API Reference > ui-framework > Widget > ToolWidgetComposerProps ToolWidgetComposerProps Interface Properties for the ToolbarComposer React components Extends CommonProps Properties Name Type Description cornerItem undefined | ReactNode Optional Corner Item which for most stages is the BackstageAppButton used to toggle the display of the backstage menu. horizontalToolbar undefined | ReactNode Optional Horizontal Toolbar verticalToolbar undefined | ReactNode Optional Vertical Toolbar Inherited properties Name Type Inherited from Description className undefined | string CommonProps Custom CSS class name style undefined | CSSProperties CommonProps Custom CSS style properties Defined in ui/framework/src/ui-framework/widgets/ToolWidgetComposer.tsx Line 74 Last Updated: 29 November, 2022