QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Yes | QDialogButtonBox::No | QDialogButtonBox::Cancel);
QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::ReadOnly | QDialogButtonBox::Apply);These examples use the Qt library (specifically the QDialogButtonBox class), which is a popular C++ GUI library.