`TMUIDrawPanel`
pl		OnDrawObject
pl		OnMouseDown
pl		OnMouseUp
pl		OnDblClick
pl		OnMouseWheel
pl		OnMouseMove
pl		OnMouseLeave
pl		OnKeyDown
pl		OnKeyUp
pl		OnOpenContextMenu

`TMUIArea`
pl		OnClick
pl		OnSelected

`TMUIWithParent`

`TMUINotify`

`TMUIRootClass`