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Apr 4, 2024
Disable Dragging Elements on Selection with pyRevit startup script
We all know that feeling when we've accidentally dragged a 3D element in Revit. It's not fun especially if we haven't even noticed it. So let's find a solution
How to stop dragging elements?
In Revit, there is a selection option menu that includes several toggles. One of these toggles is called "Drag Elements on Selection" among others.
We can turn it off, and problem sort of goes away.
However, many BIM Managers face an issue that, not every user deactivates this toggle. And it can lead to accidents by dragging elements, especially among less experienced Revit users. While most of the times it's not harmful, sometimes users might not even realize it and later you find an element floating in space because of that.
Solution
What if there was a way to automatically disable this setting by default, whenever users open the Revit Application? And this can actually be achieved by using startup script in pyRevit.
It's a script that will be executed every time Revit application is started and loads pyRevit. You can do a lot of things with it, but let's focus on this particular settings.
pyRevit start up script
To better understand startup script, I would recommend you to reference the pyRevit Dev Docs:
After reading the documentation you will learn that you just need to create startup.py
file in the root folder of your extension (next to lib
, and hooks
folders if you have them already).
Script to Disable Drag Elements
Once you've created the file, we need to write a script that will change these settings, and it's super simple. We need to use SelectionUIOptions Class to disable these options.
And it's not complicated to use, here is a snippet you can paste in your startup.py
script to get these options and change them.
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