Is it possible to remove the preview widget from a qt QColumnView?

Question

I need to display a hierarchical set of data in a qt view. I\'m using QColumnView to display the model. However, there is a feature such that the last column in the view will

Answer 1

This will hide the button when it is clicked.

#include <QtGui/QApplication>
#include <QtGui/QColumnView>
#include <QtGui/QPushButton>
#include <QtGui/QFileSystemModel>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    QColumnView view;
    QFileSystemModel model;
    QPushButton button(&view);

    button.setText("Click me");
    QObject::connect(&button, SIGNAL(clicked()), &button, SLOT(hide()));

    model.setRootPath("/");

    view.setModel(&model);
    view.setPreviewWidget(&button);
    view.show();

    return a.exec();
}

Notice that it will become hidden forever. You have to call show() if you want it to be displayed again.