onBeforeTaskChanged

fires after the user has finished dragging and released the mouse button but before the changes are applied

Parameters

id	string|number	the task id
mode	string	the drag-and-drop mode ("resize", "progress", "move", "ignore")
task	object	the task object

Returns

boolean

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

Example

gantt.attachEvent("onBeforeTaskChanged", function(id, mode, task){
    //any custom logic here
    return true;
});

• The event is blockable. Return false to cancel the drag operation.
• The event fires before the onAfterTaskDrag event.

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