This sounds like a good idea! I'd definitely prefer to use buttons for a screenshot in case I really need one.
As for the folder.. What about straight into the SD root without any folder? But I think the best would be to implement an option for a custom path. For example, pressing Select or something like that when 3DSident is open where you can choose or type in a path. But I don't know how complicated that would be to implement.
And I have a suggestion for the png files. How about using date and time in the file name when they're created? Especially since you want to change to the button method so one might create more than one screenshot.
It's not too complicated, but it'll require more time than I have, so I won't be doing the whole select your own path feature. (I may never do it, so don't take my word lol) However, in the coming days, I'll be using the L+R combo to take screenshots, and I'll use your idea with using the date and time. If I do put these in the SD root, it will clutter up the root of your card, so it'll be better to use the screenshots folder, which the 3DS uses. So you won't require a /3DS/ folder anymore.
It's actually "i?0" but yea, .cia version and the non-GUI .cia version shows it fine. I mean it's nbd, just figured I'd try to help squash bugs. love the app!
Lol, I thought you meant the .cia one all along?
Of course the .3dsx one doesn't work properly, I have already stated that many times and even discontinued any support for the 3dsx versions, thanks for reporting anyway.