DarkSnow:
It looks nice so far.
A few notes:
I see you have a status bar at the bottom with only one piece of data on it, a few useful things would be line number (a very nice thing to have when not showing line numbers by every line) and column position (where you are horizontally on said line).
Also, a very nice thing is having things color coded which your current screenshot does not show, and it isn't listed on the FAQ or anything.
comment and function coloring make things much easier to read.
Also, not sure from the screen shot, the find function, it is very handy to have a multi-file search (or a search for every file in a dir) with results output into a window (such as the debug window or an optional results window?)
Also, those windows do not look resizable/adjustable, though I could be wrong.
Also, a save-all function. and I think Bold/Italics/Underline is sort of unneeded in any code application.
Auto-format function is handy when writing code quickly (like Alt+F8 in MSVC) to do auto tabbing and bracket alignment.
Those are a few of the things I'd look for in a good MDI. Sorry if thats too much work, or is already planned and I overlooked something.
Also, I noticed you comment on not speaking english natively, I'm sure there are plenty of people around would would be willing to help out with english spellings.
Looking forward to seeing this in action!
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Subaru R1e specifications