Linker error with qt

[Xx r3negade]

I am new to Qt. I created a basic form with 4 buttons: btn_DoSomething , btn_Clear, btn_About, btn_Browse. I used qmake-qt4 to generate the header file containing my form info (ui_myqtapp.h).

I then created this header file:

// myqtapp.h:

#ifndef MYQTAPP_H
#define MYQTAPP_H

#include "ui_myqtapp.h"

class myQtApp : public QWidget, private Ui::frmMain
{
    Q_OBJECT
    public:
        myQtApp(QWidget* parent = 0);
    public slots:
        void getPath();
        void doSomething();
        void clear();
        void about();
};

#endif

Looks good so far, right? Then I implemented the functions defined in the slots, and connected them to the 4 buttons:

// myqtapp.cpp:

#include <QtGui>
// if we include <QtGui> there is no need to include every class used: <QString>, <QFileDialog>,...
#include "myqtapp.h"

myQtApp::myQtApp( QWidget* parent )
{
    setupUi(this); // Set up the GUI

    // signals / slots mechanisms in action -> link a action in the GUI to a subroutine in this class
    connect( btn_Browse,    SIGNAL(clicked()),  this,   SLOT(getPath())     );
    connect(btn_DoSomething,SIGNAL(clicked()),  this,   SLOT(doSomething()) );
    connect( btn_Clear,     SIGNAL(clicked()),  this,   SLOT(clear())       );
    connect( btn_About,     SIGNAL(clicked()),  this,   SLOT(about())       );
}

Finally, I created the "main" file:

// main.cpp:

#include <QApplication>
#include "myqtapp.h"
int main(int argc, char* argv[])

{
    QApplication app(argc, argv);

    myQtApp* dialog = new myQtApp;

    dialog->show();
    return app.exec();
}

It compiles fine but I get this linker error:

/home/jBrandt/Code/qt/myqtapp.cpp|5|undefined reference to `vtable for myQtApp'|

in line 5 of myqtapp.cpp (myQtApp::myQtA pp( QWidget* parent ))

[Xx r3negade]

I know I'm not the only one here who uses Qt. I need an answer.

[Banfa]

A quick google turned up this http://doc.trolltech.com/3.1/commonp...html#linkerror