CharInSet doesn't work with non English letters?

Question

I have updated an application from Delphi 2007 to Delphi 2010, everything went fine, except one statement that compiled fine but not working which is:

If Edit1.T         


        

Answer 1

In addition.

sets are limited to ordinal values of 256 elements. So AnsiChar fits and (Unicode)Char does not fit. You can use CharInSet to port pre unicode versions of Delphi to the unicode versions. Because of the set limitation, sets are not extremely usefull anymore with Chars.

The reason behind this, is that sets are implemented as bitmasks. You are free to implement your own version of a set. For example:

type
  TSet = class 
  public
    procedure Add(const AElem: T);
    function InSet(const AElem: T): Boolean;
  end;