Using widgets intregrated. PyQT with Tkinter
I make a workaround that solved the problem. I used python subprocess for call the PyQT instance and the option QtCore.Qt.WindowStaysOnTopHint for app running on top of tkinter. It´s work.
but the best solution is to create a thread in python and call PyQt in this thread. In this case it is possible to pass an instance of tk for PyQt and make communication between the two. It´s work too. It´s fine.