Reference TSizingPanel

  TSizingPanel = class(TSurfaceCustomControl)
  protected
    procedure Draw; override;
    procedure Resize; override;
    function GetLogicalClientRect: TRect; override;
    procedure MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
    procedure MouseMove(Shift: TShiftState; X, Y: Integer); override;
    procedure MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
  public
    { Create a new sizing panel }
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
    { Arrange child controls in a single row using
      Codebot.Controls.ArrangeControls }
    procedure ArrangeControls;
  published
    { Background controls the background styling of a panel }
    property Background: TPanelBackground read FBackground write SetBackground default pbColor;
    { When background is set to pbImage this value is painted in the background
      and its edges are clamped }
    property Image: TSurfaceBitmap read FImage write SetImage;
    { Borders apply a single pixel border to an edge }
    property Borders: TEdges read FBorders write SetBorders;
    { Shadows apply a drop shadow to an edge }
    property Shadows: TEdges read FShadows write SetShadows;
    { Padding indents the placement of aligned child controls }
    property Padding: TEdgeOffset read FPadding write SetPadding;
    { Splitter allows the panel to be resized using the mouse }
    property Splitter: TSplitter read FSplitter write SetSplitter;
    property Align;
    property Anchors;
    property AutoSize;
    property BorderSpacing;
    property BidiMode;
    property BorderWidth;
    property BorderStyle;
    property ChildSizing;
    property ClientHeight;
    property ClientWidth;
    property Color;
    property Constraints;
    property DockSite;
    property DragCursor;
    property DragKind;
    property DragMode;
    property Enabled;
    property Font;
    property ParentBidiMode;
    property ParentColor;
    property ParentFont;
    property ParentShowHint;
    property PopupMenu;
    property ShowHint;
    property TabOrder;
    property TabStop;
    property UseDockManager default True;
    property Visible;
    property OnClick;
    property OnContextPopup;
    property OnDockDrop;
    property OnDockOver;
    property OnDblClick;
    property OnDragDrop;
    property OnDragOver;
    property OnDraw;
    property OnEndDock;
    property OnEndDrag;
    property OnEnter;
    property OnExit;
    property OnGetSiteInfo;
    property OnGetDockCaption;
    property OnMouseDown;
    property OnMouseEnter;
    property OnMouseLeave;
    property OnMouseMove;
    property OnMouseUp;
    property OnMouseWheel;
    property OnMouseWheelDown;
    property OnMouseWheelUp;
    property OnResize;
    property OnStartDock;
    property OnStartDrag;
    property OnUnDock;
  end;