Table of Contents

Options and Configuration

TTMSFNCMemo.Options is a TTMSFNCMemoOptions instance that controls every UI and editing behaviour. Most options map directly to Monaco Editor configuration keys and can be changed at any time.

TTMSFNCMemo with various options enabled

Display options

Property Default Description
LineNumbers True Show or hide line numbers in the gutter.
GlyphMargin False Show the glyph margin column (required for breakpoints and bookmarks).
RenderIndentGuides True Show vertical indent guide lines.
RenderLineHighlight hlNone Highlight the current line: hlNone, hlLine, hlGutter, hlAll.
RenderLineHighlightOnlyWhenFocus False Restrict line highlight to when the editor has focus.
RenderWhiteSpace rwsNone Render whitespace characters: rwsNone, rwsBoundary, rwsSelection, rwsAll.
SelectionHighlight True Highlight all other occurrences of the selected text.
RoundedSelection True Render selections with rounded corners.
OverviewRulerLanes 3 Number of vertical lanes in the overview ruler (right edge).
OverviewRulerBorder True Draw a border around the overview ruler.

Editing behaviour

Property Default Description
ContextMenu True Enable or disable the right-click context menu.
DragAndDrop True Enable drag-and-drop of text and files.
EmptySelectionClipboard True Ctrl+C with no selection copies the entire current line.
Folding True Enable code folding.
FoldingHighlights True Highlight folding region start/end lines.
FormatOnPaste False Auto-format pasted code.
FormatOnType False Auto-format as you type.
MouseWheelZoom False Allow Ctrl+MouseWheel to zoom the font.
Links True Render clickable link underlines.
AutoOpenLink True Ctrl+click opens a link in the default browser.
BlockSelection False Allow Alt+drag for block/column selection.
SelectOnLineNumbers False Clicking a line number selects the whole line.
TabSize 4 Number of spaces per tab stop.
WordWrap False Wrap long lines.
WordWrapColumn 80 Wrap at this column when WordWrap is True.
WantTab (on TTMSFNCMemo) False When True, Tab inserts a tab character instead of moving focus.

Native popup menu (Windows)

PopupMenu on TTMSFNCMemo is the standard inherited menu-association property, but assigning it changes how the editor's context menu behaves: when a PopupMenu is set, the memo disables its own built-in (Monaco) context menu and lets your native TPopupMenu show on right-click instead. This is currently wired up on Windows only.

Use it when you need application-specific commands (custom actions, clipboard shortcuts, or items tied to your own menu structure) instead of the built-in editor menu:

procedure TForm1.FormCreate(Sender: TObject);
var
  mi: TMenuItem;
begin
  PopupMenu1 := TPopupMenu.Create(Self);

  mi := TMenuItem.Create(PopupMenu1);
  mi.Text := 'Cut';
  mi.OnClick := PopupMenuCutClick;
  PopupMenu1.AddObject(mi);

  mi := TMenuItem.Create(PopupMenu1);
  mi.Text := 'Copy';
  mi.OnClick := PopupMenuCopyClick;
  PopupMenu1.AddObject(mi);

  mi := TMenuItem.Create(PopupMenu1);
  mi.Text := 'Paste';
  mi.OnClick := PopupMenuPasteClick;
  PopupMenu1.AddObject(mi);

  // Assigning PopupMenu disables the built-in (Monaco) context menu and
  // wires the native popup menu into the editor's context-menu handling.
  TMSFNCMemo1.PopupMenu := PopupMenu1;
end;

procedure TForm1.PopupMenuCutClick(Sender: TObject);
begin
  TMSFNCMemo1.CutToClipBoard;
end;

procedure TForm1.PopupMenuCopyClick(Sender: TObject);
begin
  TMSFNCMemo1.CopyToClipBoard;
end;

procedure TForm1.PopupMenuPasteClick(Sender: TObject);
begin
  TMSFNCMemo1.PasteFromClipBoard;
end;
Note

This only replaces the menu shown by the memo itself; it does not affect Options.ContextMenu, which still governs whether the built-in menu would appear when no PopupMenu is assigned.

Code features

Property Default Description
UseCustomCodeCompletion False Enable custom code-completion items.
BracketPairColorization False Colour-code matching bracket pairs.
CodeLens True Show CodeLens annotations (reference counts, etc.).

Minimap

The minimap is a bird's-eye view rendered on the right edge of the editor.

