I honestly don't like the look of a few things here and there. Mostly nitpicking though.
- You have a lot of unnecessary empty space at the top and right of the window.
- Only one menu, but a bunch of controls. All of what's under Level, Controls, and View could go into menus.
- What's with the direction buttons in scroll controls? Might the arrow keys be better for that? Also, "Resize" is not lined up well with "Move", and is cut off at the right.
- In Clipdata, there's junk at the end of the option. (I'm guessing characters 0x0D and 0x0A?)
- The scrollbars suggest the map is very large. In that case, the window should be resizeable so us people with tons of screenspace can take full advantage of it. A zoom option might be nice too.
- Also on the topic of screen space, those with multiple monitors would probably appreciate having the interface broken into multiple windows. One for the map, one for the tileset, one for the various boxes scattered about. Then you could have for example the map maximized on one screen and the other windows in various spots on the other. Also, if you design for it, you can fairly easily allow having multiple map windows open. (However, there's little reason to actually do this if you support copy and paste, since someone can just run multiple instances of the program. In this case though, it's important you allow them to hide the tileset/options windows, since they might not want them if the second instance is just for copying from.)
To clarify the last point, one thing I do when I use Lunar Magic is open two instances. In one, I load up an unused level in which I've placed a bunch of commonly-used objects and slopes from that tileset. Then I do my editing in the other, copying and pasting between the two windows. Since the second instance is only there to hold objects, there's no sense having things like the Add Objects window open in it.
This is in C++? If so, very nice work. Are you just loading windows from resources or creating them at runtime, or did you use a premade window system?
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