PyQt4. How to minimize window on button click?

Question

Python

Hello. I recently started learning PyQt4. I decided to make a window without a frame, with my own buttons.
How do I implement the "collapse" button?

Answer 1

# кнопка: http://pyqt.sourceforge.net/Docs/PyQt4/qpushbutton.html
min = QPushButton()

# минимизация:  http://pyqt.sourceforge.net/Docs/PyQt4/qwidget.html#showMinimized
def minimization():
    min.showMinimized()

# связывание с нажатием: http://pyqt.sourceforge.net/Docs/PyQt4/new_style_signals_slots.html
min.pressed.connect(minimization)