Scroll wheel doesn't scroll (pan) but zooms

That's intentional. It used to scroll up/down but more people wanted the in/out way. Hold right-mouse to pan.

Note also that you can edit your gpcb-menu.res to make the scroll wheel do anything you want :-)

Thanks - I didn't know that! In general, the right and middle buttons do nothing in PCB, so I didn't think to use them!

As a way to make this more discoverable, might I suggest one of:
  - add a "mouse bindings" section to the info menu.
  - add an "xfig" style icon to the top right, that shows what each button will do in this context.
  - add a settings pref.

Also, I really really prefer the middle button to scroll (I use a thinkpad keyboard, where btn_2 + drag = hor/vert scroll), so I'd love to see a preference in the settings menu.

Lastly, the pan-with-right-button is implemented in the pdf-viewer way where one is dragging the board underneath the viewport, rather than scrolling the window. I see the logic, but the familiar way would make more sense to me.

My ideal setup would be:

   Z / Shift-Z = zoom in/out (also, for compatibility, Ctrl + mousewheel)
  Mousewheel: horiz/vert window scrolling
  Right mouse button - drag the board under the viewport.

Thanks again for your help.

Feel free to add any of those options :-)

The zoom behavior is consistent with other PCB tools on the market, as well as the Gimp and most drawing programs.

But I agree, this should be an option. And we should also have dual-axis scroll capability.

moving to the feature request tracker for "easier configuration for scroll wheel"