error: ‘InsertAtTop‘ was not declared in this scope

Qt编译错误记录：

报错：error: ‘InsertAtTop’ was not declared in this scope

ui->comboBoxJob->setInsertPolicy(InsertAtTop);

这行代码在Qt中编译就会报这个错误，原因是输入参数需要加类名限定，改为：

ui->comboBoxJob->setInsertPolicy(QComboBox::InsertAtTop);

这样就好了。