The AScroll bar is a rectangular window that contains a scroll box and two scroll arrows. Scroll bars provide easy navigation through a long list of items or provide for selecting a value out of range of values. They can also provide an analog representation of the current position in the list of items.
The value can be changed by dragging the scroll box or clicking on the arrows or by using the keyboard arrow keys, page down page up (similar to clicking between the arrow and the box), home and end keys. The scroll box size is proportional and determined by Min, Max and the LargeChange properties.