QtWebEngine

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  Unsolved webengine load a html（contain a video），but can't play MP4。
  • henry_zxb

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  There's a wiki entry here.

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  Unsolved How to disable user-text-selection without using CSS Stylesheet?
  • SteKo_dev

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  @SteKo_dev said in How to disable user-text-selection without using CSS Stylesheet?:

  Is there any possibility to change it in the chromium based source code by default ?

  i would say THAT is the dirty way actually. You would have to make the change for every release?!
  I don't see why the injection should be dirty in your opinion. Thats actually pretty normal in Web 2.0 to dynamically inject content into a webpage.

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  Solved QtWebEngine --register-pepper-plugins
  • maximus

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  Cheers! Happy it worked.
  I had issues myself, it's not easy to debug when it goes wrong!

  Max

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  Unsolved Qt 5.10 / QWebEngineView / Touch Screen - default virtual keyboard not displayed
  • DeeeZ

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  Any news about this ?
  So Qt + QWebEngineView is not ready for TouchScreen environment ?

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  Unsolved How to enable Qt to support nacl ppapi plugins?
  • dr_W

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  Unsolved "onRenderProcessTerminated" is not availble due to component versioning
  • TonyN

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  @TonyN said in "onRenderProcessTerminated" is not availble due to component versioning:

  QtWebEngine 1.5

  Try importing 1.2.

  That looks like a bug in Qt to me, because all imports above 1.2 should work.

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  Unsolved How to disable web security policy? I tried many ways but failed. I use qt5.9.2
  • kingstying

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  Like this:
  QStringList argumentsAdded;
  ...
  argumentsAdded.append("--disable-web-security");
  ...
  int i = 0;
  int new_argc = argc + argumentsAdded.size();
  char** new_argv = (char **) malloc((new_argc + 1) * sizeof (char *));

  // Store previous arguments for(i = 0; i < argc; i++) { size_t length = strlen(argv[i])+1; new_argv[i] = (char *) malloc(length); memcpy(new_argv[i], argv[i], length); } // Store new arguments i=0; foreach(QString s, argumentsAdded) { new_argv[argc + i] = new char[s.toLocal8Bit().size()+1]; strcpy( new_argv[argc + i], s.toLocal8Bit().constData()); i++; } // Finish array with NULL value new_argv[new_argc] = NULL; // Create a single application to avoid to have several instance QtSingleApplication singleApp(new_argc, new_argv);
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  Unsolved How to make pepper plugins in Qt5.9 supported, in addition to "setAttribute (QWebEngineSettings: : PluginsEnabled, true)".
  • dr_W

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  Unsolved How to get the return value synchronously ,when invoking a slot medthod with qwebchannel.js?
  • xiao499242740

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  You can synchronize with the semaphore by yourself ,You can wait in invoke function until callback function return
  hope to help you

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  Unsolved How to prevent the white flashes during loading Web Contents
  • MsLiu

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• 

  Unsolved How to take screen captures
  • rmam

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  Does anyone have a suggestion?
  I have the very same problem: How do I render a QWebEngineView that has received content via QWebEngineView::setHtml().
  I do not want to show the Widget.

  Snippet:

  QImage img(region_width, region_height, QImage::Format_ARGB32); QWebEngineView* webEngineView = new QWebEngineView(); webEngineView->resize(region_width, region_height); webEngineView->setStyleSheet("background:red"); QWebEnginePage* webEnginePage = webEngineView->page(); webEnginePage->settings()>setAttribute(QWebEngineSettings::ScreenCaptureEnabled, true); webEngineView->setHtml("<p style=\"background-color:#FFF067;color:green\"> TEXT</p>"); QPainter p(&img); webEngineView->render(&p, QPoint(0, 0), QRegion(regionSize)); p.end(); img.save("img.png", "PNG", 80);

  The result is always an entirely white image, regardless of the given background color, the <p> does not get rendered.

