Function start_event_loop_qt4

IPython/lib/guisupport.py:138–147

Start the qt event loop in a consistent manner.

(app=None)

        return False

def start_event_loop_qt4(app=None):
    """Start the qt event loop in a consistent manner."""
    if app is None:
        app = get_app_qt4([""])
    if not is_event_loop_running_qt4(app):
        app._in_event_loop = True
        app.exec_()
        app._in_event_loop = False
    else:
        app._in_event_loop = True

#-----------------------------------------------------------------------------
# Tk