[Bug 16597] Wrong detection of SelAttributes in RichEdit

http://bugs.winehq.org/show_bug.cgi?id=16597

--- Comment #2 from bas   2008-12-23 05:01:46 ---
The code of the demo-application:

---------------------
procedure TForm14.FormCreate(Sender: TObject);
begin
  Memo1Change(nil);
end;

procedure TForm14.Memo1Change(Sender: TObject);
begin
  T2KItemEdit1.BBCode := Memo1.Text;
end;

procedure TForm14.T2KItemEdit1Change(Sender: TObject);
begin
  Memo2.Text := T2KItemEdit1.BBCode;
end;
---------------------

The code of the procedure that introduces the problem:

---------------------
class function TT2KBBCode.FromRichEdit(ARichEdit: TBasCustomRichEdit):
WideString;
var
  LRow: Integer;
  LBBState: TBBState;

procedure CheckLine(ALine: WideString);
  var
    LCol: Integer;

procedure AddControl;
    begin
      // Bold
      if (fsBold in ARichEdit.SelAttributes.Style) and (not LBBState.Bold) then
      begin
        LBBState.Bold := True;
        LBBState.Text.AppendString(cBBControlOpen + cBBBold + cBBControlClose);
      end
      else
        if (not (fsBold in ARichEdit.SelAttributes.Style)) and LBBState.Bold
then
        begin
          LBBState.Bold := False;
          LBBState.Text.AppendString(cBBControlOpen + cBBBoldEnd +
cBBControlClose);
        end;

// Italic
      if (fsItalic in ARichEdit.SelAttributes.Style) and (not LBBState.Italic)
then
      begin
        LBBState.Italic := True;
        LBBState.Text.AppendString(cBBControlOpen + cBBItalic +
cBBControlClose);
      end
      else
        if (not (fsItalic in ARichEdit.SelAttributes.Style)) and
LBBState.Italic then
        begin
          LBBState.Italic := False;
          LBBState.Text.AppendString(cBBControlOpen + cBBItalicEnd +
cBBControlClose);
        end;

// Underline
      if (fsUnderline in ARichEdit.SelAttributes.Style) and (not
LBBState.Underline) then
      begin
        LBBState.Underline := True;
        LBBState.Text.AppendString(cBBControlOpen + cBBUnderline +
cBBControlClose);
      end
      else
        if (not (fsUnderline in ARichEdit.SelAttributes.Style)) and
LBBState.Underline then
        begin
          LBBState.Underline := False;
          LBBState.Text.AppendString(cBBControlOpen + cBBUnderlineEnd +
cBBControlClose);
        end;

// Strike
      if (fsStrikeOut in ARichEdit.SelAttributes.Style) and (not
LBBState.Strike) then
      begin
        LBBState.Strike := True;
        LBBState.Text.AppendString(cBBControlOpen + cBBStrike +
cBBControlClose);
      end
      else
        if (not (fsStrikeOut in ARichEdit.SelAttributes.Style)) and
LBBState.Strike then
        begin
          LBBState.Strike := False;
          LBBState.Text.AppendString(cBBControlOpen + cBBStrikeEnd +
cBBControlClose);
        end;

if ARichEdit.CharScript <> LBBState.CharScript then
      begin
        case LBBState.CharScript of
          csSuper: LBBState.Text.AppendString(cBBControlOpen + cBBSuperEnd +
cBBControlClose);
          csSub: LBBState.Text.AppendString(cBBControlOpen + cBBSubEnd +
cBBControlClose);
        end;

LBBState.CharScript := ARichEdit.CharScript;

case LBBState.CharScript of
          csSuper: LBBState.Text.AppendString(cBBControlOpen + cBBSuper +
cBBControlClose);
          csSub: LBBState.Text.AppendString(cBBControlOpen + cBBSub +
cBBControlClose);
        end;
      end;

if LBBState.Color <> ARichEdit.SelAttributes.Color then
      begin
        if ARichEdit.SelAttributes.Color = clRed then
        begin
          LBBState.Text.AppendString(cBBControlOpen + cBBRed +
cBBControlClose);
          LBBState.Color := clRed;
        end
        else
        begin
          LBBState.Text.AppendString(cBBControlOpen + cBBRedEnd +
cBBControlClose);
          LBBState.Color := cDefaultColor;
        end;
      end;
    end;

begin
    for LCol := 1 to Length(ALine) do
    begin
      ARichEdit.SelLength := 1;
      AddControl;
      LBBState.Text.AppendString(ARichEdit.SelText);

ARichEdit.SelStart := ARichEdit.SelStart + 1;
    end;

if LRow < ARichEdit.Lines.Count - 1 then
      LBBState.Text.AppendString(cBBLineBreakComplete);
  end;

begin
  LBBState := TBBState.Create;
  try
    LBBState.Color := cDefaultColor;
    for LRow := 0 to ARichEdit.Lines.Count - 1 do
    begin
      ARichEdit.SelStart :=
ARichEdit.EmulatedCharPos(ARichEdit.Perform(EM_LINEINDEX, LRow, 0));
      CheckLine(ARichEdit.Lines[LRow]);
    end;

LBBState.Text.Trim;
    Result := LBBState.Text.Result;
  finally
    LBBState.Free;
  end;
end;
---------------------