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  Unsolved How to recompile QtWebengine5.6.3 to support XP?
  • elliyu

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• 

  This topic is deleted!
  • kingstying

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  Unsolved Qt5.9 source code compilation(QWebEngine)
  • dr_W

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  @raven-worx
  Configure summary:

  Build type: win32-msvc (i386, CPU features: sse sse2)
  Configuration: sse2 sse3 ssse3 sse4_1 sse4_2 avx avx2 compile_examples f16c forc
  e_debug_info largefile msvc_mp precompile_header shared debug_and_release releas
  e debug build_all c++11 concurrent dbus no-pkg-config release_tools stl
  Build options:
  Mode ................................... debug and release (with debug info);
  default link: debug; optimized tools
  Optimize release build for size ........ no
  Building shared libraries .............. yes
  Using C++ standard ..................... C++11
  Using gold linker ...................... no
  Using precompiled headers .............. yes
  Using LTCG ............................. no
  Target compiler supports:
  SSE .................................. SSE2 SSE3 SSSE3 SSE4.1 SSE4.2
  AVX .................................. AVX AVX2 F16C
  AVX512 ............................... <none>
  Build parts ............................ libs tools
  App store compliance ................... no
  Qt modules and options:
  Qt Concurrent .......................... yes
  Qt D-Bus ............................... yes
  Qt D-Bus directly linked to libdbus .... no
  Qt Gui ................................. yes
  Qt Network ............................. yes
  Qt Sql ................................. yes
  Qt Testlib ............................. yes
  Qt Widgets ............................. yes
  Qt Xml ................................. yes
  Support enabled for:
  Using pkg-config ....................... no
  QML debugging .......................... yes
  udev ................................... no
  Using system zlib ...................... no
  Qt Core:
  DoubleConversion ....................... yes
  Using system DoubleConversion ........ no
  GLib ................................... no
  iconv .................................. no
  ICU .................................... yes
  Logging backends:
  journald ............................. no
  syslog ............................... no
  slog2 ................................ no
  Using system PCRE2 ..................... no
  Qt Network:
  getaddrinfo() .......................... no
  getifaddrs() ........................... no
  IPv6 ifname ............................ no
  libproxy ............................... no
  OpenSSL ................................ yes
  Qt directly linked to OpenSSL ........ no
  SCTP ................................... no
  Use system proxies ..................... yes
  Qt Gui:
  Accessibility .......................... yes
  FreeType ............................... yes
  Using system FreeType ................ no
  HarfBuzz ............................... yes
  Using system HarfBuzz ................ no
  Fontconfig ............................. no
  Image formats:
  GIF .................................. yes
  ICO .................................. yes
  JPEG ................................. yes
  Using system libjpeg ............... no
  PNG .................................. yes
  Using system libpng ................ no
  EGL .................................... yes
  OpenVG ................................. no
  OpenGL:
  ANGLE ................................ yes
  Combined ANGLE Library ............... no
  Desktop OpenGL ....................... no
  Dynamic OpenGL ....................... no
  OpenGL ES 2.0 ........................ yes
  OpenGL ES 3.0 ........................ no
  OpenGL ES 3.1 ........................ no
  Session Management ..................... yes
  Features used by QPA backends:
  evdev .................................. no
  libinput ............................... no
  INTEGRITY HID .......................... no
  mtdev .................................. no
  tslib .................................. no
  xkbcommon-evdev ........................ no
  QPA backends:
  DirectFB ............................... no
  EGLFS .................................. no
  LinuxFB ................................ no
  VNC .................................... no
  Mir client ............................. no
  Windows:
  Direct 2D ............................ yes
  DirectWrite .......................... yes
  DirectWrite 2 ........................ yes
  Qt Widgets:
  GTK+ ................................... no
  Styles ................................. Fusion Windows WindowsXP WindowsVista

