TRichView.com

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procedure TForm3.RichViewEdit1KeyDown(Sender: TObject; var Key: Word;
  Shift: TShiftState);
var
  rve: TCustomRichViewEdit;
begin
  rve := (Sender as TCustomRichViewEdit).TopLevelEditor;
  if (Key = VK_TAB) and not (ssCtrl in Shift) and
    not rve.SelectionExists and
    (rve.CurItemNo > 0) and
    (rve.OffsetInCurItem = rve.GetOffsBeforeItem(rve.CurItemNo)) and
    (rve.GetItemStyle(rve.CurItemNo - 1) = rvsListMarker)
  then
  begin
    if ssShift in Shift then
      rve.ChangeListLevels(-1)
    else
      rve.ChangeListLevels(1);
    Key := 0;
    Include(rve.RVData.State, rvstIgnoreNextChar);
  end;
end;

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Include(rve.RVData.State, rvstIgnoreNextChar)

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procedure TForm3.RichViewEdit1KeyDown(Sender: TObject; var Key: Word;
  Shift: TShiftState);
var
  rve: TCustomRichViewEdit;
begin
  rve := (Sender as TCustomRichViewEdit).TopLevelEditor;
  if (Key = VK_TAB) and not (ssCtrl in Shift) and
    not rve.SelectionExists and
    (rve.CurItemNo > 0) and
    (rve.OffsetInCurItem = rve.GetOffsBeforeItem(rve.CurItemNo)) and
    (rve.GetItemStyle(rve.CurItemNo - 1) = rvsListMarker)
    then
  begin
    if ssShift in Shift then
      rve.ChangeListLevels(-1)
    else
      rve.ChangeListLevels(1);
    Key := 0;
    IgnoreNextTab := True;
  end;
end;

Code: Select all

procedure TForm3.RichViewEdit1KeyPress(Sender: TObject; var Key: Char);
begin
  if IgnoreNextTab then
  begin
    IgnoreNextTab := False;
    if Key = #9 then
      Key := #0;
    exit;
  end;
end;