Most of these functions are not available
So I was going to use a mask edit and mask numbers or Hex values
going to make a loop
read each character - multiply the value by 10 or 16 and add the value
And have a StrToUInt64 or HexToUInt64
USE a const hex: array [0…15] of char = [‘0’, ‘1’, ‘2’,…
that is not hard
Doing UInt64toHex, UInt64toStr,
can you suggest a conversion back to a UInt64 from Hex or Decimal please