Thanks Daniel for the tip.
I tried gtk_init() but it looks like it is not enough for mm version.
Right, I was half awake, and really meant Gtk::Main::init() or whatever the mm wrapping of that C function is.
However, using a Gtk::Application is the preferred way now anyway. :-)
Instead, I called Gtk::Application::run() and it works. The code is
follow:
auto app = Gtk::Application::create("mytest");
Gtk::Box box;
app->run();
BOOST_TEST(box.get_homogeneous() == false);
I also substituted Gtk::Box with my custom widget and everything seems
works just fine.
Great! Probably the run() isn't even needed, as I think the creation of the GtkApplication will suffice to initialise things far enough that you can instantiate widgets and read/write properties.
Of course, if you want to test stuff that requires widgets to actually be realised, etc., then you will indeed need to pack them into a toplevel and run the application in order to make that happen.
