- arrangevoid arrange(int rw, int rh) 
- rw and rh are recommended (hint) sizes that the parent is allocating to the child,
 but there is no obligation to follow them. 
- handleMouseDownvoid handleMouseDown(int x, int y, MouseButton button) 
- Undocumented in source. Be warned that the author may not have intended to support it. 
- handleMouseMovevoid handleMouseMove(int x, int y, MouseButtons buttons) 
- Undocumented in source. Be warned that the author may not have intended to support it. 
- handleMouseUpvoid handleMouseUp(int x, int y, MouseButton button) 
- Undocumented in source. Be warned that the author may not have intended to support it. 
- rearrangevoid rearrange() 
- Called when a child's dimensions change, to allow the size change to bubble up to parents. 
- rendervoid render(Renderer r, int x, int y) 
- Undocumented in source. 
Root control class.