Event handling method

You can define the event handlers directly on the DayPilot.Scheduler object (which is available as DayPilotComponent.control).

Just note that DayPilotComponent.control is not available before AfterViewInit:

import {Component, ViewChild, AfterViewInit} from "@angular/core";
import {DayPilotSchedulerComponent} from "daypilot-pro-angular";

@Component({
  selector: 'angular2-scheduler-example',
  template: `<daypilot-scheduler #scheduler1></daypilot-scheduler>`
})
export class AppComponent implements AfterViewInit {

  @ViewChild("scheduler1")
  scheduler: DayPilotSchedulerComponent;

  ngAfterViewInit(): void {
    this.scheduler.control.onResourceExpand = (args) => { this.scheduler.control.message("Expanded"); };
  }
}

See also:
https://doc.daypilot.org/scheduler/angular-2/