Home Delphi - How to get substring from PAnsiChar?
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Delphi - How to get substring from PAnsiChar?

user3857505 Published in 2018-02-13 12:05:20Z

How to get a substring from a string or stream pointed by a PAnsiChar? Copy command's document says it does not work well with pointers. http://docwiki.embarcadero.com/Libraries/Tokyo/en/System.Copy

MBo Reply to 2018-02-13 17:06:34Z

Use SetString procedure.

If you want to copy a piece from the middle, just use pointer to needed beginning like this:

SetString(s, PAnsiChar(@p[3]), 2);

Note that you can use Copy - PChar will be implicitly transformed to string

  s: string;
  p: Pchar;
  p := '12345';
  s := Copy(p, 1, 3);
  Caption := s;
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