function DeleteLineBreaks(const S: string): string;
var
  Source, SourceEnd: PChar;
begin
  Source := Pointer(S);
  SourceEnd := Source + Length(S);
  while Source < SourceEnd do
  begin
    case Source^ of
      #10: Source^ := #32;
      #13: Source^ := #32;
    end;
    Inc(Source);
  end;
  Result := S;
end;