private void CreateHandle()
{
Handle = AddUIComponent <UIDragHandle>();
Handle.size = new Vector2(500, 42);
Handle.relativePosition = new Vector2(0, 0);
Handle.target = parent;
Handle.eventSizeChanged += ((component, size) =>
{
Caption.size = size;
Caption.CenterToParent();
});
Caption = Handle.AddUIComponent <UILabel>();
Caption.text = nameof(NodeMarkupPanel);
Caption.textAlignment = UIHorizontalAlignment.Center;
Caption.anchor = UIAnchorStyle.Top;
Caption.eventTextChanged += ((component, text) => Caption.CenterToParent());
}