QMessageBox::warning(this, tr("My Application"), tr("The document has been modified.\n" "Do you want to save your changes?"), QMessageBox::Save | QMessageBox::Discard | QMessageBox::Cancel, QMessageBox::Save);
C++ (Qt)using namespace std;
C++ (Qt)using std::string;
C++ (Qt)using mytype = std::string;
C++ (Qt)typedef std::string mytype;