context menu not displaying

[aurora]

I created a table inside a function and connect as below...

filesTable= new QTableWidget(this);

connect(filesTable,SIGNAL(customContextMenuRequest ed(QPoint)),this,SLOT(ProvideContextMenu(QPoint))) ;

but, it is not generating signal, i am unable too see any context menu over there...

[AlexSudnik]

customContextMenuRequested() signal is only emitted with ContextMenuPolicy set to Qt::CustomContextMenu , so you

need to add this:

filesTable->setContextMenuPolicy(Qt::CustomContextMenu);

*and why did you leave a whitespace in "SIGNAL(customContextMenuRequest_ed(QPoint)

[aurora]

Thank u so much Alex...
But problem is that context menu is not displaying where mouse pointer is...It is displaying somewhere else..
What changes i need to do?
my code as shown below...

void MainWindow::ProvideContextMenu(const QPoint &pos)
{
    QTableWidgetItem *item=filesTable->itemAt(pos);
 
    QString cell=item->text();
            cout<<"EVENT GENERATED..."<<cell.toStdString()<<endl;
 
    QAction *pAddAction= new QAction("add",filesTable);
    QAction *pSplitAction= new QAction("SPLIT",filesTable);
    QMenu *pContextMenu = new QMenu( this);
    pContextMenu->addAction(pAddAction);
    pContextMenu->addAction(pSplitAction);
    pContextMenu->exec(mapToGlobal(pos));
 
}

void MainWindow::ProvideContextMenu(const QPoint &pos)
{
    QTableWidgetItem *item=filesTable->itemAt(pos);

    QString cell=item->text();
            cout<<"EVENT GENERATED..."<<cell.toStdString()<<endl;
    
    QAction *pAddAction= new QAction("add",filesTable);
    QAction *pSplitAction= new QAction("SPLIT",filesTable);
    QMenu *pContextMenu = new QMenu( this);
    pContextMenu->addAction(pAddAction);
    pContextMenu->addAction(pSplitAction);
    pContextMenu->exec(mapToGlobal(pos));

}

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[AlexSudnik]

Coordinate transformations might be tricky...Here is a code snippet i used long time ago...and the thing is that i'm not sure if i figured it out completely back then...cuz i had the same problem.

//..
 
view = new QTableView;
 
// ...
 
void Widget::customContextMenuRequested(const QPoint &point)
{
 
QModelIndex index  = view->indexAt(point);
 
	if( index.isValid() )
	{
 
		QPoint viewPortPosition = view->pos();
 
		int headerOffset = view->horizontalHeader()->sectionSize(0);
 
		int adjustedHeight = viewPortPos.y() + headerOffset;
 
		viewPortPos.setY(adjustedHeight);
 
		QMenu menu;
 
                // ...
 
		menu.exec( mapToGlobal(QPoint( viewPortPos + point )  ) );
 
	}
 
}

//..

view = new QTableView;

// ...

void Widget::customContextMenuRequested(const QPoint &point)
{

QModelIndex index  = view->indexAt(point);

	if( index.isValid() )
	{
	
		QPoint viewPortPosition = view->pos();

		int headerOffset = view->horizontalHeader()->sectionSize(0);
		
		int adjustedHeight = viewPortPos.y() + headerOffset;
		
		viewPortPos.setY(adjustedHeight);

		QMenu menu;
                
                // ...

		menu.exec( mapToGlobal(QPoint( viewPortPos + point )  ) );

	}
	
}

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Even thought i've used QTableView , i'm sure it's gonna give you an idea...If you find that there is something wrong with my implementation (i'm sure there is) , i'd be glad to hear the right way to do it!^^

[aurora]

hmmm...not working...

[ChrisW67]

*and why did you leave a whitespace in "SIGNAL(customContextMenuRequest_ed(QPoint)

The space is inserted by the forum to break up long "words" when the poster cannot be bothered to use [code][/code] tags around code.

[AlexSudnik]

You still have it appearing in the wrong space ? If so...you just want to use QTableWidget's context menu , right ?

P.S : ChrisW67 - thanks^^ , i see now^^

[aurora]

ya right now i'm using QTable widget but thinking to change it table view.....

[thomas@itest]

Hi !
I use :

menu.exec(QCursor::pos())

menu.exec(QCursor::pos())

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[AlexSudnik]

Hmm , try this:

void Widget::ProvideContextMenu( const QPoint& position )
{
 
QModelIndex index  = indexAt(position);
 
	if( index.isValid( ) ) // not neccessary , if you're about to perform item-independent actions 
	{
 
		QMenu menu;
 
 
		QAction menuAction(this);
 
		menuAction.setText("Demonstrational Text");
 
 
		menu.addAction(&menuAction);
 
		menu.exec( mapToGlobal( position ) );
 
 
	}
 
 
}

void Widget::ProvideContextMenu( const QPoint& position )
{

QModelIndex index  = indexAt(position);

	if( index.isValid( ) ) // not neccessary , if you're about to perform item-independent actions 
	{
			
		QMenu menu;

		
		QAction menuAction(this);
		
		menuAction.setText("Demonstrational Text");
		
	
		menu.addAction(&menuAction);
		
		menu.exec( mapToGlobal( position ) );
	
	
	}


}

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Since initial point coordinates are given in the widget's local space (i mean , not in QWidget * QAbstractScrollArea::viewport () coordinates ) , we have to display it in the same space , using mapToGlobal function.