title: MATLAB: Modify getline() to remove 'end input on double-click' functionality
body: <p>The matlab function getline (image processing toolbox) returns the position of a polyline (which has previously been defined with the cursor) either on a double-click or on pressing the return key or spacebar.  </p>
  
  <p>Due to my butter-fingers and accidentally double-clicking I want to remove the ability to end on a double-click. </p>
  
  <p>What part do I need to change, or what functions should I be looking out for, I can't find out how a double click is even defined in matlab.</p>
  
  <p>Cheers!</p>