Find the position of a unicodechar in a unicodestring

Question

I'm working with Unicode. I want to find the position of a char in a UnicodeString.

For example: the position of á in lùáxõ is 3.

I have tried several ways, Google'd a lot, read the Lazarus documentation, but still nothing works.

I'm using Lazarus 1.6 and FPC 3.x.

Answer 1

Use pos() as David says, but to avoid problems with overloading make sure both arguments are explicitly typed unicode*

E.g. copy and paste this in notepad, and save with utf-8 encoding

{$mode delphi}
{$codepage utf8} // source encoding is utf8, just in case.

var c : unicodechar;
    s : unicodestring;
    i : Integer;
begin
  s:='lùáxõ';
  c:='á'; // or whatever codepoint value of the char is.
  i:=pos(c,s);
  writeln(i);
end.