// --- Display ---
TMSFNCMemo1.Options.LineNumbers              := True;
TMSFNCMemo1.Options.GlyphMargin             := True;   // required for breakpoints/bookmarks
TMSFNCMemo1.Options.RenderIndentGuides      := True;
TMSFNCMemo1.Options.RenderLineHighlight     := hlAll;  // hlNone/hlLine/hlGutter/hlAll
TMSFNCMemo1.Options.RenderWhiteSpace        := rwsAll; // rwsNone/rwsBoundary/rwsSelection/rwsAll
TMSFNCMemo1.Options.SelectionHighlight      := True;
TMSFNCMemo1.Options.RoundedSelection        := True;
TMSFNCMemo1.Options.OverviewRulerLanes      := 3;
TMSFNCMemo1.Options.OverviewRulerBorder     := True;

// --- Editing behaviour ---
TMSFNCMemo1.Options.ContextMenu             := True;
TMSFNCMemo1.Options.DragAndDrop             := True;
TMSFNCMemo1.Options.EmptySelectionClipboard := True;   // Ctrl+C with no selection copies the line
TMSFNCMemo1.Options.Folding                 := True;
TMSFNCMemo1.Options.FoldingHighlights       := True;
TMSFNCMemo1.Options.FormatOnPaste           := True;
TMSFNCMemo1.Options.FormatOnType            := True;
TMSFNCMemo1.Options.MouseWheelZoom          := True;
TMSFNCMemo1.Options.Links                   := True;
TMSFNCMemo1.Options.AutoOpenLink            := True;
TMSFNCMemo1.Options.BlockSelection          := True;
TMSFNCMemo1.Options.TabSize                 := 2;
TMSFNCMemo1.Options.WordWrap                := True;
TMSFNCMemo1.WantTab                         := True;   // Tab key stays in the editor

// --- Code features ---
TMSFNCMemo1.Options.CodeLens                := False;
TMSFNCMemo1.Options.UseCustomCodeCompletion := True;
TMSFNCMemo1.Options.BracketPairColorization := True;

// --- Minimap ---
TMSFNCMemo1.Options.MiniMap.Enabled          := True;
TMSFNCMemo1.Options.MiniMap.Autohide         := False;
TMSFNCMemo1.Options.MiniMap.MaxColumn        := 120;
TMSFNCMemo1.Options.MiniMap.RenderCharacters := True;
TMSFNCMemo1.Options.MiniMap.Scale            := 1;
TMSFNCMemo1.Options.MiniMap.ShowSlider       := 'mouseover'; // 'always' | 'mouseover'
TMSFNCMemo1.Options.MiniMap.Side             := 'right';     // 'right' | 'left'

// --- Scrollbar ---
TMSFNCMemo1.Options.Scrollbar.HandleMouseWheel       := True;
TMSFNCMemo1.Options.Scrollbar.Horizontal             := saAuto; // saAuto/saHidden/saVisible
TMSFNCMemo1.Options.Scrollbar.HorizontalScrollbarSize := 10;
TMSFNCMemo1.Options.Scrollbar.Vertical               := saAuto;
TMSFNCMemo1.Options.Scrollbar.VerticalScrollbarSize  := 10;
TMSFNCMemo1.Options.Scrollbar.ScrollByPage           := False;

// --- Theme and language (on TTMSFNCMemo directly) ---
TMSFNCMemo1.Language        := mlPascal;
TMSFNCMemo1.Theme           := mtVisualStudio;     // mtVisualStudio/mtVisualStudioDark/mtHighContrastDark/mtCustom
TMSFNCMemo1.LibraryLocation := True;               // True = CDN; False = local files
TMSFNCMemo1.ReadOnly        := False;
Property Default Description
MiniMap.Enabled True Show or hide the minimap.
MiniMap.Autohide False Hide the minimap when the mouse is not hovering.
MiniMap.MaxColumn 120 Maximum width of the minimap in characters.
MiniMap.RenderCharacters True Render actual characters; False renders colour blocks.
MiniMap.Scale 1 Relative font size in the minimap.
MiniMap.ShowSlider 'mouseover' When to show the minimap slider: 'always' or 'mouseover'.
MiniMap.Side 'right' Which side to place the minimap: 'right' or 'left'.
MiniMap.Size 'actual' Minimap render mode: 'actual', 'fill', or 'fit'.

Scrollbar

Property Default Description
Scrollbar.Horizontal saAuto Horizontal scrollbar visibility: saAuto, saHidden, saVisible.
Scrollbar.Vertical saAuto Vertical scrollbar visibility.
Scrollbar.HorizontalScrollbarSize 10 Pixel height of the horizontal scrollbar.
Scrollbar.VerticalScrollbarSize 10 Pixel width of the vertical scrollbar.
Scrollbar.HandleMouseWheel True Scroll on mouse-wheel events.
Scrollbar.ScrollByPage False Gutter-area clicks scroll by page instead of jumping to position.

