how to use non-block visualization in open3d gui?

[blackjacket996]

Checklist

• [X] I have searched for similar issues.
• [X] For Python issues, I have tested with the latest development wheel.
• [X] I have checked the release documentation and the latest documentation (for main branch).

My Question

Hi~I've create a window using open3d.visualization.Visualizer.create_window() and add some TriangleMesh or Pointclouds in it, now I wanna add the window to gui to make more interactive function, but I find open3d.visualization.gui.Application.add_window() needs a window that is open3d::visualization::gui::Window type as a input, how can I make that achieved?

[blackjacket996]

I wanna update the geometry in every loop in my function, so I need to use update_geometry() and update_render() in open3d.visualization.Visualizer. Is there any other same or similar function that can be used?