API Reference > ui-core > Dialog > MessageBoxProps MessageBoxProps Interface Properties for the MessageBox component Extends CommonProps Methods Name Description onClose(): void Optional onClick event for X button for dialog onEscape(): void Optional 'keyup' event for key Properties Name Type Description buttonCluster DialogButtonDef[] List of DialogButtonDef objects specifying buttons and associated onClick events contentClassName undefined | string Custom CSS class name for the content contentStyle undefined | CSSProperties Custom CSS Style for the content height string | number initial height of dialog. minHeight undefined | number minimum height that the dialog may be resized to. minWidth undefined | number minimum width that the dialog may be resized to. modal undefined | boolean Whether to show background overlay. opened boolean whether to show dialog or not severity MessageSeverity Severity of MessageBox title string | Element Title to show in title bar of dialog width string | number initial width of dialog. 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/core/src/ui-core/messagebox/MessageBox.tsx Line 30 Last Updated: 29 November, 2022