Function WindowGetViewport

src/openrct2/interface/Window.cpp:897–905

    }

    Viewport* WindowGetViewport(WindowBase* w)
    {
        if (w == nullptr)
        {
            return nullptr;
        }

        return w->viewport;
    }

    // TODO: declared in WindowManager.h; move when refactors continue
    Ui::IWindowManager* Ui::GetWindowManager()