title: Resize borderless window on bottom right corner
body: <p>I'd like the user to resize a borderless window on bottom right corner like I can resize the autocomplete window of the combobox control.</p>
  
  <p>I cannot find the properties to configure a form that way.</p>
  
  <p>Maybe someone could help me on the problem.</p>
  
  <p>An image could be found here:</p>
  
  <p><img src="https://i.stack.imgur.com/hJCzo.png" alt="enter image description here"></p>