onBeforeEventDrop

fires before an event is dropped

boolean onBeforeEventDrop(object context,object event);

context	object	an object with drop context
event	object	HTML event

boolean

returning false will block drop operations

$$("scheduler1").attachEvent("onBeforeEventDrop", function(context, e) {
  // your code here
});

Details

The context object contains the following fields:

event (object) - an event object
id (string) - event ID
$resize (boolean) - optional. true if event is resized in Day mode
from (object) - information about source of Drag-n-Drop
node (node) - a node of the dragged event
target (node) - optional. Target of drop event (only in Day and Week modes).

Returning false from the event handler will block drop operations and their further processing.

$$("scheduler1").attachEvent("onBeforeEventDrop", function(context, e) {
  return false;
});