Language and theme

Set directly on TTMSFNCMemo, not in Options:

TMSFNCMemo1.Language := mlPascal;          // see TTMSFNCMemoLanguage for all values
TMSFNCMemo1.Theme    := mtVisualStudioDark; // mtVisualStudio/mtVisualStudioDark/mtHighContrastDark/mtCustom

Over 50 languages are built in, including Pascal, TypeScript, Python, C#, JSON, Markdown, and SQL.

// Override font
TMSFNCMemo1.Font.Name := 'Fira Code';
TMSFNCMemo1.Font.Size := 13;

// Use local Monaco library files instead of CDN
TMSFNCMemo1.LibraryLocation := False;

Quick reference: full options snippet

// --- Display ---
TMSFNCMemo1.Options.LineNumbers              := True;
TMSFNCMemo1.Options.GlyphMargin             := True;   // required for breakpoints/bookmarks
TMSFNCMemo1.Options.RenderIndentGuides      := True;
TMSFNCMemo1.Options.RenderLineHighlight     := hlAll;  // hlNone/hlLine/hlGutter/hlAll
TMSFNCMemo1.Options.RenderWhiteSpace        := rwsAll; // rwsNone/rwsBoundary/rwsSelection/rwsAll
TMSFNCMemo1.Options.SelectionHighlight      := True;
TMSFNCMemo1.Options.RoundedSelection        := True;
TMSFNCMemo1.Options.OverviewRulerLanes      := 3;
TMSFNCMemo1.Options.OverviewRulerBorder     := True;

// --- Editing behaviour ---
TMSFNCMemo1.Options.ContextMenu             := True;
TMSFNCMemo1.Options.DragAndDrop             := True;
TMSFNCMemo1.Options.EmptySelectionClipboard := True;   // Ctrl+C with no selection copies the line
TMSFNCMemo1.Options.Folding                 := True;
TMSFNCMemo1.Options.FoldingHighlights       := True;
TMSFNCMemo1.Options.FormatOnPaste           := True;
TMSFNCMemo1.Options.FormatOnType            := True;
TMSFNCMemo1.Options.MouseWheelZoom          := True;
TMSFNCMemo1.Options.Links                   := True;
TMSFNCMemo1.Options.AutoOpenLink            := True;
TMSFNCMemo1.Options.BlockSelection          := True;
TMSFNCMemo1.Options.TabSize                 := 2;
TMSFNCMemo1.Options.WordWrap                := True;
TMSFNCMemo1.WantTab                         := True;   // Tab key stays in the editor

// --- Code features ---
TMSFNCMemo1.Options.CodeLens                := False;
TMSFNCMemo1.Options.UseCustomCodeCompletion := True;
TMSFNCMemo1.Options.BracketPairColorization := True;

// --- Minimap ---
TMSFNCMemo1.Options.MiniMap.Enabled          := True;
TMSFNCMemo1.Options.MiniMap.Autohide         := False;
TMSFNCMemo1.Options.MiniMap.MaxColumn        := 120;
TMSFNCMemo1.Options.MiniMap.RenderCharacters := True;
TMSFNCMemo1.Options.MiniMap.Scale            := 1;
TMSFNCMemo1.Options.MiniMap.ShowSlider       := 'mouseover'; // 'always' | 'mouseover'
TMSFNCMemo1.Options.MiniMap.Side             := 'right';     // 'right' | 'left'

// --- Scrollbar ---
TMSFNCMemo1.Options.Scrollbar.HandleMouseWheel       := True;
TMSFNCMemo1.Options.Scrollbar.Horizontal             := saAuto; // saAuto/saHidden/saVisible
TMSFNCMemo1.Options.Scrollbar.HorizontalScrollbarSize := 10;
TMSFNCMemo1.Options.Scrollbar.Vertical               := saAuto;
TMSFNCMemo1.Options.Scrollbar.VerticalScrollbarSize  := 10;
TMSFNCMemo1.Options.Scrollbar.ScrollByPage           := False;

// --- Theme and language (on TTMSFNCMemo directly) ---
TMSFNCMemo1.Language        := mlPascal;
TMSFNCMemo1.Theme           := mtVisualStudio;     // mtVisualStudio/mtVisualStudioDark/mtHighContrastDark/mtCustom
TMSFNCMemo1.LibraryLocation := True;               // True = CDN; False = local files
TMSFNCMemo1.ReadOnly        := False;

See also