PyQt5 QWebEngineView window won't show

Asked Mar 20 '19 at 02:14

Active Mar 20 '19 at 02:20

Viewed 1,585 times

I wrote a simple test program to load a URL in a QWebEngineView. The program works on Mac; the browser pops up and I can see the webpage. But on Windows 7, the browser window never appears after I call show():

import sys

from PyQt5.QtWidgets import QApplication
from PyQt5.QtWebEngineWidgets import QWebEngineView
from PyQt5.QtCore import QUrl

class Browser(QWebEngineView):
    def __init__(self):
        super().__init__()
        self.load(QUrl('https://google.com'))
        self.loadFinished.connect(self.pageReady)

    def pageReady(self, success):
        if success:
            self.show()
        else:
            print('page failed to load')

if __name__ == '__main__':
    app = QApplication(sys.argv)
    browser = Browser()
    app.exec_()

Is there something I'm missing? My firewall is disabled, so it shouldn't be a connection problem...

edited Mar 20 '19 at 02:20

eyllanesc

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asked Mar 20 '19 at 02:14

std_answ

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try add `self.resize(640, 480)` before `self.show()` – eyllanesc Mar 20 '19 at 02:23
and add `browser.loadProgress.connect(print)` to see the progress – eyllanesc Mar 20 '19 at 02:24
I see 100 being printed out, so it loads apparently. But the window never appears, even if I resize it before showing it. – std_answ Mar 20 '19 at 02:35
it seems to be a bug, what version of Qt Webengine and PyQt5 do you have? How did you install it? – eyllanesc Mar 20 '19 at 02:39
PyQt5 (5.12.1); PyQt5-sip (4.19.15); PyQtWebEngine (5.12.1). Installed via: pip install PyQt5, pip install PyQtWebEngine. I did not install Qt separately. – std_answ Mar 20 '19 at 02:45
Try installing PyQt5 to PyQtWebEngine 5.12: `pip install PyQtWebEngine==5.12 PyQt5==5.12` – eyllanesc Mar 20 '19 at 02:47
On the other hand, try another pc with windows, historically Qt WebEngine has had problems with old windows drivers, maybe this is the cause. If the problem persists, I recommend reporting it. – eyllanesc Mar 20 '19 at 02:50
5.12 has the same problem. I'll try another computer. – std_answ Mar 20 '19 at 02:51
Try the following code https://gist.github.com/eyllanesc/d6dcd227fbafbc03138b6c73b8dbe224 – eyllanesc Mar 20 '19 at 02:53

PyQt5 QWebEngineView window won't show

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