beforeHide

fires before hiding an item of Toolbar

beforeHide: (id: Id, events: Event) => void | boolean;

Parameters:

• id: string | number - the ID of a toolbar item
• events: Event - a native event object

Returns:

Return false to prevent hiding of a toolbar item; otherwise, true.

Example

toolbar.events.on("BeforeHide", function(id, event){    // your code here    return false;});

Related sample: Toolbar. Events