TBitBtn
pl
OnChangeBounds
OnClick
OnContextPopup
OnDragDrop
OnDragOver
OnEndDrag
OnEnter
OnExit
OnKeyDown
OnKeyPress
OnKeyUp
OnMouseDown
OnMouseEnter
OnMouseLeave
OnMouseMove
OnMouseUp
OnResize
OnStartDrag
OnUTF8KeyPress
TCustomBitBtn