webenginewidgets on .pro of library produce error

[LovelyGrace]

I have created a project using QWebEngine and would want to convert it as a library (Shared Library) so that it can be integrate to any project. To test it, I created a subdir project first, then a library which will use qwebengine and a console project that will manage the library to run.

On .pro of the library and console project, I assume it is needed to include QT += core gui webenginewidgets, but I keep getting errors about qwebenginewidgets. I need qwebenginewidgets to be able to use qwebengine classes like QWebEngineView. How am I going to fix this?

[jsulm]

@LovelyGrace said in webenginewidgets on .pro of library produce error:

but I keep getting errors about qwebenginewidgets

when compiling your lib or the project using your lib?
And what errors are those?

[LovelyGrace]

I am getting :-1: error: [sub-WebLogin-qmake_all] Error 3 or unknown: webenginewidgets, something like that.

I wonder if it's because of the kit? does webenginewidgets only works at qt 5.9+ version?

[LovelyGrace]

And is it because of the msvc version?

[SGaist]

Hi,

What version of Qt are you using ?
What compiler are you using ?

Yes, QtWebEngine has more drastic restrictions with regards to compilers because of Chromium that it uses internally. So depending on the Qt version you are currently using, you would need to have either MSVC2015 (pre-Qt 5.12) or MSVC2017 (starting with Qt5.12).

[LovelyGrace]

I am using msvc 2015 and 2017 Qt 5.9.6 and it works as console project. Why isn't it working as library?

How about mingw?

[SGaist]

It shouldn't make any difference.

Can you show both the console and library .pro files ?

[LovelyGrace]

now i'm getting error from the subdir project C1083: Cannot open include file: 'QWebEngineView': No such file or directory when I tried to include QWebengine classes

This is the library.pro
QT += webenginewidgets
QT += webchannel websockets network
QT += core gui

CONFIG += c++11 console
CONFIG -= app_bundle

TARGET = WebLogin
TEMPLATE = lib

DEFINES += WEBLOGIN_LIBRARY
DEFINES += QT_DEPRECATED_WARNINGS

SOURCES +=
weblogin.cpp
Encryption/qblowfish.cpp
WebSocket/websocketclientwrapper.cpp
WebSocket/websockettransport.cpp

HEADERS +=
weblogin.h
weblogin_global.h \
Encryption/qblowfish.h
Encryption/qblowfish_p.h
WebSocket/websocketclientwrapper.h
WebSocket/websockettransport.h

unix {
target.path = /usr/lib
INSTALLS += target
}

and the console.pro
QT -= gui

CONFIG += c++11 console
CONFIG -= app_bundle

DEFINES += QT_DEPRECATED_WARNINGS

SOURCES +=
main.cpp

win32:CONFIG(release, debug|release): LIBS += -L$$OUT_PWD/../WebLogin/release/ -lWebLogin
else:win32:CONFIG(debug, debug|release): LIBS += -L$$OUT_PWD/../WebLogin/debug/ -lWebLogin
else:unix: LIBS += -L$$OUT_PWD/../WebLogin/ -lWebLogin

INCLUDEPATH += $$PWD/../WebLogin
DEPENDPATH += $$PWD/../WebLogin

and the sub dir.pro
QT += webenginewidgets
QT += webchannel websockets network
QT += core gui

TEMPLATE = subdirs

SUBDIRS +=
WebLogin
ManageLogin

When I tried to build the library only, it doesn;t produce the error, but when I am trying to build the whole project from sub dir project including the library and the console, it produce the error

I am only using kit msvc 2015 and 2017 Qt 5.9.6

[jsulm]

This post is deleted!

[jsulm]

@LovelyGrace said in webenginewidgets on .pro of library produce error:

but when I am trying to build the whole project from sub dir project including the library and the console, it produce the error

You need to add Qt += webenginewidgets to your console project as well.