Quite a while ago I had brought up the idea to parse the description of an active tool (like i.e. the Extrude tool).
(see https://plugincafe.maxon.net/topic/11186/confusing-tooldata-content/18).
The information provided in that topic was really helpful.
But now I am wondering how to to find out if this MDATA_APPLY button is disabled.
EDIT:
I have digged somewhat deeper in available discussions and examples, and it seems I don't really need to know the state of the MDATA_APPLY button ... but I am still curious how one would proceed to find out when that button is grayed out or not.