Flickering when bundled via Pyinstaller in windows 7

[FaizRasool]

I have created executable in windows 10 using pyinstaller using the command below:

pyinstaller.exe --clean --windowed --noconsole --hidden-import "clr" main.py --add-data "C:\Users\User\AppData\Local\Programs\Python\Python36\Lib\site-packages\webview\lib\WebBrowserInterop.x64.dll;./" --add-data "C:\Users\User\AppData\Local\Programs\Python\Python36\Lib\site-packages\webview\lib\WebBrowserInterop.x86.dll;./" --add-data "res;./res/"

In the code i am starting remi some thing like this

if __name__ == "__main__":
    start(NetworkTester, standalone=True,
          width=300, height=300, resizable=False, title='Network Tester')

However when i open the program in windows 7 its just keep refreshing and its just unusable. I cannot type or click button it just keep flicking / refreshing? Any suggestions?

[dddomodossola]

Try using it with standalone=False. Let me know if the problem disappear .

[FaizRasool]

Hi yes - when i open in the IE 11 it has the same problem.

It's giving me InvalidStateError. On Line: 123, Column : 25

Which is javascript code:

if(pendingSendMessages.length<1000){ ws.send(message); }

which is under the function called sendCallbackParam

[dddomodossola]

@FaizRasool try the same with a most modern browser (Firefox or Chrome) . Your browser seems to not support (or not completely) websockets.

[FaizRasool]

Also for some reason i am unable to start pywebview in cef so i have to do this to support older os

# start for windows
def start_browser_legacy_windows():
    start(NetworkTester, title='Network Tester', port=8023, start_browser=False, update_interval=999)


def start_legacy_windows():
    from threading import Thread, Lock
    import sys
    from cefpython3 import cefpython as cef  # import the cef python
    server_lock = Lock()
    browser_thread = Thread(target=start_browser_legacy_windows)
    browser_thread.daemon = True
    browser_thread.start()
    sys.excepthook = cef.ExceptHook  # To shutdown all CEF processes on error
    cef.Initialize()
    windowInfo = cef.WindowInfo()
    windowInfo.SetAsChild(0, [0, 0, 300, 300])
    pb = cef.CreateBrowserSync(windowInfo=windowInfo, browserSettings={}, navigateUrl='http://127.0.0.1:8023',
                               window_title='Network Tester')
    cef.MessageLoop()
    cef.Shutdown()


# starts the web server
if __name__ == "__main__":
    if "Windows-7" in system_info.get():
        start_legacy_windows()
    else:
        start(NetworkTester, standalone=True,
              width=300, height=300, resizable=False, title='Network Tester')

[dddomodossola]

pywebview is based on different libraries. You might update Qt libraries and pywin32 . Does it works with standalone=False and Chrome?