Add ability to middle-click and drag via a modifier key. Used in many CAD applications and games

[blamarche]

The ability to click and hold the middle button/wheel then drag around is a key feature in many applications and games. Currently using three finger click and then add a fourth finger it can be done, but it would also be useful to be able to do it by just holding a key such as fn and single-click-dragging

[danieltsoftware]

Any updates on this? This issue was posted a year ago.

[danieltsoftware]

I just tried it and I can see that it is implemented in the app. However, I downloaded the source code and can't find where the code for holding the option key is. Could you please point me to the part of the code where it's at so I can swap the default and modifier behaviors? I need this for Unity 3D and only need the drag / pan mode. Thanks!