Hello,
I'd like to disallow swapping columns from one group to another group. While dragging a column over a forbidden group the "not allowed"-sign should be shown.
In the event "BeforeColPosChanged" I'm able to cancel the action (e.cancel = true), but nevertheless the red arrows are shown beforehand (seems to be possible, although it is not).
How can I show the "not allowed"-sign instead ?
sorry, didnt't see these properties at once:
layout.Override.AllowColSwapping = AllowColSwapping.WithinGroup;
layout.Override.AllowColMoving = AllowColMoving.WithinGroup;
This works.