Trouble embedding a QComboBox in a QTableWidget - c++

Question

I'm making a GUI using QT, and I'd like to have the final entry in my table be a combo box. The idea is to allow the user to chose new items to put in the table from a drop-down list.
What I seem to be having trouble with is embedding this combo box inside a table cell. I've tried this:
table_widget = new QTableWidget(1, 9, Dialog);
table_widget->setObjectName(QStringLiteral("table_widget"));
add_part_combo = new QComboBox(table_widget);
add_part_combo->setObjectName(QStringLiteral("add_part_menu"));
add_part_combo->addItem(QStringLiteral("Import New Items..."));
table_widget->setCellWidget(1, 1, add_part_combo);
If I construct the combo box with Dialog, it puts the combo box in the upper left corner of the dialog (somewhat under the table). If I instead construct it with table_widget, the combo box appears in the upper left of the table (on top of the first header cell). If I don't supply a parent widget, then it doesn't appear at all.
But in no circumstance does the widget actually appear in cell 1,1.
What am I doing wrong?

Answer 1

The row and column parameters passed to setCellWidget are zero-indexed. Also, you don't need to provide a parent for the QComboBox since the QTableWidget will assume ownership of it when you call setCellWidget. As such, your code should be as follows:
add_part_combo = new QComboBox;
add_part_combo->setObjectName(QStringLiteral("add_part_menu"));
add_part_combo->addItem(QStringLiteral("Import New Items..."));
// Note: Row and column 0, not 1.
table_widget->setCellWidget(0, 0, add_part_combo);