title: How to use QGridLayout to incorporate proportional sizes?
body: <p>Here's the code I'm using to layout the widgets on my window :</p>
  
  <pre><code>    widget = QWidget()
      self.setCentralWidget(widget)
  
      layout = QGridLayout()
  
      map_group_box = QGroupBox()
      map_group_box.setTitle('Navigation')
  
      panel_group_box = QGroupBox()
      panel_group_box.setTitle('Instrument Panel')
  
      status_group_box = QGroupBox()
      status_group_box.setTitle('Status')
  
      layout.addWidget(map_group_box, 0, 0, 2, 1)
      layout.addWidget(panel_group_box, 0, 1, 1, 1)
      layout.addWidget(status_group_box, 1, 1, 1, 1)
  
      widget.setLayout(layout)
  </code></pre>
  
  <p>This is the result :</p>
  
  <p><a href="https://i.stack.imgur.com/ahhNl.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ahhNl.png" alt="Result 1"></a></p>
  
  <p>I would like the left column to be twice as wide as the ones on the left. How do I achieve that ? I have tried QSplitters, but they look so damn ugly on macOS.</p>