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

The BtnHeight property assigns the height for the following buttons:

• L1 to L5
• <
• >
• R1 to R6

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