Qt for Python (PySide/Shiboken)

Hi. Based on the project https://github.com/Wanderson-Magalhaes/Toggle_Burguer_Menu_Python_PySide2 I'm trying to do without using QtDesigner. My code is this below: https://gist.github.com/CoutinhoElias/1f84a6b496becc9381630a4c5fdd9270#file-main-py-L22 I'm trying to do the frm_left_menu on line 74 https://gist.github.com/CoutinhoElias/1f84a6b496becc9381630a4c5fdd9270#file-main-py-L74 change size by clicking the btn_toggle button on line 99 https://gist.github.com/CoutinhoElias/1f84a6b496becc9381630a4c5fdd9270#file-main-py-L99 It is working in parts: 1 - The size of the frm_left_menu decreases but the buttons do not accompany it (They remain the same size) 2 - If I clicked again it should invert, that is, return to the original size of 70 Can someone help me?