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onBeforeExpand

Description​

Fires before gantt is expanded to full screen

onBeforeExpand: () => boolean;

Returns​

  • result - (boolean) - defines whether the default action of the event will be triggered (true) or canceled (false)

Example​

gantt.attachEvent("onBeforeExpand",function(){
    // any custom logic here    
    return true;
});

Details​

The event is blockable. Returning false will cancel further processing.

note

This event is defined in the fullscreen extension, so you need to activate the fullscreen plugin using the gantt.plugins method. Read the details in the Full Screen Mode article.