By default, the BtnWidth property is -1. If the BtnWidth property is -1, the control gets the default's button width from the system. If the BtnWidth property is greater than 0, it indicates in pixels the width of the button in a horizontal scroll bar. Use the Mode property to specify whether the control is vertically or horizontally oriented. Use the BtnHeight property to specify the width of the buttons in a vertical scroll bar.

The BtnWidth property assigns the width for the following buttons:

• L1 to L5
• <
• >
• R1 to R6

Use the ThumbSize property to define a static size for the control's scrollbox.