title: JavaFX: How to adjust/maximize Control/Region widths on resizing a window?
body: <p>When I resize a JavaFX window, I get the red highlighted spaces
  <img src="https://i.stack.imgur.com/udxNK.png" alt="enter image description here"></p>
  
  <p>at the bottom and right. I’ve tried a lot in the SceneBuilder to auto-maximize the “Bottom Left Control” by specifying a larger height &amp; width alongside a “Pref Height” and “Pref Width” but nothing worked.</p>
  
  <p>Of course I could register a resize listener that resizes the controls at runtime imperatively but that’s not really a nice solution. Is there a declarative way where this magic is done behind the scenes and where I have to merely set some flag to accomplish this?</p>