Hi,Sir.

Now I've gotten a trouble that I can't do the “Box Zoom” in the viewport.
How can I do the Box Zoom using Houdini13?

As described in the documentation,I dragged Left mouse pressing Ctrl+Alt in the viewport.
I sure I can do it in the network view.
When I do it in the viewport,Houdini shows “No valid construction plane or primitive target to zoom on”.

Can you do it well?
Please teach me the way.

Try turning off the use of the Alt key for navigation in the main preferences.

Even if I turn off “Use Alt Key for View Controls” checkbox,
this situation never changes
My operation is wrong?

Sorry, I don't have Houdini handy right now to try. But try making sure you're in the “View” tool (hit Esc with your mouse in the viewport).

This feature seems to be broken. We will submit a bug for it.

Thank you for your checking.
I got it.
I think so.