[SOLVED] problem in signal/slot for QPushButton

[kamlmish]

Hi
I have a button created in mainwindow and I connect the button "clicked " signal to the slot.
But I think Theres issue in the connection , thats the reason the slot is not called for the same

MainWindow::MainWindow()
{
    //window specs
    setWindowTitle(tr("GALLERY"));
    resize(1350,1700);
    //Allocation of items
    settTree = new SettingsTree(this);
    settTree->setGeometry(10,10,250,420);
    listwidget = new QListWidget(this);
    grid_button = new QPushButton(this);
    grid_button->setGeometry(39,670,31,22);
    list_button = new QPushButton(this);
    addbutton = new QPushButton(this);
    deletebutton = new QPushButton(this);
    objectbutton = new QPushButton(this);
    pf = new PanelFrame(this);
    m_CheckBox = new QCheckBox(this);
    m_CheckBox->setGeometry(230,14,21,21);
    state = Qt::Unchecked;
    m_Slider = new QSlider(Qt::Horizontal,this);
    m_Slider->setGeometry(160,672,101,21);
 
    //previewpane
/*    previewpane = new QStandardItemModel(8,3,this);
    setupmodel();
    setupview();
*/
 
    //functions to be called
    Menu();
 
    //connections:signal & slots
    connect(list_button,SIGNAL(clicked()),this,SLOT(listdisplay()),Qt::DirectConnection);
    connect(m_CheckBox,SIGNAL(stateChanged(int)),this,SLOT(isMainWindowDocked()),Qt::AutoConnection);
    [B]connect(addbutton,SIGNAL(clicked()),this,SLOT(appLauncher()),Qt::DirectConnection);[/B]
    //connect(&process,SIGNAL(error(QProcess::ProcessError)),this,SLOT(processerror(QProcess::ProcessError)),Qt::AutoConnection);
 
}
 
SLOT function
 
[code]
void MainWindow::appLauncher()
{
    qDebug()<<"App Launcher";
    QString app = "/home/kamlesh/Gall/AddFolder/AddFolder-build-desktop/AddFolder";
    process.start(app);
}

MainWindow::MainWindow()
{
    //window specs
    setWindowTitle(tr("GALLERY"));
    resize(1350,1700);
    //Allocation of items
    settTree = new SettingsTree(this);
    settTree->setGeometry(10,10,250,420);
    listwidget = new QListWidget(this);
    grid_button = new QPushButton(this);
    grid_button->setGeometry(39,670,31,22);
    list_button = new QPushButton(this);
    addbutton = new QPushButton(this);
    deletebutton = new QPushButton(this);
    objectbutton = new QPushButton(this);
    pf = new PanelFrame(this);
    m_CheckBox = new QCheckBox(this);
    m_CheckBox->setGeometry(230,14,21,21);
    state = Qt::Unchecked;
    m_Slider = new QSlider(Qt::Horizontal,this);
    m_Slider->setGeometry(160,672,101,21);

    //previewpane
/*    previewpane = new QStandardItemModel(8,3,this);
    setupmodel();
    setupview();
*/

    //functions to be called
    Menu();

    //connections:signal & slots
    connect(list_button,SIGNAL(clicked()),this,SLOT(listdisplay()),Qt::DirectConnection);
    connect(m_CheckBox,SIGNAL(stateChanged(int)),this,SLOT(isMainWindowDocked()),Qt::AutoConnection);
    [B]connect(addbutton,SIGNAL(clicked()),this,SLOT(appLauncher()),Qt::DirectConnection);[/B]
    //connect(&process,SIGNAL(error(QProcess::ProcessError)),this,SLOT(processerror(QProcess::ProcessError)),Qt::AutoConnection);

}

SLOT function

[code]
void MainWindow::appLauncher()
{
    qDebug()<<"App Launcher";
    QString app = "/home/kamlesh/Gall/AddFolder/AddFolder-build-desktop/AddFolder";
    process.start(app);
}

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[/code]