TRegKeyInfo is a type used by the GetRegKeyInfo method of TRegistery.

TRegKeyInfo = record
  NumSubKeys: Integer;
  MaxSubKeyLen: Integer;
  NumValues: Integer;
  MaxValueLen: Integer;
  MaxDataLen: Integer;
  FileTime: TFileTime;
end;

struct TRegKeyInfo {
  int NumSubKeys;
  int MaxSubKeyLen;
  int NumValues;
  int MaxValueLen;
  int MaxDataLen;
  TFileTime FileTime;
};