Getting QTableWidgetItem out of cellWidget()'s QCheckBox - qt

Question

I'm storing QCheckBox in QTableWidget, in following way:
QCheckBox *checkBox = new QCheckBox();
QWidget *widget = new QWidget();
QHBoxLayout *layout = new QHBoxLayout(widget);
layout->addWidget(checkBox);
layout->setAlignment(Qt::AlignCenter);
layout->setContentsMargins(0,0,0,0);
widget->setLayout(layout);
tableWidget->setCellWidget(row, 2, widget);
Then, I catch stateChanged() of the checkBox:
connect( checkBox, SIGNAL(stateChanged(int)), this, SLOT(checkBoxStateChanged(int)) );
void MainWindow::checkBoxStateChanged(int)
{
QCheckBox * box = qobject_cast< QCheckBox * >( sender() );
if( !box ) {
return;
}
}
Now, I can get to QTableWidget – it is box->parent()->parent()->parent(). Object before that, i.e. box->parent()->parent(), is qt_scrollarea_viewport (that's objectName()). I've searched children of the "viewport", and there's 16 QWidgets – the number of rows in my table. However, their children are only QHBoxLayout and QCheckBox. There apparently is no reference to QTableWidgetItem – it looks like if I were in some parallel object hierarchy, and QTableWidgetItem is in other hierarchy. Is that true? How to get the item?

Answer 1

See this question: How to work with signals from QTableWidget cell with cellWidget set
Adapted to you case:
void MainWindow::checkBoxStateChanged(int)
{
QCheckBox * box = qobject_cast< QCheckBox * >( sender() );
if (box)
{
int row = box->property("row").toInt();
int column = box->property("column").toInt();
QTableWidgetItem* item = tableWidget->item(row, column);
}
}