Bunch of questions (too many for separate posts)

[noisneil]

@jdelozier

I could make a macro so that if a hotkey is pressed, it will look for the master volume slider (click & drag at found image) in the DAW I'm in (let's say Logic) and control it however I want. But how do I program the macro so that if the hotkey is held, it gradually controls the slider depending on how long I hold the hotkey?

Firstly, I would use relative midi from KM to control the volume slider, via Logic's Controller Assignments window. Secondly, if you want to do something repeatedly while you hold a hotkey, take a look at THIS as a starting point.

Side-note, if you have an endless encoder, you can try using this rather than KM; a nicer experience, perhaps. Personally, I use a nObcontrol with a Stream Deck and I think it's an awesome combo.

@jdelozier

how do I program a macro that when I select a note in a MIDI region, it shortens/stretches it into a specific duration?

Here's a quick macro that sets the selected note's duration to 1/16th, which should get you started:

Selected Note - Set Length to 16th.kmmacros (44 KB)

Macro screenshot

@jdelozier

it trims the selected region according to where the playhead has been

Forget about Logic "remembering" where the playhead has been and do this instead:

Either set your locators to the length you'd like to crop the region to or use the marquee tool to make your selection. Then use Logic's Crop Region outside Locators/Marquee Selection function. Personally, I prefer the marquee tool, as I have it bound to my right mouse button, so it's just a single click-drag-release and then one hotkey.