Use QWidget as a base for qtViewer3d

Author: adam-urbanczyk

src/Display/qtDisplay.py

@@ -35,12 +35,12 @@
 log = logging.getLogger(__name__)
 
 
-class qtBaseViewer(QtOpenGL.QGLWidget):
+class qtBaseViewer(QtWidgets.QWidget):
  ''' The base Qt Widget for an OCC viewer
     '''
 
  def __init__(self, parent=None):
- QtOpenGL.QGLWidget.__init__(self, parent)
+ super(qtBaseViewer,self).__init__(parent)
  self._display = None
  self._inited = False