Hi Afandi,
If I understand the issue correctly, you need to hide the entire message when a node is dragged over its root element. When the node is dragged over elements that are on the same level, the message even with a 'plus' sign should be visible.
If this is the case, you could use the same approach as described in my previous reply, but with a different selector.
Here is the
modified Dojo example.
If you need to hide only the icon, you could remove the parent() method, as it is below:
In case you need to hide the '+' icon while dragging over the entire TreeView, you could use only css, as there will be no need to check for the parent.
If I did not understood the requirements correctly, could you please send us more details about the scenario, so we could provide appropriate assistance.
Regards,
Neli
Progress Telerik