title: Inno Setup - Display message if "I Do Not Accept" radio button is selected
body: <p>I am using a variation of <a href="https://stackoverflow.com/questions/34592002/how-to-create-two-licensefile-pages-in-inno-setup">How to create two LicenseFile pages in Inno Setup</a> to display a second license page in an Inno Setup-based installer. Unlike that code, I am not selecting a default. So these radio buttons appear, with no selection:</p>
  <pre><code>[ ] I accept the agreement
  [ ] I do not accept the agreement
  </code></pre>
  <p>If the user selects the second radio -- <em>I do not accept the agreement</em> -- I would like to show a custom message to the user (message window). I do not need it to allow <em>Next&gt;</em> to be clicked still or other workflow. Just show a message when they click do not accept radio.</p>