Context menu on Cells of QTableWidget

[core_st]

I'm sorry that i created another topic about QTableWidget and Context menu, but after reading previous topics i could not realize the problem. So, please help me.

i have QTableWidget on form. It's used for list of files. Table has 2 columns. First - it's number of row, second - name of file. So, i need create context menu, which will open only by click on tableWidget. That's not all. Also i need to check: click was performed on cell or on empty table?

if found an example of context menu:
in header:

void contextMenuEvent( QContextMenuEvent * e );

void contextMenuEvent( QContextMenuEvent * e );

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then somewhere:

QObject::connect (ui->tableWidget,SIGNAL(customContextMenuRequested(const QPoint &)),this,SLOT(contextMenuEvent(QContextMenuEvent*)));

QObject::connect (ui->tableWidget,SIGNAL(customContextMenuRequested(const QPoint &)),this,SLOT(contextMenuEvent(QContextMenuEvent*)));

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and :

void MainWindow::contextMenuEvent( QContextMenuEvent * e )
    {
 
        QAction *pRemoveAction = new QAction("Remove from list",this);
   /*in this place i need something like 
if(cell_click())pRemoveAction->setEnabled(true); else 
pRemoveAction->setEnabled(true);
*/
            connect(pRemoveAction ,SIGNAL(triggered()),this,SLOT(toolButton_DeleteTrack_Clicked()));
            //
            QMenu *pContextMenu = new QMenu( this);
            pContextMenu->addAction(pRemoveAction );
            //
            pContextMenu->exec( e->globalPos() );
 
            delete pContextMenu;
            pContextMenu = NULL;
}

void MainWindow::contextMenuEvent( QContextMenuEvent * e )
    {

        QAction *pRemoveAction = new QAction("Remove from list",this);
   /*in this place i need something like 
if(cell_click())pRemoveAction->setEnabled(true); else 
pRemoveAction->setEnabled(true);
*/
            connect(pRemoveAction ,SIGNAL(triggered()),this,SLOT(toolButton_DeleteTrack_Clicked()));
            //
            QMenu *pContextMenu = new QMenu( this);
            pContextMenu->addAction(pRemoveAction );
            //
            pContextMenu->exec( e->globalPos() );

            delete pContextMenu;
            pContextMenu = NULL;
}

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but this menu is open after clicking anywhere on the form((
P.S. Sorry for my bad English