QTreeView - how to autoselect first row?

[jpn]

#include <QtGui>
 
int main(int argc, char* argv[])
{
    QApplication app(argc,argv);
    QTreeView view;
    QDirModel model;
    view.setModel(&model);
    view.setCurrentIndex(model.index(0, 0));
    view.show();
    return app.exec();
}

#include <QtGui>

int main(int argc, char* argv[])
{
    QApplication app(argc,argv);
    QTreeView view;
    QDirModel model;
    view.setModel(&model);
    view.setCurrentIndex(model.index(0, 0));
    view.show();
    return app.exec();
}

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[caduel]

As a side note: I suggest to use

QAbstractItemView *view=...;
view->setCurrentIndex(view->model()->index(0, 0));

QAbstractItemView *view=...;
view->setCurrentIndex(view->model()->index(0, 0));

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That way your code will work even when you finally decide you want to wrap your model in a QSortFilterProxyModel.

The compiler can not give you safety in the sense that a QModelIndex, a model and a view actually match (was the QModelIndex an index of the proxy or the source model again...).
Using view->model() etc makes your code improves maintainability by being more robust against such errors and model changes. And in my experience most views will sooner or later get a proxy round their model.

HTH