I have one more additional question. I am using a Arturia Beatstep in combination with Capture One Pro and Photoshop. So not for much, I use it to convert the rotary knobs and buttons to keyboard shortcuts. Works great!
However now I want to assign a button from my Beatstep to hold down space bar or alt as long as I press down the button. How do I set this up? It seems like the way I have it setup now, it just presses the spacebar or alt for an instant. I want it to hold down (virtual) space bar as long as I am holding down the button.
The trick here is to use Key Down and Key Up output messages instead of just physical key. See the attached screen shots. The only thing I would caution is that if your computer is set up for automatic key repeat, it will repeat just as if you were actually holding the spacebar down. I don’t think Alt repeats however.
You didn’t specify your incoming message so I just picked Note 64