Using QWebkit for windows with mingw

artwaw

@Thank-You How did you install those precompiled binaries? Can you show your .pro file? It looks like those are not placed correctly, hence the fail.

Thank You

@artwaw

How did you install those precompiled binaries?

I just copied all files and moved to C:/Qt/Qt5.12.8/5.12.8/mingw73_32/ for 32 bit and on 64 bit C:/Qt/Qt5.12.8/5.12.8/mingw73_32/

web.pro

QT       += core gui webkitwidgets

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++11

# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

SOURCES += \
    main.cpp \
    mainwindow.cpp

HEADERS += \
    mainwindow.h

FORMS += \
    mainwindow.ui

mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include<QWebView>
#include<QtWebKit/QtWebKit>
#include<QtWebChannel/QWebChannel>
#include<QVBoxLayout>


QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = nullptr);
    ~MainWindow();

private:
    Ui::MainWindow *ui;
     QWebView *view ;
     QVBoxLayout *layout;
     QWidget *wid;
};
#endif // MAINWINDOW_H

mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include<QHBoxLayout>

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    wid = new QWidget();
    layout = new QVBoxLayout(wid);


    view = new QWebView(this);
    view->load(QUrl("https://google.com"));
    layout->addWidget(view);

    wid->setLayout(layout);
    setCentralWidget(wid);
}

MainWindow::~MainWindow()
{
    delete ui;
}

I hope it's correct 😂😂😂

artwaw

@Thank-You said in Using QWebkit for windows with mingw:

I just copied all files and moved to C:/Qt/Qt5.12.8/5.12.8/mingw73_32/ for 32 bit and on 64 bit C:/Qt/Qt5.12.8/5.12.8/mingw73_32/

what

artwaw

@Thank-You also if I am not mistaken you need not only webkitwidgets - I have a program that uses webkit as w page viewer, written some time ago, but its pro file had to have Qt += webkitwidgets webkit together to work properly. I am not certain if this might be the case but please try, as I said it was some time ago.

Thank You

@artwaw said in Using QWebkit for windows with mingw:

you need not only webkitwidgets

Sorry, I was trying to tweak things if it will work after you asked about .pro file. I had actually have both

what

What Should I do?
Isn't it correct.
https://forum.qt.io/topic/119469/webkit-for-mingw-how-to-build/18

artwaw

@Thank-You Just to make sure: you copied 32bit files to 32bit mingw at mingw73_32 (which makes sense) and then you copied 64bit files to 32bit mingw folder, possibly overwriting 32bit libraries copied previously?

Thank You

@artwaw
Single option is given:
qtwebkit-Windows-Windows_10-Mingw73-Windows-Windows_10-X86_64.7z

So I copied same things to both directories.

This is bin folder. It doesn't have any differences

and others are also same. Files aren't seperated

artwaw

@Thank-You said in Using QWebkit for windows with mingw:

X86_64.7z

Those are 64bit binaries. They will not work if you compile for 32bit target.

Thank You

@artwaw

Ok But compiling with 64 bit also gives error on both debug and release.(Mentioned at the main post)
What about it?
Where can I get 32bit binaries?

Christian Ehrlicher

@Thank-You said in Using QWebkit for windows with mingw:

Where can I get 32bit binaries?

On the same link from above I would guess.

artwaw

@Thank-You said in Using QWebkit for windows with mingw:

But compiling with 64 bit also gives error on both debug and release.(Mentioned at the main post)

Hardly a surprise if you did not copy the 64bit binaries to the 64bit part of Qt tree.

Thank You

@artwaw
I tried using windows 7 32bit binaries in 32 bit and it compiled but shows message

The program has unexpectedly finished.
 The process was ended forcefully.

I couldn't make it working

artwaw

@Thank-You You can try to use a Dependency Walker tool to identify what's missing.

Thank You

@artwaw
I used it. Found out libxml2-2.dll libxslt-1.dll were not present after running windeployqt. So I copied them to executable directory.
After that it shows this error.

JKSH

@Thank-You said in Using QWebkit for windows with mingw:

Qt5WebKitWidgets.dll is looking for QtPrivate::argToQString(QStringView), which is present in recent versions of Qt Core.

It sounds like the latest Qt WebKit binaries are built against Qt 5.14:

Can you update to Qt 5.14 or Qt 5.15?

Thank You

@JKSH
Hey, I have been using Qt5.12.8 and has other dependencies too.
Will code compiling in Qt 5.12.8 would compile in QT 5.15 ???

SGaist

Yes, that's one of the strength of Qt.

Thank You

I installed QT 5.15.2 and build with it. Got all dependencies with windeployqt and added libxml2-2.dll libxslt-1.dll.
It now shows error zlib1__.dll not found.
I searched in whole qt directory but couldn't find one so I managed to download zlib1.dll not zlib1__.dll from dll-files.com.
I renamed zlib1.dll to zlib1__.dll and placed in binary directory. I don't know if this is good to do.
Where is zlib1__.dll located in QT??? OR it isn't related with QT?

Atleast it is working in 64bit version but shows TLS initialization failed Which is connected to OpenSSL so I am sure I will solve this problem.
Edit:
I copied libcrypto-3-x64.dll and libssl-3-x64.dll to executable directory but couldn't get it working
Now some problems that I can't figure out are:
It doesn't work with debug
Most importantly it doesn't work with 32 bit which is most for me.
How can I obtain it?

Thank You

@Thank-You
Now after installing another version of openssl it is working on 64bit.
I couldn't make it work in 32bit.
And I found that many websites doesn't considered it as supported version.
I found that we can embed existing application to QT application but has no idea.
Main purpose of this is to run services like gmail , google docs and other servuces.
Which would be good?
I was just searching abt this yesterday and found about running application. Could you give links of working docs about this?

I will create new question abt this

https://forum.qt.io/topic/132721/opening-external-application-and-embed-it-without-opening-application-out-of-application

JKSH

@Thank-You said in Using QWebkit for windows with mingw:

And I found that many websites doesn't considered it as supported version.

Web engines are very difficult to maintain because of security requirements. That is why the Qt Project replaced Qt WebKit (which was mostly maintained by the Qt folks) with Qt WebEngine (which is mostly maintained by the Chromium folks).

@Konstantin-Tokarev has done a great job making Qt WebKit compatible with recent versions of Qt, but the last update was over 1 year ago. Lots of security vulnerabilities have been discovered in WebKit since then; that is why many websites don't consider it as a supported version.

Main purpose of this is to run services like gmail , google docs and other servuces.
Which would be good?

Qt WebEngine for desktop platforms; Qt WebView for mobile platforms.