const Render::TreeRootDisplayHandle& GetDisplayHandle() const;
GetDisplayHandle returns a display handle that should be passed to the render thread and which is used for rendering of text objects. Typically the render thread will take the following steps each frame:
- Call NextCapture() on the handle to grab most recent tree snapshot.
- Call HAL::Draw to render the movie.
The Render::TreeRootDisplayHandle used for display of text objects.