Dfyjkt

I am trying to connect row selections from two QTableWidget.
I mean, when I select one row in Table 1, I want my program selects the same row in table 2. The two table dont have the same number of column so I cannot just select one item for the first and select the same item on the second able.
I have tried to use the following without success:

connect(ui->table1->selectionModel(), SIGNAL(currentRowChanged(QModelIndex, QModelIndex)), ui->table2->selectionModel(), SLOT(setCurrentIndex(QModelIndex)));

It is written:

QObject::connect: No such slot QItemSelectionModel::setCurrentIndex(QModelIndex)

Do you know what is going wrong?

The problem is caused because setCurrentIndex() has two parameters, and not just one, plus the signatures do not match. So in these cases you should use a lambda and use selectRow():

#include <QApplication>
#include <QHBoxLayout>
#include <QTableWidget>
#include <QItemSelectionModel>

int main(int argc, char *argv)

 QApplication a(argc, argv);
 auto *table1 = new QTableWidget(4, 3);
 table1->setSelectionBehavior(QAbstractItemView::SelectRows);
 auto table2 = new QTableWidget(4, 4);
 table2->setSelectionBehavior(QAbstractItemView::SelectRows);

 QObject::connect(table1->selectionModel(), &QItemSelectionModel::currentRowChanged,
 [table2](const QModelIndex &current, const QModelIndex & previous)
 
 if(previous.isValid())
 table2->selectRow(current.row());
 );

 QWidget w;
 auto lay = new QHBoxLayout(&w);
 lay->addWidget(table1);
 lay->addWidget(table2);
 w.show();

 return a.exec();