getting a blank/empty window when trying to open a webpage

r0x0r / pywebview

Build GUI for your Python program with JavaScript, HTML, and CSS

https://pywebview.flowrl.com

BSD 3-Clause "New" or "Revised" License

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getting a blank/empty window when trying to open a webpage #1396

Closed tedmoorman closed 1 week ago

tedmoorman commented 1 month ago

Specification

pywebview version: 5.1
operating system: Windows 10
web renderer: chromium (I think)

Description

Used example in simple_browser.py and am getting a blank/empty window. Web page appears with QtWebEngine and with webbrowser. System is an internal network. Glad to try whatever troubleshooting I can on my end.

Practicalities

NO, I am willing to work on this issue myself.
NO, I am prepared to support this issue financially.

r0x0r commented 1 month ago

Are there any errors?

tedmoorman commented 1 month ago

Not getting any errors. Tried another web address and was asked for login credentials, whereas webbrowser will open a new tab in an existing browser without asking for login credentials. The particular site that is blank/empty quickly goes from a white background to a gray background upon closer inspection. Attaching screen shot below. pywebview_blank_screen

r0x0r commented 1 month ago

Are you using PyQT? This looks like a known issue, which is solved by disabling sandbox mode in qt.py line 49 for a selected platform.

Other than that, I suggest using Edge Chromium on Windows.

tedmoorman commented 1 month ago

Are you using PyQT? This looks like a known issue, which is solved by disabling sandbox mode in qt.py line 49 for a selected platform.

I have PyQT installed in the environment, but I am not using PyQT in the code. I'm just using the example from simple_browser.py. Would this still be a problem?

I tried some other websites, and I am seeing those display in the browser. So, maybe it's just an issue with the configuration of certain websites?

r0x0r commented 1 month ago

It is a known QT problem with a fix for selected platforms here. Adding your platform there should help. https://github.com/r0x0r/pywebview/blob/99f18d01434773407cc0d32a01678bbc8ae0034e/webview/platforms/qt.py#L49

I recommend using EdgeChromium webview2 over QT on Windows, though

tedmoorman commented 1 month ago

It is a known QT problem with a fix for selected platforms here. Adding your platform there should help.

I added 'windows' as a platform after running QtCore.QSysInfo.productType(), and I still get the white to gray screen.

I recommend using EdgeChromium webview2 over QT on Windows, though

I also tried with webview.start(gui='edgechromium'), and I still get the white to gray screen.

Please let me know if you think of anything else, and thank you for your help!

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