DayPilot.Scheduler.onGridMouseDown

This event lets you customize the JavaScript Scheduler grid mouse down behavior.

This is the default setting:

• Standard mouse down: By default, the mousedown event starts time range selecting (if it is enabled).

• Shift + mouse down: If a rectangle selection is active (rectangleSelectHandling is set to a value other than "Disabled") and the users hold a Shift key, rectangle selecting is activated.

Related demo:

• http://javascript.daypilot.org/demo/scheduler/eventmultiselecting.html

Declaration

DayPilot.Scheduler.onGridMouseDown(args)

Parameters

• args.action ("None" | "RectangleSelect" | "TimeRangeSelect") - action to be started

• args.button ("left" | "right") - the active mouse button (since version 2018.4.3438)

• args.ctrl (boolean) - status of the Ctrl key

• args.end (DayPilot.Date) - the end of the cell under the mouse position (available since 2025.4.6746)

• args.meta (boolean) - status of the Meta key

• args.originalEvent (Event) - the original mousedown event object

• args.preventDefault() - cancels the action (sets the args.action to "None")

• args.row (DayPilot.Row) - the row under the mouse position (available since 2025.4.6746)

• args.shift (boolean) - status of the Shift key

• args.start (DayPilot.Date) - the start of the cell under the mouse position (available since 2025.4.6746)