Function get_app_qt4

IPython/lib/guisupport.py:112–120

Create a new Qt app or return an existing one.

(*args, **kwargs)

#-----------------------------------------------------------------------------

def get_app_qt4(*args, **kwargs):
    """Create a new Qt app or return an existing one."""
    from IPython.external.qt_for_kernel import QtGui
    app = QtGui.QApplication.instance()
    if app is None:
        if not args:
            args = ([""],)
        app = QtGui.QApplication(*args, **kwargs)
    return app

def is_event_loop_running_qt4(app=None):
    """Is the qt event loop running."""