How do I add a new button to the toolbar in the Sweet Home 3D applet?I have only partially figured out how I add a button to the toolbar in the applet. After a lot of work, I managed to add a button without functionality. This button was really supposed to split walls. It disappears when I press another button. How do I add a button permanently to the toolbar, and how do I add functionality to a button? By the way, how do I add an icon to such a button?
