[Qt] problem with CopyUnicodeToPWideString() from qt4.pas

[zeljko]

Hi,

I'm implementing TCustomEdit OnChange event, and found that 
qt4.CopyUnicodeToPWideString() raises AV

{$IFDEF LINUX}
begin
  SetLength(S, Len);  <-------------------- HERE IS AV
  Move(Unicode[0],S[1],Len*2);
end;
{$ENDIF}

so I added an small workaround, not QLineEdit_textChanged_Event properly 
works:

{$IFDEF LINUX}
begin
  try
  SetLength(S, Len);  <-------------------- HERE IS AV
  except
     exit;
  end;
  Move(Unicode[0],S[1],Len*2);
end;
{$ENDIF}

After adding try..except everything works fine.
What are you guys think about this ? FPC bug ?

Felipe, please apply my last patch withTQtWSCustomEdit update.

cheers,
  zeljko