By default, the TollBarSize property is -1, so the control automatically sizes the toolbar for the best fit. If the TollBarSize property is 0, the control displays no toolbar. The TollBarSize property specifies the size / visibility of the control's toolbar. The ToolBarEvent event notifies your application that the user selects, edits, checks or un-checks an item in the control's toolbar.  The ToolBarAnchor property gets or sets the edge of the control to which the toolbar is bound and determines how the toolbar is resized with its control.  The ToolBarItems property defines the control's toolbar format. The ToolBarHTMLPicture property adds/removes custom-size pictures to be shown on the control's tollbar. The ToolBarImages / ToolBarReplaceIcon methods defines the icons to be displayed on the control's toolbar. The ToolBarBorderSize property specifies the size of the border of the control's toolbar.

The Background(exToolBarAppearance) property specifies the visual appearance / background color of the control's toolbar. The Background(exToolBarPopupAppearance)  / Background(exToolBarLocalAppearance) property specifies the visual appearance / background color of the popup to be shown from the control's toolbar.

The following screen shot shows the default control's toolbar:

The visual appearance of the control's toolbar depends on your current theme / windows.