title: can't delete tk widgets
body: <p>I want the tk code to delete the following widgets. Is it destroy?</p>
  
  <pre><code>Entry .scW.sf.frame.entry -background "#ffffff"
  Button .scW.sf.frame.Button -command "open"
  
  grid .scW.sf.frame.entry -in .scW.sf.frame -row 17 -column 2 -sticky ""
  grid .scW.sf.frame.Button -in .scW.sf.frame -row 17 -column 3 -sticky "w"
  </code></pre>