[[AgustinOrtu]]

Al parecer, los eventos en Delphi son identificados mediante TTypeKind.tkMethod

Entonces, podes hacer esto:

Código Delphi [-]
uses
  Rtti;

procedure TForm1.Button1Click(Sender: TObject);
var
  c: TRttiContext;
  &Type: TRttiType;
  Prop: TRttiProperty;
begin
  Memo1.Clear;
  &Type := c.GetType(TButton);
  for Prop in &Type.GetProperties do
  begin
    if Prop.PropertyType.TypeKind = TTypeKind.tkMethod then
      Memo1.Lines.Add(Prop.ToString);
  end;
end;

Salida:

Código Delphi [-]
property OnClick: TNotifyEvent
property OnContextPopup: TContextPopupEvent
property OnDragDrop: TDragDropEvent
property OnDragOver: TDragOverEvent
property OnDropDownClick: TNotifyEvent
property OnEndDock: TEndDragEvent
property OnEndDrag: TEndDragEvent
property OnEnter: TNotifyEvent
property OnExit: TNotifyEvent
property OnKeyDown: TKeyEvent
property OnKeyPress: TKeyPressEvent
property OnKeyUp: TKeyEvent
property OnMouseActivate: TMouseActivateEvent
property OnMouseDown: TMouseEvent
property OnMouseEnter: TNotifyEvent
property OnMouseLeave: TNotifyEvent
property OnMouseMove: TMouseMoveEvent
property OnMouseUp: TMouseEvent
property OnStartDock: TStartDockEvent
property OnStartDrag: TStartDragEvent
property OnDropDownClick: TNotifyEvent
property WindowProc: TWndMethod
property OnGesture: TGestureEvent