Use the ToolTipWidth property to specify the width of the tooltip window. By default, the ToolTipWidth property is 196 pixels. The height of the tooltip window is computed based on the tooltip's description. Use the AddKeyword method to assign a tooltip to a keyword. Use the ToolTipOnTyping property to display the keyword's tooltip while typing in the control. Use the ToolTipFont property to assign a font for the control's tooltip. Use the Background(exToolTipAppearance) property indicates the visual appearance of the borders of the tooltips. Use the Background(exToolTipBackColor) property indicates the tooltip's background color. Use the Background(exToolTipForeColor) property indicates the tooltip's foreground color.