'How to set focus to the old window on button click in PyQt5 Python?

My Current Project is to create a On Screen Keyboard for my personal usage with my personal functionality. I made gui and primary function in PyQt5 with Python. I managed to type the letter on button click with pyautogui.write() method. But the problem is, where I want to type there is no focus. suppose I want to write on chrome's address bar or any other input field on my monitor. when I click on button to type a letter, chrome lost focus. I want to set focus to the old window while press on any button. I searched on google about this but didn't found any answer. How can i set focus to old window? or is there any better way to type on focus lost state?



Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source