Ord

function Ord(Arg AnsiChar | Char | WideChar | Enumeration | Integer):Integer;

The Ord function returns an integer value for any ordinal type Arg. It is principally used to convert characters or enumerations into their numeric equivalents.

Example:

var
  S   : AnsiChar;
  M   : Char;
  W   : WideChar;
  control   : Boolean;
  number   : Integer;
  I64 : Int64;

begin

  // Set type values
  S   := 'S';
  M   := 'M';
  W   := 'W';
  control   := True;
  number   := 22;
  I64 := 64;

  // Show value
  ShowMessage('S = '+IntToStr(Ord(S)));
  ShowMessage('M = '+IntToStr(Ord(M)));
  ShowMessage('W = '+IntToStr(Ord(W)));
  ShowMessage('control = '+IntToStr(Ord(control)));
  ShowMessage('number = '+IntToStr(Ord(number)));
  ShowMessage('I64 = '+IntToStr(Ord(I64)));

end;

Output:

S = 83
M = 77
W = 87
control = -1
number = 22
I64 = 64