Yet another duplicate. They should be merged at some point.

http://docs.wxwidgets.org/3.1.0/classwx_box_sizer.html

http://docs.wxwidgets.org/3.1.0/classwx_scrolled.html#a76286e2efa55d0ba85d37106a44a9401

http://docs.wxwidgets.org/trunk/classwx_static_box_sizer.html

http://docs.wxwidgets.org/trunk/classwx_flex_grid_sizer.html

http://docs.wxwidgets.org/trunk/classwx_static_text.html

http://docs.wxwidgets.org/3.1.0/classwx_check_box.html

(With the current implentation, "Draw paths" would make more sense, but the plan is to draw the selected path always, so the option would lie if it was called "Draw paths" and disabled.)

Issue (1): So the tooltip of "Draw all paths" is "Draw all paths"? Not sure how that helps :D Also would be the first atlas tooltip that does that, so it should have some kind of sentence instead.

Issue (2): Why wxEmptyString here and adding a wxStaticText before? All checkboxes in atlas besides the ones from the actor editor I could never observe have this issue, but this doesn't mean we have to repeat the mistake.

Besides adding an element which wouldn't strictly be needed, we also get this bug when selecting the checkbox, adding some selection highlight around the empty string:

Fixing (2) fixes the observation on the image.

The wxSizerFlags().Expand() flag doesn't seem to do anything, so don't see a reason to add it.

(Could be enabled by default, but it's ok to have it false too, maybe less annoying if there are many paths)

(Could perhaps store the previous setting, but not important)

Observable.h inclusion not used

(Would be nice to not have empty functions, but probably better to keep the inherited ones virtual and I guess these here will be filled in the future)