title: Qt - Adding dynamic controls to a placeholder
body: <p><strong>I am looking for the best way to dynamically swap in and out controls within Qt on a predefined layout created from the Qt Designer.</strong> </p>
  
  <p>I come from a ASP.NET background, where often I would use the idea of a "placeholder" for this type of task and add controls as children at runtime.</p>
  
  <p>Does Qt support this type of functionality or something similar?</p>