Question

Suppose I fill some cells of a QTableWidget with buttons:

ui->table->setCellWidget (i, 2, new QPushButton ("Details"));

Just a little bit later I scratch them all and do it again:

ui->table->clear();

Will this buttons get deleted automagically? Or do I need to store a list of them and delete manually? Also, Do I need to specify parent for every button like this: QPushButton ("Details", ui->table)?

Answer 1

The table widget takes ownership of the widget. The documentation states this:

Sets the given widget to be displayed in the cell in the given row and column, passing the ownership of the widget to the table.

You also don’t need to specify a parent on creation, that will be set by the tablewidget accordingly.