qt组合框

Question

我正在尝试使用插槽连接三个组合框，但它在“＆amp; QComboBox :: currentIndexChanged”中显示错误，并且＆amp; amp;也是一个错误。

connect(ptrcomboBox1, &QComboBox::currentIndexChanged, this, &DynRefWizardPage::on_comboBox_currentIndexChanged);

connect(ptrcomboBox2, &QComboBox::currentIndexChanged, this, &DynRefWizardPage::on_comboBox_currentIndexChanged);

connect(ptrcomboBox3, &QComboBox::currentIndexChanged, this, &DynRefWizardPage::on_comboBox_currentIndexChanged);

我无法理解文档中提供的sytax，是否有人可以向我提供我的案例语法？