I need to get title of webpage

Armin · wrote on 23 Jan 2017, 11:22

Hi
I need to get title of webpage , for example : https://forum.qt.io/category/10/general-and-desktop , title : General and Desktop | Qt Forum .
How can i do?
Thanks

p3c0 · 23 Jan 2017, 12:01

@Armin using what ? use title to get it using QWebEnginePage.

Armin · 23 Jan 2017, 12:14

@p3c0 Thanks
I used QWebEngineView before i send this topic.
I using QWebEnginePage and i get thie error :
:-1: error: Unknown module(s) in QT: webenginewidgets

jsulm · 23 Jan 2017, 12:24

@Armin What is Qt version you're using? webenginewidgets is available since Qt 5.4

Armin · 23 Jan 2017, 12:27

@jsulm
I using Qt Creator 4.0.2
Update ? or no ?

jsulm · 23 Jan 2017, 12:45

@Armin I wanted to know the Qt version, not QtCreator version.
Which Qt version did you install?

Armin · 23 Jan 2017, 12:48

@jsulm Thanks
Sorry
I downlaoded 5.7.0

jsulm · 23 Jan 2017, 12:55

@Armin Did you install Qt WebEngine as well? It is not part of default installation. You can use Qt Maintenance Tool to install Qt WebEngine.

Armin · 23 Jan 2017, 12:56

@jsulm
How can i install that ?

jsulm · A Armin 23 Jan 2017, 12:55

@Armin If you used Qt Online INstaller then you already have the Qt Maintenance Tool - see in Qt installation directory.

Armin · 6 Feb 2017, 05:59

My maintance tool problem solved.
but i dont know how i must get title of a html page.

jsulm · 6 Feb 2017, 09:29

@Armin You mean you want to extract title from:

<head>
	<title>General and Desktop | Qt Forum</title>

right?
Then you can just sent a GET request using http://doc.qt.io/qt-5/qnetworkaccessmanager.html and then parse the response (you can use a regular expression to extract the title from <title>...</title>).
From the link above:

QNetworkRequest request;
request.setUrl(QUrl("http://qt-project.org"));
request.setRawHeader("User-Agent", "MyOwnBrowser 1.0");

QNetworkReply *reply = manager->get(request);
connect(reply, SIGNAL(readyRead()), this, SLOT(slotReadyRead()));
connect(reply, SIGNAL(error(QNetworkReply::NetworkError)),
        this, SLOT(slotError(QNetworkReply::NetworkError)));
connect(reply, SIGNAL(sslErrors(QList<QSslError>)),
        this, SLOT(slotSslErrors(QList<QSslError>)));

Armin · 6 Feb 2017, 09:30

@jsulm Thanks
But i want to get title and i don't need to set. i need get and no set

jsulm · 6 Feb 2017, 10:19

@Armin Where did I say anything about set?

Armin · 2 Jun 2017, 10:19

@jsulm Thanks
In this line if i am not mistaken you set the title
request.setRawHeader("User-Agent", "MyOwnBrowser 1.0");
But i want to store the title in a QString

jsulm · 2 Jun 2017, 10:22

@Armin No this line does not set any titles, why do you think so? Did you read the documentation? You can remove this line. It is not needed for your use-case.

Armin · 7 Feb 2017, 11:51

@jsulm Thanks

now , all i want is to get url in title ( <title> ... </title> ) and put it on QString.

jsulm · 11 Feb 2017, 12:41

@Armin You can use a regular expression after you got the response from the server to extract the title.

Armin · 13 Feb 2017, 05:19

@jsulm Thanks
If that file isn't html , and be mp4 or pdf
So what do i do ?

jsulm · 13 Feb 2017, 10:17

@Armin Sorry, but you asked how to get the title of a web page, right?
What do you want to do with mp4 or pdf?