title: How to identify the active instance of a form when clicking on its menustrip component
body: <p>I am building a kind of prototype for a MDI application. I have a main form, called mainForm, and some other child forms, all instances of a childForm class. These instances of my childForm class have all a basic MenuStrip, with some form\close, print, etc toolStripMenuItems.</p>
  
  <p>At click time, how can I identify which instance of the childForm class is holding the activated toolStripMenuItem?</p>
  
  <p>EDIT: following dash comment</p>
  
  <p>The pseudo-code looks like this:</p>
  
  <pre><code>Form myNewForm = new Form()
  MenuStrip myNewMenu = new MenuStrip()
  ...
  myNewForm.Controls.Add(myNewMenu)
  myNewForm.MainMenuStrip = myNewMenu
  </code></pre>