... An elaborate way to hold a wxWindow* as parent of a window, but avoiding
mention of wxWindow* in the member functions of BasicUI::Services, to be defined
next
...so direct uses of wx/app.h may later be removed. That header is one of the
files that is in wxBase, but is not acceptable in "toolkit neutral" code,
which should not directly use any version of an event loop.
... but none of the methods is defined yet.
The intention is to inject dependencies on wxWidgets (or other) toolkit so that
lower-level files have less build dependency on wxCore classes or on the
event loop.
