[SOLVED] Return value method

beowulf

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

Jake007

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.

beowulf

THANK YOU VERY MUCH!

Jake007

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

beowulf

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);

@