setContentAspectRatio on window

• Richard Bannister setContentAspectRatio on window Jan 06 2009, 19:26
  Folks,
  
  I'm using setContentAspectRatio to constrain the dimensions of a
  window to either 4:3 or 16:9.
  
  However, I'd also like the ability to subsequently remove the
  constraint altogether. If I'm reading the API right then I should be
  able to do a setContentAspectRatio with a NSSize specifying 0, 0.
  However, if I do this, any further attempt to resize the window causes
  it to vanish outright.
  
  Am I going mad, or have I found a bug?
  
  Richard