Question

I’m building a Qt app. In the event handler I want to access the widget that fired the event.

You can do this in the event filter method by casting the QObject parameter:

bool MainWindow::eventFilter(QObject *obj, QEvent *event)
{
    MyWidget* widget= static_cast<MyWidget*>(obj);
    ...
}

But how can I do that inside a signal method? For example, a listview onclick signal:

void MainWindow::listView_Click(QModelIndex index)
{
     QListView* view = // ????
}

Thank you

Answer 1

Try QObject::sender().

void MainWindow::listView_Click(QModelIndex index)
{
    QListView* view = qobject_cast<QListView* >(sender());
}