ComCtrls

Use TTrackBar to put a track bar on a form. A track bar represents a position along a continuum using a slider and, optionally, tick marks. A track bar can also display a selected range marked by triangular ticks at the starting and ending positions of the selection. 

During program execution, the slider can be moved to the desired position by dragging it with the mouse or by clicking the mouse on the bar. To use the keyboard to move the slider, press the arrow keys or the Page Up and Page Down keys. 

TScrollBar 

Specialized Input Controls 

Track Bars