How do you track the pressure on the keyboard in the background mode and open the PyQT window?

[baileigh]

I have a method that opens a new window. I tried to call him with the library. keyboard ♪ keyboard.add_hotkey()but for some reason, the program is flying.

If you try to open this window not through the keyboard, it's through. QPushButton It's all right.

I have the task of opening a subsidiary window of the application with a combination of clavicle, and not in the main window.

import sys
import keyboard
from PyQt5.QtWidgets import *
class App(QWidget):

def init(self):

super().init()

self.initUI()
def initUI(self):
    self.setWindowTitle('Image')
    self.setGeometry(50, 50, 640, 480)
    self.but = QPushButton(self)
    self.but.setGeometry(0,0, 300,300)
    self.but.clicked.connect(self.ran)
    self.App = App2()
    keyboard.add_hotkey("ctrl", self.ran)

def ran(self):
    self.App.show()

class App2(QWidget):

def init(self):

super().init()

self.initUI()
def initUI(self):
    self.setWindowTitle('Image')
    self.setGeometry(0, 0, 100, 100)

if name == 'main':

app = QApplication(sys.argv)

w = App()

w.show()

sys.exit(app.exec())

[elysha]

The possible solution is to use signals:

import sys
import keyboard
from PyQt5.Qt import *
class KeyBoardManager(QObject):

keySignal = pyqtSignal(str)
def start(self):
    keyboard.add_hotkey(
        "Ctrl + A", lambda: self.keySignal.emit("Ctrl+A"), suppress=True)
    keyboard.add_hotkey(
        "Q", lambda: self.keySignal.emit("Q"), suppress=True)

class App2(QWidget):

def init(self):

super().init()

self.initUI()
def initUI(self):
    self.setWindowTitle('Image')
    self.setGeometry(410, 580, 100, 100)

class App(QWidget):

def init(self):

super().init()

self.initUI()
    manager = KeyBoardManager(self)
    manager.keySignal.connect(self.ran)
    manager.start()

def initUI(self):
    self.setWindowTitle('Image')
    self.resize(400, 300)
    self.but = QPushButton(self)
    self.but.setFixedSize(100, 100)
    self.but.clicked.connect(lambda: self.ran('btn'))
    
    self.app_2 = App2()

keyboard.add_hotkey("ctrl", self.ran)
def ran(self, value=None):
    if value == 'btn':
        print("Вы нажали кнопку")
    elif value == 'Q':
        print("QApplication.quit()")
        QApplication.quit()
    elif value == 'Ctrl+A': 
        print("Вы нажали 'Ctrl+A'")        
        self.app_2.show()
        
def closeEvent(self, event):
    self.app_2.close()

if name == 'main':

app = QApplication(sys.argv)

w = App()

w.show()

sys.exit(app.exec())