInfo();

  // Allocate enough length for the maximum key name (including extra for the
  // null terminator).
  final keyNameLength = keyInfo.subKeyNameMaxLength + 1;
  final lpName = wsalloc(keyNameLength);
  final lpcchName = calloc<DWORD>();

  try {
    for (var idx = 0; idx < keyInfo.subKeyCount; idx++) {
      // Set this size each time, since it's reset to the actual length by the
      // call.
      lpcchName.value = keyNameLength;

      final retcode = RegEnumKeyEx(
          hkey, idx, lpName, lpcchName, nullptr, nullptr, nullptr, nullptr);
      if (retcode == WIN32_ERROR.ERROR_SUCCESS) yield lpName.toDartString();
    }
  } finally {
    free(lpName);
    free(lpcchName);
  }
}