title: How do I set a background color for the whole window of a Qt application?
body: <p>Does anyone know how one would be able to set a background color for the whole window of a Qt application?</p>
  
  <p>So far I am using stylesheets but can only figure out how to assign a background color to a widget such as <code>QGroupBox</code> or <code>QPushButton</code>. Basically, if I want a black background how would I make it seamless without any borders of the original background?</p>