property Options: TPaintBoxOptions;
type TPaintBoxOptions = set of (pboWantArrowKeys, pboAutoFocus);
This property controls additional options of the paint box and its descendants:
pboWantArrowKeys - indicates whether the keyboard arrow keys appear in OnKeyDown event;
pboAutoFocus - indicates that the paint box automatically captures keyboard focus when clicked with the mouse. The focus is acquired before the OnMouseDown event is fired.