title: How can i get the JFrame (parent) of a JInternalFrame?
body: <p>I'm doing a program like Gimp and i have a <code>JInternalFrame</code> for change the color of shapes and
  i paint the shapes in other <code>JInternalFrame</code> so i have to get my frame to get the <code>JInternalFrame</code>
  where i want to paint. I don't know how to get the parent of the colors <code>JInternalFrame</code> to change the color in the <code>JInternalFrame</code> where I'll paint.</p>