Adding right click menu on QTableWidget

[deleted286]

Is it possible to right click a table widget and select one element, and doing some operation after it?

[JonB]

@suslucoder
Yes.

You might start by reading e.g. https://forum.qt.io/topic/94905/simpliest-way-for-creating-contextmenu-for-qtablewidget-cells

[deleted286]

@JonB Thank you. I did my right click menu.

I want to draw a chart when i clicked this menu.
I have these, im adding values into the series on my timer_slot.
How can i do it, when i clicked my menu item, it should create a chart.

```

ui->setupUi(this);
    tableWidget = new QTableWidget();
    timer = new QTimer();

   connect(timer, SIGNAL(timeout()), SLOT(Timer_Slot()));
    timer->start(500);

   grafik_olustur();

void VeriGoster::grafik_olustur()
{
    chart = new QChart();
    series = new QLineSeries();
    series->setName(srAd);
    series->setColor("green");
    chart->addSeries(series);
    chart->legend()->setVisible(true);
    chart->setAnimationOptions(QChart::AllAnimations);

QValueAxis *axisX = new QValueAxis();
axisX->setTickCount(5);
axisX->setRange(0, +2);
chart->addAxis(axisX, Qt::AlignBottom);
series->attachAxis(axisX);

QValueAxis *axisY = new QValueAxis;
axisY->setTickCount(5);
axisY->setRange(0,2);
chart->addAxis(axisY, Qt::AlignLeft);
series->attachAxis(axisY);

chartView = new QChartView(chart);
chartView->setRenderHint(QPainter::Antialiasing);
ui->gridLayout->addWidget(chartView);

}

void VeriGoster::Timer_Slot()
{
    static float q_x=0;
    if(!queue.isEmpty())
    {
       double num=queue.dequeue();
       q_x += 0.1;
       series->append(q_x, num);
       chart->update();

   qDebug() << q_x << num;
 }

}

void VeriGoster::on_tableWidget_customContextMenuRequested(const QPoint &pos)
{
QMenu *menu = new QMenu(this);
QAction *ciz = new QAction("Grafik Çiz");
connect(ciz, SIGNAL(triggered()), this, SLOT(grafik_olustur()));
menu->addAction(ciz);
menu->popup(ui->tableWidget->viewport()->mapToGlobal(pos));
}

[SGaist]

Hi,

What exactly is your issue ?
Is your slot called ?
What do you expect ?
What do you get ?

[deleted286]

@SGaist My issue is, when i clicked the "draw", whick is a right click menu item on my table,
i want to start adding datas to my chart.

I have timer slot for adding datas in series, and i have the above code script which is my right click menu.
My question is how can i connect them for when i clicked it goes to timer slot and start drawing chart

void VeriGoster::on_tableWidget_customContextMenuRequested(const QPoint &pos)
{
QMenu *menu = new QMenu(this);
QAction *ciz = new QAction("draw");
menu->addAction(ciz);
menu->popup(ui->tableWidget->viewport()->mapToGlobal(pos));
}

[SGaist]

That's what is no clear.

Your timer is already running and you already called the slot in your constructor.

[JonB]

@suslucoder
Like @SGaist said, it's not clear what you mean as the timer is already running and doing the drawing.

Purely at a guess, maybe you interested in starting and stopping the timer/drawing from the action? In which case you could call timer->stop/start() to stop/start the timer as desired?

[nagesh]

@suslucoder not able to clearly understand the question?
Currently following code is called in the constructor.

timer->start(500);
grafik_olustur();

if you want to create the chart only during right click, comment above lines from constructor.

grafik_olustur(); //create chart first
timer->start(500); //adds values to chart

[deleted286]

@nagesh said in Adding right click menu on QTableWidget:

@suslucoder

if you want to create the chart only during right click, comment above lines from constructor.

grafik_olustur(); //create chart first
timer->start(500); //adds values to chart

this was the answer im searching for. Sorry for, i couldnt explain my question clearly.