HI!, im building a tree and a grid where i need to drag from grid to tree.
I need to catch the event “before drop” on tree…because i need to validate the the Tree Node where tjhis Drop is going to happend.
How can i solve this?
Regards,
You can use next code
tree.attachEvent(“onDragIn”,function(sid,tid){
//this event occurs before drop, when item dragged over potential target
// tid - id of tree item or null if item draged over free space of tree
if (!some_rule_check(tid)) return false; // block d-n-d
return true;
});