  Qt PrintSupport:
  CUPS ................................... no
  Qt Sql:
  DB2 (IBM) .............................. no
  InterBase .............................. no
  MySql .................................. no
  OCI (Oracle) ........................... no
  ODBC ................................... yes
  PostgreSQL ............................. no
  SQLite2 ................................ no
  SQLite ................................. yes
  Using system provided SQLite ......... no
  TDS (Sybase) ........................... no
  Qt SerialBus:
  Socket CAN ............................. no
  Socket CAN FD .......................... no
  QtXmlPatterns:
  XML schema support ..................... yes
  Qt QML:
  QML interpreter ........................ yes
  QML network support .................... yes
  Qt Quick:
  Direct3D 12 ............................ yes
  AnimatedImage item ..................... yes
  Canvas item ............................ yes
  Support for Qt Quick Designer .......... yes
  Flipable item .......................... yes
  GridView item .......................... yes
  ListView item .......................... yes
  Path support ........................... yes
  PathView item .......................... yes
  Positioner items ....................... yes
  ShaderEffect item ...................... yes
  Sprite item ............................ yes
  Qt Gamepad:
  SDL2 ................................... no
  Qt 3D:
  Assimp ................................. yes
  System Assimp .......................... no
  Output Qt3D Job traces ................. no
  Output Qt3D GL traces .................. no
  Qt 3D GeometryLoaders:
  Autodesk FBX ........................... no
  Qt Wayland Client ........................ no
  Qt Wayland Compositor .................... no
  Qt Bluetooth:
  BlueZ .................................. no
  BlueZ Low Energy ....................... no
  Linux Crypto API ....................... no
  Qt Sensors:
  sensorfw ............................... no
  Qt Quick Controls 2:
  Styles ................................. Default Material Universal
  Qt Quick Templates 2:
  Hover support .......................... yes
  Multi-touch support .................... yes
  Qt Positioning:
  Gypsy GPS Daemon ....................... no
  WinRT Geolocation API .................. yes
  Qt Location:
  Geoservice plugins:
  OpenStreetMap ........................ yes
  HERE ................................. yes
  Esri ................................. yes
  Mapbox ............................... yes
  MapboxGL ............................. no
  Itemsoverlay ......................... yes
  Qt Multimedia:
  ALSA ................................... no
  GStreamer 1.0 .......................... no
  GStreamer 0.10 ......................... no
  Video for Linux ........................ no
  OpenAL ................................. no
  PulseAudio ............................. no
  Resource Policy (libresourceqt5) ....... no
  Windows Audio Services ................. yes
  DirectShow ............................. yes
  Windows Media Foundation ............... yes
  Media player backend ................... DirectShow
  Qt WebEngine:
  Embedded build ......................... no
  Pepper Plugins ......................... yes
  Printing and PDF ....................... yes
  Proprietary Codecs ..................... yes
  Spellchecker ........................... yes
  WebRTC ................................. yes
  Using system ninja ..................... yes

  Note: No wayland-egl support detected. Cross-toolkit compatibility disabled.

  Qt is now configured for building. Just run 'jom'.
  Once everything is built, you must run 'jom install'.
  Qt will be installed into 'D:\Qt3\5.9.3\Qt5'.

  Prior to reconfiguration, make sure you remove any leftovers from
  the previous build.

  jom 1.1.2 - empower your cores

• 

  Unsolved Any way to configure/pass options to QtWebEngineProcess?
  • VRHans

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• 

  Unsolved QtWebEngine unwanted drag and drop.
  • Topguy

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• 

  Unsolved QtWebEngine Linux deployment problem
  • MazyCrazy

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  @MazyCrazy I once had the same error. What I did is to set 'Prefix' to the full path to your program folder, and that solve my problem.

• 

  Unsolved QtWebEngineView QML freeze whole PC while playing youtube video (proprietary codec)
  • AlexHuang

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• 

  Solved Qt WebEngine didn't build from qt-everwhere-src-5.10.0
  • buckler

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  That did it, thank you!

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  Unsolved Qt WebEngine mac framework overlaps/conflicts with Photoshop's bundled CEF
  • zura

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• 

  Unsolved How to open multiple sessions?
  • _compiler

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  Unsolved QtWebEngine crosscompile linking want very large /tmp/sometempfile (memory exhausted error)
  • _dmp

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  @SGaist Thank you very much. I will force my comp.

• 

  Unsolved Usage of Chromium GPL Components with a proprietary software
  • ramysiha

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  @ramysiha said in Usage of Chromium GPL Components with a proprietary software:

  So basically we have a proprietary software that uses QtWebEngine.
  Currently as far as I understand all the Chromium GPL libs are being linked into the QtWebEngineProcess and then communicates and renders the HTML pages into the proprietary QT application.
  Does that mean that the proprietary application needs to be GPL license compatible ?

  i am not a lawyer, these are just my thoughts/interpretations.

