QAxWidget not working on PyQt6

[Lukas Lang]

Sorry, it seems I have misread your original message. Now it works. Thanks!

Best,
Lukas

-----Original Message-----
From: Phil Thompson <phil at riverbankcomputing.com> 
Sent: Monday, 6. October, 2025 14:49
To: Lukas Lang <lukaslang.bugtracker at outlook.com>
Cc: pyqt at riverbankcomputing.com
Subject: Re: QAxWidget not working on PyQt6

I said PyQt6-Qt6, not PyQt6.

Phil

On 06/10/2025 13:21, Lukas Lang wrote:
> (sending the message a second time because I got a "delivery failed"
> error the first time)
> 
> Thanks for the prompt response. Unfortunately, I get the same error 
> even after installing PyQt6 with "pip install pyqt6==6.9.0".
> (pyqt6==6.8.1 works, but seems like a needlessly old version)
> 
> Best,
> Lukas
> 
> -----Original Message-----
> From: Phil Thompson <phil at riverbankcomputing.com>
> Sent: Monday, 6. October, 2025 12:08
> To: Lukas Lang <lukaslang.bugtracker at outlook.com>
> Cc: pyqt at riverbankcomputing.com
> Subject: Re: QAxWidget not working on PyQt6
> 
> On 06/10/2025 07:44, Lukas Lang wrote:
>> Hi,
>> 
>> I am running into an issue trying to use QAxWidget in PyQt6:
>> 
>> import sys
>> from PyQt6.QAxContainer import QAxWidget from PyQt6.QtWidgets import 
>> QApplication, QMainWindow
>> 
>> class MyWindow(QMainWindow):
>>     def __init__(self):
>>         super().__init__()
>> 
>>         self.ax = QAxWidget("Shell.Explorer.2") # other ActiveX 
>> controls are also broken
>> 
>> if __name__ == "__main__":
>>     app = QApplication(sys.argv)
>>     window = MyWindow()
>>     window.show()
>>     sys.exit(app.exec())
>> 
>> Trying to run this in Python 3.13.7 with only PyQt6 installed, I get 
>> "Cannot mix incompatible Qt library (6.9.0) with this library 
>> (6.9.2)". Replacing PyQt6 in the imports with PyQt5 works as expected 
>> on the other hand (after installing PyQt5 of course). Am I doing 
>> something wrong, or is there a problem with the pre-built binaries?
> 
> QAxWidget does not guarantee backwards binary compatibility between Qt 
> releases. These days I always build the wheels against the 
> corresponding
> .0 version of Qt. Hopefully if you pin the version of PyQt6-Qt6 to
> v6.9.0 it should work.
> 
> Phil