Deleting sections from a moc file

gabor53

Hi,
I have QDialog called review (review.h, review.cpp and review.ui).
When I run the program I get the following error message:

C:\Programming\Projects\build-Folkfriends_1-Desktop_Qt_5_6_1_MinGW_32bit2-Debug\debug\moc_review.cpp:70: error: undefined reference to `Review::on_pushButton_Submit_clicked()'

moc-review.cpp has the following code at line 70:

void Review::qt_static_metacall(QObject *_o, QMetaObject::Call _c, int _id, void **_a)
{
    if (_c == QMetaObject::InvokeMetaMethod) {
        Review *_t = static_cast<Review *>(_o);
        Q_UNUSED(_t)
        switch (_id) {
        case 0: _t->on_pushButton_Submit_clicked(); break;
        default: ;
        }
    }
    Q_UNUSED(_a);
}

where line 70 is the line starts with case 0.
the pushButton it refers to is non existent any more but this line clearly refers to it. How can I eliminate this reference? If I just simply delete it it causes a SIGSEGV error.
Thank you for your help.

mrjj

@gabor53 said:

Review::on_pushButton_Submit_clicked()'

hi
Delete the moc file
Remove the slot from
Review.h
Clean all, rebuild all, maybe run qmake
and it should be gone.

gabor53

@mrjj
I did as you told. The original problem is gone. Instead I get a few dozen new error messages. At additem.h I have this code:


namespace Ui {
class Additem;
}
class Additem : public QDialog
{
    Q_OBJECT

public:
    explicit Additem(QWidget *parent = 0);
    ~Additem();

For the class Additem row it gives the following error message:
C:\Programming\Projects\Folkfriends_1\additem.cpp:6: error: invalid use of incomplete type 'class Ui::Additem'
ui(new Ui::Additem)
^
I assume all the other error messages come from the fact that the class definition is somehow incorrect. What is wrong with it? It used to work...

jsulm

@gabor53 Looks like moc is not executed for additem. Did you rerun qmake and rebuild? Were ui_additem.h/cpp generated? Did you include ui_additem.h in additem.cpp?

gabor53

@jsulm I checked those files and the ui files were missing from the cpps. After fixing I get a new problem. In moc_mainwindow.cpp there is a line that crashes the program:

const QMetaObject *MainWindow::metaObject() const
{
    return QObject::d_ptr->metaObject ? QObject::d_ptr->dynamicMetaObject() : &staticMetaObject;
}

According to the debugger the line starting with return crashes the program. What can I do with it? (I ran clean and rebuild and qmake already.) I also noticed that I have Qt 5.7 but it runs with the Desktop Qt 5.6.1 MinGW 32bit. Can this be a problem?

jsulm

@gabor53 Do you call base class constructor in MainWindow constructor?
Can you show MainWindow?
If you build your application with Qt 5.7 then you should execute it with 5.7

gabor53

@jsulm Here is the code:

mainwindow.h
mainwindow.cpp
moc_mainwindow.cpp

Thank you for your help.