title: Right click: menu options
body: <p>there is a feature I'd like to implement in my application:</p>
  
  <p>The user right clicks on my picturebox object. Good.
  When that happens, some code of mine executes and will generate a list of options.
  Then a menu appears where the mouse right-clicked, made up of these options.
  When the user clicks on one of these options, the menu is deleted and some code is run given the option index as parameter.</p>
  
  <p>My two problems:</p>
  
  <ul>
  <li>How can I tell when the user right clicks? I can see an event handler for "click", but that includes left clicks....</li>
  <li>How do I create one of these menus? I mean, go ahead and right click something. That's the kind of menu I'm looking for.</li>
  </ul>