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#------------------------------------------------------------------------------
# Copyright (c) 2007, Riverbank Computing Limited
# All rights reserved.
#
# Copyright (c) 2017, Enthought, Inc.
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license. However, when used with the GPL version of PyQt the additional
# terms described in the PyQt GPL exception also apply.
#
# Author: Riverbank Computing Limited and Enthought developers
#------------------------------------------------------------------------------
import sys
from traits.trait_notifiers import set_ui_handler, ui_handler
from pyface.qt import QtCore, QtGui, qt_api
from pyface.base_toolkit import Toolkit
from .gui import GUI
if qt_api == 'pyqt':
# Check the version numbers are late enough.
if QtCore.QT_VERSION < 0x040200:
raise RuntimeError(
"Need Qt v4.2 or higher, but got v%s" % QtCore.QT_VERSION_STR
)
if QtCore.PYQT_VERSION < 0x040100:
raise RuntimeError(
"Need PyQt v4.1 or higher, but got v%s" % QtCore.PYQT_VERSION_STR
)
# It's possible that it has already been initialised.
_app = QtGui.QApplication.instance()
if _app is None:
_app = QtGui.QApplication(sys.argv)
# create the toolkit object
toolkit_object = Toolkit('pyface', 'qt4', 'pyface.ui.qt4')
# ensure that Traits has a UI handler appropriate for the toolkit.
if ui_handler is None:
# Tell the traits notification handlers to use this UI handler
set_ui_handler(GUI.invoke_later)
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