How to get the row value from Qtable widget

ManiRon

Actually i am inserting combo box in one column on my table and when one of the combo box from the table is selected i want to get the row value . How this can be done ?

void MainWindow::on_tableWidget_clicked(const QModelIndex &index)
{
qDebug("ROW %d",index.row());
}

I tried something like this but it didnt give the row value where i have inserted the combo box and from other places it was returning the row value

Gojir4

@ManiRon

void MainWindow::on_tableWidget_clicked(const QModelIndex &index)
{
     qDebug() << "ROW: " << index.row();
    qDebug() << "TEXT: " << itemFromIndex(index).text();
     if(index.column() == COLUMN_COMBOBOX) //Check it is the "ComboBox" column
         //Do something with value
}

ManiRon

@Gojir4 when i click on the combo box nothing is triggred from the QTablewidget so i couldnt find the row value for that

Gojir4

@ManiRon Ok, here is another approach (I didn't test the code, it mays have errors)

//At initilization
QComboBox *cb = new QComboBox;
cb.setProperty("row", row);
connect(cb, qOverload<int>(&QComboBox::currentIndexChanged), this, &MainWindow::onCbIndexChanged)
myTableWidget->setCellWidget(row, column, cb);

//...
//On Combo Box Index changed
void MainWindow::onCbIndexChanged(int index){
    QObject *cb = sender();
    const int row = cb->property("row");

    int comboBoxSelectionIndex = index;

    qDebug() << "ROW: " << row;
    qDebug() << "Index: " << index << "  value: " << cb.currentText();
    
}

inspired from here: https://www.qtcentre.org/threads/66573-How-to-get-signal-when-checkbox-in-table-cell-changed

mrjj

Hi
Just as a note
Using a combo box delegate instead of setCellWidget have better performance and overall just feels
nicer than a floating widget. (IMHO)
basic example:
https://github.com/daviddoria/QtExamples/blob/master/Delegates/ComboBoxDelegate/ComboBoxDelegate.cpp

VRonin

@ManiRon said in How to get the row value from Qtable widget:

when i click on the combo box nothing is triggred

because setIndexWidget is PURE EVIL

Follow @mrjj 's suggestion. Ther's also a wiki page on this topic: https://wiki.qt.io/Combo_Boxes_in_Item_Views

ManiRon

@mrjj I am not understanding how this works , whether any sample will be available other than this

VRonin

https://doc.qt.io/qt-5/model-view-programming.html#delegate-classes