Experiment using the FxPlug Undo API

[latenitefilms]

Currently I can't seem to get it working in Final Cut Pro. In the FxPlug samples, the only time it's used is in FxDynamicRegistration within parameterChanged.

[latenitefilms]

I've reached out to Apple for advice on this... we'll see if/what they come back with...

[latenitefilms]

Apple confirms:

Yes, the Undo API should work in Final Cut Pro. (That comment in the header may be very old - from FCP 7, I think.) When are you trying to use it? It should work within a start/endAction: block, as well as during -parameterChanged::, and also during the selector for a push button and during OSC mousing and analyzing a frame. It will not work at other times.