Qt c ++字符串中的.arg错误(Qt c++ .arg error in string)

 我收到了错误：请求成员'arg'在'（“学生编号：％1模块代码：％2标记：％3”）'，这是非类型'const char [43] 
 
 无法弄清楚为什么我收到这个错误 
 
 这是产生错误的函数： 
 
void StudentForm::displayForm(){
    QMessageBox box;
    box.setIcon(QMessageBox::Information);
    stuNum = stuEdt->text().toInt();
    mark = markSbx->text().toInt();
    modCode = codeEdt->text();
    QString t = ("Student number:%1 Module Code: %2 Mark: %3").arg(stuNum).arg(modCode).arg(mark);
    box.setText(t);
    box.exec();
}
 
 如果我需要更多的代码等，请告诉我。谢谢 

I have been getting the error: request for member 'arg' in '("Student number:%1 Module Code: %2 Mark: %3")', which is of non-class type 'const char [43]
 
can't figure out why I'm getting this error
 
here is the function that produces the error:
 
void StudentForm::displayForm(){
    QMessageBox box;
    box.setIcon(QMessageBox::Information);
    stuNum = stuEdt->text().toInt();
    mark = markSbx->text().toInt();
    modCode = codeEdt->text();
    QString t = ("Student number:%1 Module Code: %2 Mark: %3").arg(stuNum).arg(modCode).arg(mark);
    box.setText(t);
    box.exec();
}
 
let me know if I need to put more of the code up etc. Thanks

原文：https://stackoverflow.com/questions/18472791