Qt manually change the ratio between items in layout

Question

I have two QTreeViews in a QHBoxLayout.

 <layout class="QHBoxLayout" name="lay_disk_content">
  <item>
   <widget class="QTreeView" name="lay_disk_tvA">
 <property name="editTriggers">
  <set>QAbstractItemView::NoEditTriggers</set>
 </property>
   </widget>
  </item>
  <item>
   <widget class="QTreeView" name="lay_disk_tvB">
 <property name="editTriggers">
  <set>QAbstractItemView::NoEditTriggers</set>
 </property>
   </widget>
  </item>
 </layout>

When I resize the QMainWindow the two QTreeViews get resized with an 1:1 ratio between them. Now I would like to manually change it in the running program through dragging the space between them. This is somewhat a standard behavior but I don't get the name of it.

Answer 1

QSplitter