To make them equal requires 8 white key
graphic files. The current oddly width white keys (used by most DAWs) only require 4.
NOW I get it!!! The "economy version"!!! LOL!!!
It has nothing to do with keeping the grid rows of equal width as I implied in my first post.
I was quite happy, satisfied, and content with your first suggestion!!! Now you've got me all unhappy again!!! So for the sake of saving a few bytes... (only joking!!! LOL!!!).
P.S. Please don't confuse any further i.e. it's taking everything I have just to get over the fact that after fifty years of playing pianos I never actually realised that the black keys are not equally spaced (thanks to mick). Trying to get my head around this particular issue of the key widths in Mixcraft, given the time I probably have left, could very well be haunting me on my death bed!!! LOL!!!