问题
I have a very specific requirement: the headers in the rich-extended data-table should not be draggable. I searched for the RichFaces classes and found about the rf-edt-rsz class, which can be used to disable the column resizing property, which I did.
But the last thing of the task, disabling drag-n-drop property for the columns is what I'm looking for. If anyone can provide me some assistance on this task, I would be grateful.
来源：https://stackoverflow.com/questions/41549922/in-richextendedtable-tag-how-can-i-set-the-drag-and-drop-property-for-the-colu