QTreeView::doubleClicked not sending a signal

Fuchsiaff

In my mainwindow.cpp class i have this connect function:
QObject::connect(dir->view, &QTreeView::doubleClicked, this, &MainWindow::on_actionQuit_triggered);

When double clicking on my QTreeView, the function isn't being run because the program didn't quit.

Now when i move that connect function inside my Directory class, then it works and then it looks like this:
QObject::connect(view, &QTreeView::doubleClicked, this, &Directory::open_file);

So basically, dir->view and view should be the same thing but the problem is that the connect function in my mainwindow.cpp file just isn't being ran.

SGaist

Hi,

Are you sure that dir->view is not a dangling pointer ? Because, for example, you shadowed it in your class constructor.

Fuchsiaff

qDebug() << dir->view; returns QTreeView(0x354460)
That means it shouldn't be a dangling pointer right?
Also where do I shadow it in my class constructor, i searched for the word "dir" in all my files and only found this:
dir = new Directory;

Fuchsiaff

https://github.com/Fuchsiaff/PyPad_2
My whole project can be found there, the place where i have problems can be found in
Sources->mainwindow.cpp->line 37

mrjj

@Fuchsiaff
Hi
You are not really inserting Directory into anything.
So how do you try to db click it ?

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow) {
    ui->setupUi(this);

    tab_class = new Tabs;
    dir = new Directory;
    dir->show(); // i added this and it shows up as other window as have no parent either
   ... 
    qDebug() << QObject::connect(dir->view, &QTreeView::doubleClicked, this, &MainWindow::on_actionQuit_triggered);
    setCentralWidget(tab_class);

}

so i think the main issu is you are not clicking on it ?

Fuchsiaff

In my tabs.cpp file i have this function

    dir_view->setVisible(true);
    tab_layout->removeWidget(tab);
    tab_layout->addWidget(dir_view->view);
    tab_layout->addWidget(tab);
    dir_view->hide();


   // auto p = dynamic_cast<QMainWindow*>(parent());
}

and in mainwindow.cpp i have this:

QObject::connect(test, &QShortcut::activated, tab_class, &Tabs::showDirectory);

When i activate the shortcut, it pops open a directory inside the window and when double clicking on items on the directory then it shows no sign of working.

Maybe that is the problem?

mrjj

@Fuchsiaff
Hi
kinda yes, you make a Directory object in mainwin and hook up its signal, but the one
from

class Tabs : public QWidget {
    Q_OBJECT
public:
    explicit Tabs(QWidget *parent = nullptr);

   ..
 Directory *dir_view = new Directory(this, "C:"); <<< this is other one than one in main
...

signals:

public slots:
    void showDirectory();

private slots:
    void tab_close_requested(int index);

};

so you didn't hook up its db click signal to anything.
That was for the one you created in mainwindow. Not this one.
so thats why nothing happens.

Fuchsiaff

Thank you so much! I got it to work!