QTableView with a checkbox

[jpn]

Allocate the delegate object on the heap so it won't get destroyed as soon as it gets out of scope:

checkboxDelegate* delegate = new checkboxDelegate(this);
ui.tableTV->setItemDelegate(delegate);

checkboxDelegate* delegate = new checkboxDelegate(this);
ui.tableTV->setItemDelegate(delegate);

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Edit: oops, forgot the important keyword new