title: Adding a Custom Widget to Qt Q_PROPERTY -- or -- CustomWidgetObjectNames as a property in qt designer custom widget
body: <p><strong>CustomWidgetObjectNames</strong> = design-time objects.
  <img src="https://i.stack.imgur.com/0WpQa.jpg" alt="enter image description here"></p>
  
  <pre><code>Q_PROPERTY(QList&lt;CustomWidgetObjectNames *&gt; points READ getpoints )
  
  QList&lt;CustomWidgetObjectNames *&gt; getpoints() const {
      return sampleobjectlist;
  }
  
  private :
  QList&lt;sampleobjectlist *&gt;
  </code></pre>