QToolbar first item not clickable?



  • Very very weird issue. I've got code for a GUI I'm working on, and whatever action I add as the first item in the QToolbar is not clickable like usual.

    So, when I do this:

    @
    //----- Set up the top toolbar
    QToolBar* pToolBar = addToolBar("Connections");
    pToolBar->setObjectName("ConnectionBar");

    _pConnectAction = pToolBar->addAction("Connect");

    connect(_pConnectAction, SIGNAL(triggered()),
    this, SLOT(connectToServer()));
    @

    I get a QAction, which I cannot click, like this:

    !http://i.imgur.com/yhk87Lq.png()!

    When I add another QAction in front, like this:

    @
    QToolBar* pToolBar = addToolBar("Connections");
    pToolBar->setObjectName("ConnectionBar");

    pToolBar->addAction("foo you");

    _pConnectAction = pToolBar->addAction("Connect");

    connect(_pConnectAction, SIGNAL(triggered()),
    this, SLOT(connectToServer()));
    @

    I get this (notice that now Connect is clickable)

    !http://i.imgur.com/AHNyhax.png()!

    This is running in a QMainWindow subclass constructor.

    What have I done wrong?



  • also, not sure why the images didn't just come inline.



  • Why are you passing a string parameter to the addAction method? The method has the following signature:

    void addAction(QAction *action);

    You should create an action first, then add it to a toolbar. Try something like this:

    @
    QAction *deleteAction = new QAction(QIcon(":/images/delete.png"), tr("&Delete"), this);
    deleteAction->setShortcut(tr("Delete"));
    deleteAction->setStatusTip(tr("Delete item from diagram"));
    connect(deleteAction, SIGNAL(triggered()), this, SLOT(deleteItem()));

     QToolBar *editToolBar = addToolBar(tr("Edit"));
     editToolBar->addAction(deleteAction);
    

    @



  • Um, there is an overloaded version of addAction that makes the QAction for you?

    http://qt-project.org/doc/qt-4.8/qtoolbar.html#addAction-2

    Shouldn't have to make it first, then add it. The overload should work fine, and in fact does so for the second item.



  • Yep, you're right. Haven't seen it, sorry about that.

    This is strange indeed. Which version are you using? I just ran this simple test and it worked perfectly, with Qt 5.0.1 on Linux.

    @
    class MainWindow : public QMainWindow
    {
    Q_OBJECT

    public:
    MainWindow(QWidget *parent = 0);
    virtual ~MainWindow();

    (...)

    private slots:
    void testPrintRun();
    void testPrintStop();

    private:
    void createToolBars();

    QToolBar *toolbar;
    QAction *run;
    QAction *stop;
    (...)
    

    };

    (...)

    void MainWindow::createToolBars()
    {
    toolBar = addToolBar(tr("Run toolbar"));
    toolBar->setObjectName("run_toolbar");

    run = toolBar->addAction("runAct");
    stop = toolBar->addAction("stopAct");
    
    connect(run, SIGNAL(triggered()),
            this, SLOT(testPrintRun()));
    
    connect(stop, SIGNAL(triggered()),
            this, SLOT(testPrintStop()));
    

    }

    void MainWindow::testPrintRun()
    {
    std::cout << "Run action clicked" << std::endl;
    }

    void MainWindow::testPrintStop()
    {
    std::cout << "Stop action clicked" << std::endl;
    }

    @



  • I'm on Qt 4.8.3 on Ubuntu 12.10. I'll have to find a few minutes to run that code.


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