怎么添加TreeView 的item双击事件? [复制链接]

ui:
QTreeView *treeView;
treeView = new QTreeView(centralwidget);
splitter->addWidget(treeView);


mainwindow.h
class MainWindow : public QMainWindow, private Ui::MainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = 0);
    QDirModel *model;

//    void mousePressEvent(QMouseEvent *event);
//    Ui_MainWindow ui;
private slots:
    void on_action_triggered();
    void on_action_2_triggered();
    void on_action_4_triggered();
    void on_action_5_triggered();
    void on_action_6_triggered();
    void on_action_About_triggered();
    void itemSelected(QModelIndex &index);
   
};


mainwindow.cpp:


model = new QDirModel(this);
treeView->setModel(model);
connect(treeView,SIGNAL(doubleClicked(QModelIndex &)),qApp,SLOT(itemSelected(QModelIndex &)));


为什么我双击没反映啊?根本就没有触发doubleClicked事件.

我也遇到这样的问题，还没解决

问题解决了
on_action_triggered();是action的默认触发函数,就是说你不用connect也可以触发on_action_triggered();
问题在于:
connect(treeView,SIGNAL(doubleClicked(QModelIndex &)),qApp,SLOT(itemSelected(QModelIndex &)));中的qApp,要关联上某个对象的方法,一般用this就可以了.