What would be more user-friendly in your opinion?
I would say that it's not "user-friendly" because there's no easily recognizable way of knowing how to use it. The very fact that people are having to look to the forums to find out how to use it is indicative of this.
I would look at the implementation done by Notepad++ - all you have to do is right-click on the tab and select 'Move to other view'. That being said, it goes to vertical display by default and I didn't dig through it to figure out how to change it to horizontal. Personally, I find vertical display way more useful anyway, but I suppose that's a personal preference. Even so, it shouldn't be that difficult to just add a menu item that toggles between vertical and horizontal displays.
Anyway, it's just this one thing that bugs me. Overall, I like Codeblocks a lot, so kudos to the team!
