Qt: TableWidget's ItemAt() acting weirdly
- by emredog
Hi,
i'm working on a windows application, where in a dialog i query some data from Postgres, and manually show the output in a table widget.
m_ui->tableWidget->setRowCount(joinedData.count());
for(int i=0; i<joinedData.count(); i++) //for each row
{
m_ui->tableWidget->setItem(i, 0, new QTableWidgetItem(joinedData[i].bobin.referenceNumber));
m_ui->tableWidget->setItem(i, 1, new QTableWidgetItem(QString::number(joinedData[i].bobin.width)));
m_ui->tableWidget->setItem(i, 2, new QTableWidgetItem(QString::number(joinedData[i].tolerance.getHole())));
m_ui->tableWidget->setItem(i, 3, new QTableWidgetItem(QString::number(joinedData[i].tolerance.getLessThanZeroFive()))); m_ui->tableWidget->setItem(i, 4, new QTableWidgetItem(QString::number(joinedData[i].tolerance.getZeroFive_to_zeroSeven())));
m_ui->tableWidget->setItem(i, 5, new QTableWidgetItem(QString::number(joinedData[i].tolerance.getZeroFive_to_zeroSeven_repetitive())));
m_ui->tableWidget->setItem(i, 6, new QTableWidgetItem(QString::number(joinedData[i].tolerance.getZeroSeven_to_Three())));
m_ui->tableWidget->setItem(i, 7, new QTableWidgetItem(QString::number(joinedData[i].tolerance.getThree_to_five())));
m_ui->tableWidget->setItem(i, 8, new QTableWidgetItem(QString::number(joinedData[i].tolerance.getMoreThanFive())));
}
Also, based on row and column information, i paint some of these tablewidgetitems to some colors, but i don't think it's relevant.
I reimplemented the QDialog's contextMenuEvent, to obtain the right clicked tableWidgetItem's row and column coordinates:
void BobinFlanView::contextMenuEvent(QContextMenuEvent *event)
{
QMenu menu(m_ui->tableWidget);
//standard actions
menu.addAction(this->markInactiveAction);
menu.addAction(this->markActiveAction);
menu.addSeparator();
menu.addAction(this->exportAction);
menu.addAction(this->exportAllAction);
//obtain the rightClickedItem
QTableWidgetItem* clickedItem = m_ui->tableWidget->itemAt(m_ui->tableWidget->mapFromGlobal(event->globalPos()));
// if it's a colored one, add some more actions
if (clickedItem && clickedItem->column()>1 && clickedItem->row()>0)
{
//this is a property, i'm keeping this for a later use
this->lastRightClickedItem = clickedItem;
//debug purpose:
QMessageBox::information(this, "", QString("clickedItem = %1, %2").arg(clickedItem->row()).arg(clickedItem->column()));
QMessageBox::information(this, "", QString("globalClick = %1, %2\ntransformedPos = %3, %4").arg(event->globalX()).arg(event->globalY())
.arg(m_ui->tableWidget->mapFromGlobal(event->globalPos()).x()).arg(m_ui->tableWidget->mapFromGlobal(event->globalPos()).y()));
menu.addSeparator();
menu.addAction(this->changeSelectedToleranceToUygun);
menu.addAction(this->changeSelectedToleranceToUyar);
menu.addAction(this->changeSelectedToleranceToDurdurUyar);
//... some other irrevelant 'enable/disable' activities
menu.exec(event->globalPos());
}
The problem is, when i right click on the same item i get the same global coordinates, but randomly different row-column information. For instance, the global pos is exactly 600,230 but row-column pair is randomly (5,3) and (4,3). I mean, what?!
Also, when i click to an item from the last to rows (later than 13, i guess) will never go into condition "if (clickedItem && clickedItem-column()1 && clickedItem-row()0)", i think it's mainly because 'clickedItem' is null.
I'll be more than glad to share any more information, or even the full cpp-h-ui trio in order to get help.
Thanks a lot.
