There is a reason why one would want that but that has more to do with managing all widgets in a single framework class accessible from anywhere in your code - can be nifty. And the HUD has some cool functionality you can’t get anywhere else.
Because now I have to change the mouse cursor behaviour on each of my widget bps
You’d still need to set it up for every widget anyway, I think.
Once you flag the root’s cursor as None, the children (buttons, border, text) will respect that or can override it. So you could play with this programmatically:
Give each widget an interface, fetch them all and set their cursor to none. Or call it for every widget that you create. But that’s already a lot of clicking.
Perhaps you could create an empty, blank widget with the cursor set to none and have all other widgets inherit from that:
This will now become a default setting for the root. But that’s as much clicking as setting it manually.
Another way:
Create a widget that is transparent and use it as a cursor.
At this point I’m not sure if you do not want mouse-widget interaction or simply want to hide the cursor but be able to interact with widgets. Perhaps you can just make the root not hit testable:
In which case the inheritance method mentioned above would work well.