QNetworkAccessManager-没有这样的信号 [英] QNetworkAccessManager - No such signal

问题描述

void MainWindow::handleGetReply(QNetworkReply  *reply)
{
    qDebug() << reply;
}

void MainWindow::on_getDetailsButton_clicked()
{
    QNetworkAccessManager *manager = new QNetworkAccessManager(this);
    connect(
                manager,
                SIGNAL(finished(QNetwokReply *reply)),
                this,
                SLOT(handleGetReply(QNetworkReply*)));
    manager->get(QNetworkRequest(QUrl("http://google.com")));
}

由于某种原因，这不起作用，并且我收到以下消息:

For some reason this doesn't work, and I have the following message:

QObject::connect: No such signal QNetworkAccessManager::finished(QNetwokReply *reply) in ..\MyApplication\mainwindow.cpp:63
QObject::connect:  (receiver name: 'MainWindow')

推荐答案

使用SIGNAL和SLOT宏连接信号时，只需要传递信号传输的数据类型，在这种情况下，应该是:

When you connect the signal using the SIGNAL and SLOT macros, you only need to pass the type of data that the signal transports, in your case it should be:

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

尽管建议使用新语法:

connect(manager, 
        &QNetworkAccessManager::finished, 
        this, 
        &MainWindow::handleGetReply);

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