PyQt5嵌入控制台应用焦点问题：键鼠输入无响应

环境：Windows 10系统、Python 3.9 + PyQt5

使用QtGui.QWindow.fromWinId(<window_handle>)函数已成功将VNCviewer、WinSCP等软件嵌入Python GUI，但嵌入控制台应用（如PuTTY SSH会话、命令提示符）时，该窗口无法接收键鼠输入——PyQt窗口始终处于焦点状态，嵌入窗口无法获取焦点。

代码示例 #

import sys
import os
import time
import pygetwindow
from PyQt5.QtWidgets import QApplication, QMainWindow, QWidget, QGridLayout
from PyQt5 import QtGui

class MainWindow(QMainWindow):
    """
    Launches the terminal
    """
    def __init__(self, command: str, substring: str):
        super(MainWindow, self).__init__()

        widget = QWidget()
        layout = QGridLayout(widget)
        self.setCentralWidget(widget)

        win = latchToWindow(command, substring)
        hwnd = win._hWnd
        self.window = QtGui.QWindow.fromWinId(hwnd)
        self.windowcontainer = self.createWindowContainer(self.window, widget)

        layout.addWidget(self.windowcontainer, 0, 0)


def latchToWindow(winLaunchCommand: str, gettitle: str):
    """
    Used when there are additional dialogs and you need to grab a specific one
    :param winLaunchCommand:
    :param title:
    :return:
    """
    makeNewWindow(winLaunchCommand)
    while True:
        windows = pygetwindow.getAllWindows()
        for win in windows:
            tempTitle = win.title
            if gettitle in tempTitle:
                return win
        time.sleep(0.1)

def makeNewWindow(winLaunchCommand: str):
    """
    Makes a new window with that command, and returns that window
    :param winLaunchCommand:
    :return:
    """
    windows = pygetwindow.getAllWindows()
    os.popen(winLaunchCommand)
    while True:
        newWindow = pygetwindow.getAllWindows()
        if len(newWindow) != len(windows):
            for win in newWindow:
                if win.title != "":
                    if win not in windows:
                        time.sleep(0.05)
                        return win

if __name__ == '__main__':
    app = QApplication(sys.argv)
    app.setStyle("fusion")
    
    # 无法响应键鼠输入
    form = MainWindow("start cmd.exe", "cmd.exe")

    # 可以正常响应键鼠输入
    # form = MainWindow("putty.exe", "PuTTY")
    form.setWindowTitle('Embedded Python Terminal')
    form.show()
    app.exec()

问题截图 #

补充说明 #

已定位问题根源：PyQt5窗口始终占据焦点，需要实现点击嵌入窗口时，让该嵌入窗口获取焦点、PyQt应用暂时失去焦点。尝试过QTBUG-51538中的最后一条评论方案，但无效，求可行解决思路。

内容的提问来源于stack exchange，提问作者KrewTahn