Signal when end edit Item

Hi all!

I'm a beginner in QT.
I've a QTableWidget (name: tmp_table), and i putting Items on it by:

Code:

---

QTableWidgetItem *newItem1 = new QTableWidgetItem(tr("%1").arg(query.value(1).toString()));
        tmp_table->setItem(row, col++, newItem1);

---

Items are editable (on click or press F2).

I would like to call ex. some_function() (ex. save value in the database) when user end editing a datan int to a QTableWidgetItem.
How can I do it?

Thaks a lot!

have a look at this signal QTableWidget::itemChanged.

I've tried this :/

Unfortunately itemChanged is calling when Item are creating and putting into TableWiew, non when user end editing :/

I dont understand. do you need to process an user's input in an item widget?

The right signal should be QTableWidget::cellChanged ( int row, int column ). It is emitted when the content has changed = editing finished.

Quote:

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Originally Posted by Lykurg

The right signal should be QTableWidget::cellChanged ( int row, int column ). It is emitted when the content has changed = editing finished.

---

it's almost equal to that which I specified

Code:

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void QTableWidgetPrivate::_q_emitItemChanged(const QModelIndex &index)
{
    Q_Q(QTableWidget);
    if (QTableWidgetItem *item = model()->item(index))
        emit q->itemChanged(item);
    emit q->cellChanged(index.row(), index.column());
}

---

:)

See QxtTableWidget.

Quote:

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Originally Posted by spirit

it's almost equal to that which I specified

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Right, I see, while switching from the forum to the docs my brain substitute itemChanged with currentItemChanged which leads to my superfluous reply... :o

Quote:

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Originally Posted by spirit

I dont understand. do you need to process an user's input in an item widget?

---

I need to save data (call function, save_data() ) when user change text in Item.

maybe it's not a best solution,but anyway, block signals when you create items and then you can use itemChanged or cellChanged. :)

Quote:

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Originally Posted by spirit

maybe it's not a best solution,but anyway, block signals when you create items and then you can use itemChanged or cellChanged. :)

---

ok! It's seems to work cellChanged, almost:

how to disable cellChange when I'm creating and putting Item into TableWiew:

Code:

---

QTableWidgetItem *newItem1 = new QTableWidgetItem(tr("%1").arg(query.value(1).toString()));
        tmp_table->setItem(row, col++, newItem1);

---

?

try this

Code:

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const bool isBlocked = tmp_table->blockSignals(true);
//add items here
tmp_table->blockSignals(isBlocked);

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I haven't tested with QTableWidget, but I know that with QListWidget there's a much better solution than using QListWidget::itemChanged and trying to block all the signals when adding/changing colors/setting flags, and doing anything else that "changes" the item.

Try this...

Code:

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connect(ui.pTblItems->itemDelegate(), &QAbstractItemDelegate::commitData, this, &MyWidget::OnTblItemsCommitData);

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Then implement the slot like this...

Code:

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void MyWidget::OnTblItemsCommitData(QWidget* pLineEdit)
{
        QString strNewText = reinterpret_cast<QLineEdit*>(pLineEdit)->text();
	int nRow = ui.pTblItems->currentRow();
        // do whatever you need here....
}

---

Like I said... I only tried this for QListWidget, so who knows it might not work at all for the table widget, but the two classes are pretty similar so I wouldn't be surprised if it worked. You might have to tweak that code a bit to make it table widget specific.