Webengine example fail with "Unknown module(s) in QT: webengine"

Konstantin Tokarev

@PSI_lbc said in Windows 7 Webengine example fail with "Unknown module(s) in QT: webengine":

Docs say it's there but it isn't. This is after a fresh install of 5.8,5.7 MinGW53_32 and 5.6 MinGW49_32

You need to install Qt 5.8.0 and extract QtWebKit binaries that you can download from link that I've posted above.

@PSI_lbc said in Windows 7 Webengine example fail with "Unknown module(s) in QT: webengine":

Do you know if the 5.8/Webkit binaries support a mix of HTML and JavaScript on the same page?

Of course, yes!

xeoshow

Is there any stable binary release for qt 5.9.2 now?
Thanks a lot!

Best regards, Jason

mrjj

@xeoshow
Hi
I think its still alpha
https://github.com/annulen/webkit/releases

xeoshow

@mrjj said in Windows 7 Webengine example fail with "Unknown module(s) in QT: webengine":

@xeoshow
Hi
I think its still alpha
https://github.com/annulen/webkit/releases

I am still using the qt 5.5.1 mingw version, and using the default webview in that QT version. One BIG problem I met is memory leak seems still in qt 5.5.1 mingw version ...

Is the memory leak problem resolved in the qtwebkit-tp5-qt58-mingw530-x86.zip or qtwebkit-5.212.0_alpha2-qt59-mingw530-x86.zip from https://github.com/annulen/webkit/releases ?

xeoshow

I just tried qt-opensource-windows-x86-mingw530-5.8.0.exe and qtwebkit-tp5-qt58-mingw530-x86.zip, For one of my project works well with qt 5.5.1 mingw, now got below error when compiling, anything I should modify? Or anything missing?

Thanks a lot!

Best regards, Jason

D:/Qt/Qt5.8.0/Tools/mingw530_32/bin/../lib/gcc/i686-w64-mingw32/5.3.0/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -lQt5WebKitWidgetsd
D:/Qt/Qt5.8.0/Tools/mingw530_32/bin/../lib/gcc/i686-w64-mingw32/5.3.0/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -lQt5WebKitd
collect2.exe: error: ld returned 1 exit status
Makefile.Debug:77: recipe for target 'debug/xc-browser.exe' failed
mingw32-make[1]: Leaving directory 'D:/gitrepository/xc/build-xc-browser-desktop-Desktop_Qt_5_8_0_MinGW_32bit-Debug'
mingw32-make[1]: *** [debug/xc-browser.exe] Error 1
Makefile:34: recipe for target 'debug' failed
mingw32-make: *** [debug] Error 2
13:35:42: Process"D:\Qt\Qt5.8.0\Tools\mingw530_32\bin\mingw32-make.exe"exit，exit code 2 。
Error while building/deploying project xc-browser-desktop (kit: Desktop Qt 5.8.0 MinGW 32bit)
When executing step "Make"
13:35:42: Elapsed time: 00:34.

xeoshow

What I am talking about the memory leak, is something as below:

https://forum.qt.io/topic/10832/memory-size-increases-per-page-load/13

Konstantin Tokarev

@xeoshow said in Windows 7 Webengine example fail with "Unknown module(s) in QT: webengine":

Is the memory leak problem resolved in the qtwebkit-tp5-qt58-mingw530-x86.zip or qtwebkit-5.212.0_alpha2-qt59-mingw530-x86.zip

Please try it out, IIRC I couldn't reproduce that issue.

Also, don't use QWebSettings::setObjectCacheCapacities(0,0,0), this indeed was causing leaks in the old versions, and WebKit isn't really tuned or even tested to operate with no cache at all.

xeoshow

@Konstantin-Tokarev said in Windows 7 Webengine example fail with "Unknown module(s) in QT: webengine":

@PSI_lbc said in Windows 7 Webengine example fail with "Unknown module(s) in QT: webengine":

Docs say it's there but it isn't. This is after a fresh install of 5.8,5.7 MinGW53_32 and 5.6 MinGW49_32

You need to install Qt 5.8.0 and extract QtWebKit binaries that you can download from link that I've posted above.

@PSI_lbc said in Windows 7 Webengine example fail with "Unknown module(s) in QT: webengine":

Do you know if the 5.8/Webkit binaries support a mix of HTML and JavaScript on the same page?

Of course, yes!

@Konstantin-Tokarev said in Windows 7 Webengine example fail with "Unknown module(s) in QT: webengine":

@xeoshow said in Windows 7 Webengine example fail with "Unknown module(s) in QT: webengine":

Is the memory leak problem resolved in the qtwebkit-tp5-qt58-mingw530-x86.zip or qtwebkit-5.212.0_alpha2-qt59-mingw530-x86.zip

Please try it out, IIRC I couldn't reproduce that issue.

Also, don't use QWebSettings::setObjectCacheCapacities(0,0,0), this indeed was causing leaks in the old versions, and WebKit isn't really tuned or even tested to operate with no cache at all.

Thanks for kind help, OK, I will try it out and report back.

BTW, is there any estimate target date for the beta or stable version? Thanks again.

Best regards, Jason

xeoshow

Hello @Konstantin-Tokarev ,

I tried with 5.8.0 and 5.9.2 and your corresponding release of QtWebKit, seems still the same symptom, the memory will keep increasing if I refresh the page repeatedly.

BTW, the html pages I used are generated via vuejs, is that OK?

Thanks a lot.

Best regards, Jason

omagaldadze

It now says Qt Webengine component is only supported for MSVC 2017, took me a while to figure out.