Run a foreign exe inside a Python GUI (PyQt)

import subprocess
import time
import win32gui

...

def initUI(self):
    # create a process
    exePath = "C:\\Windows\\system32\\calc.exe"
    subprocess.Popen(exePath)
    hwnd = win32gui.FindWindowEx(0, 0, "CalcFrame", "计算器")
    time.sleep(0.05)
    window = QWindow.fromWinId(hwnd)
    self.createWindowContainer(window, self)
    self.setGeometry(500, 500, 450, 400)
    self.setWindowTitle('File dialog')
    self.show()

...

• 01 create a process, run your exe
• 02 use spy++ to get hwnd of the exe
• 03 create QWindow from hwnd
• 04 create window container

Result:

lose exe’menu