[SOLVED] Return value method

[A Former User]

Hello everyone, I created a class called SearchRequest to connect with a network and return something.

In the Mainwindow.cpp i created a slot for a PushButton:

@
void MainWindow::on_pushButton_clicked()
{

SearchRequest *NSearchRequest = new SearchRequest();

}
@

And in the SearchRequest class:

@
SearchRequest::SearchRequest(QObject *parent) : QObject(parent)
{

QNetworkAccessManager *manager = new QNetworkAccessManager(this);

QUrl url("url here...");

QNetworkRequest request(url);

request.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");

QUrl params;

params.addQueryItem("param1", "...");

params.addQueryItem("param2", "...");

params.addQueryItem("param3", "...");

connect(manager, SIGNAL(finished(QNetworkReply *)), this, SLOT(rfinished(QNetworkReply *)));

QNetworkReply *reply = manager->post(request, params.encodedQuery());

}

void SearchRequest::rfinished(QNetworkReply *reply)
{

QByteArray data = reply->readAll();

QString str(data);

qDebug() << str;

}
@

I want to know, how i put the return of the QNetworkReply in one Plain Text Edit that is "ui - design", example:

@ui->plainTextEdit->appendPlainText(str);@

str is return of QNetworkReply

[A Former User]

I'd recommend using signals and slots.
Tutorial "here":http://doc.qt.digia.com/qt/signalsandslots.html .

emit a signal in rfinished with QString as a parameter.
Then receive it in mainwindow slot method, from where you then output in text edit.
When you create an object SearchRequest, don't forget to connect it.

[A Former User]

THANK YOU VERY MUCH!

[A Former User]

If you say you'll emit QString *, you need to emit QString, not QByteArray.

This should work:
@emit test(new QString(data));@

EDIT:
I swear I saw a problem in post before this ;) .

Please mark thread as solved ( prepend [SOLVED] in front of a title ( edit first post)).

Regards,
Jake

[A Former User]

Yes, my mistake using * (pointer) like parameter in the signal.

I just changed to this:

@
SearchRequest::SearchRequest(QObject *parent) : QObject(parent)
{

QNetworkAccessManager *manager = new QNetworkAccessManager(this);

QUrl url("url here...");

QNetworkRequest request(url);

request.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");

QUrl params;

params.addQueryItem("param1", "...");

params.addQueryItem("param2", "...");

params.addQueryItem("param3", "...");

connect(manager, SIGNAL(finished(QNetworkReply *)), this, SLOT(rfinished(QNetworkReply *)));

QNetworkReply *reply = manager->post(request, params.encodedQuery());

}

void SearchRequest::rfinished(QNetworkReply *reply)
{

QByteArray data = reply->readAll();

QString str(data);

emit test(data);

}

signals:

void test(QString text);

@