Need help with TRichEdit

Is there a way to get the character index of the top left corner and bottom right corner of the TRichEdit Client Rectangle?

I'm using Delphi 3.0 for my development

Thanks in Advance
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You use the EM_CHARFROMPOS message.

E.g.  For top left:
  ChPos: DWord;
  ChIx: Word;
  ChPos := SendMessage(MyRichEdit.Handle, EM_CHARFROMPOS, 0, MakeLParam(1, 1));
  ChIx := LoWord(ChPos);

Thus, to get character at top left:
  TopLeftCh := Copy(MyRichEdit, ChIx + 1, 1);

(My riched32.dll appears to cause an access violation if invalid coordinates are given...)


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ermacAuthor Commented:
It doesn't return me the correct character index and I can't get the character index of the bottom right also (It gives me an access violation)

Any ideas?
Mmm...  I think this API call is buggy.  I have heard from a colleague that he also couldn't get it to work properly.  (Mine did work, though, for the top-left char index.  Are you using different fonts?  I tried with default font only.)
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