  I think you do not need to license your software to GPL (as long as you haven't changed any source of the GPL module). You haven't integrated QtWebEngine into your application, you are just using it by executing a "tool". And i think this is meant by "arm length".
  If you would have integrated it statically it would make a difference.

  But anyway to be safe you should consider to get legal advice by a laywer.

• 

  Unsolved Qt5: can WebGL work with ANGLE on Windows via QtWebEngine?
  qtwebengine webgl windows angle • • drmatt

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  Nowadays the software renderer for WebGL works fine. I wonder if there is some easy way to detect if the video adapter is affected (probably intel && being "old") and if that's the case, to switch to software renderer, at run-time - maybe before initializing QApplication? in order to pass --enable-webgl-software-rendering parameter programmatically.

• 

  Unsolved Managing downloads with QTWebEngine (QML based)
  • scotryder

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• 

  Solved Unable to load pepper flash
  • RaquelCesar

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  @RaquelCesar I am also facing the same error. I have tried giving the permission but didn't solve the issue.
  Could you please share your libpepflashplayer.so

• 

  Unsolved Javascript/JSON/HTML5/websocket support in QtWebEngine Quick Nano browser?
  • spsl

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  Unsolved How can I create audio visualizer for WebEngineView
  webengineview audio visualization qml • • ismail

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  Unsolved How to manage the lifecycle of a lambda function in QWebEnginePage::runJavaScript method
  • mahdikhani

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• 

  Solved QtWebEngine 5.10.0 configuration problem
  • HappyAct

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  As a follow-up, turns out Malwarebytes had quarantined QtWebEngineProcess and was blocking execution

• 

  Unsolved Access WebEngineView from C++
  • scotryder

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  Unsolved Change localStorage cache location at runtime with WebEngineProfile.storageName?
  • golgobot 0

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  QTWebEngine Smartcard client certificate
  • llxp

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• 

  Unsolved JSON.stringify problem
  • yetanotherqtfan

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  @yetanotherqtfan
  Don't understand what your problem/issue/question is? That output is the JSON stringification of the object. All that stringify should gurantee is that the resulting string can be passed around safely, and that JSON.parse(JSON.stringify(obj)) should return an object that is the same JS object as you started with. So what does JSON.parse() return in your case?

  &quot; is the HTML entitization of the " character.

• 

  Solved QWebChannel - js: Uncaught ReferenceError: qt is not defined
  • maximus

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  @maximus
  Just wanted to know, will c++ objects (workoutCreator) available to other javascript also?
  I am getting "undefined" error while accessing c++ object slots/function from script other than qwebchannel.js

• 

  Unsolved Does QtWebEngine support MutationObserver?
  • yanandli2002

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  @yanandli2002
  it should be supported.
  But actually waiting for an answer here takes longer than simply trying it yourself within 5 minutes.

• 

  Unsolved If I configure Qt 5.10 for a build on Windows
  • VRHans

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  I believe it succeeded. I'll validate, and then I think I'm going to update the wiki :).

• 

  Unsolved How to change "referer" of request header
  • youthdou

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  @raven-worx
  I have sovled it by compiling Qt. But I think there should be some tips in QT documents to describe it.

• 

  Unsolved AVDCreateGPUAccelerator: Error loading GPU renderer on MacPro Qt 5.6.x/5.9.2
  • Andrii Anpilogov

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  I leave this here for anyone having same issue:
  Add QTWEBENGINE_CHROMIUM_FLAGS="--supports-dual-gpus=true" or pass it over command line arguments.
  By default, Qt runs WebEngine with --supports-dual-gpus=false while Chrome doesn't.
  Allowing dual GPUs makes the magic. However,
  [26155:70403:0417/122744:ERROR:gl_context_cgl.cc(129)] Error creating context.
  is still there. But at least WebGL is working.

• 

  Unsolved QWebEngineView has error webgl pages on mac pro
  • Yoshimura

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  Hi @Yoshimura
  Have you found the solution to this issue?

  Regards