准确答案:是不可能的 https://doc.qt.io/qt-5/why-moc.html
解决方法:您可以使用新的信号和槽语法执行类似的操作:
QSlider *slid = new QSlider;
QLineEdit *lne = new QLineEdit;
connect(slid,&QSlider::valueChanged,this,&MainWindow::random);
connect(lne,&QLineEdit::textChanged,this,&MainWindow::random);
lne->show();
slid->show();
Slot:
void MainWindow::random(QVariant var)
{
qDebug() << var;
}
Output:
QVariant(int, 11)
QVariant(int, 12)
QVariant(int, 13)
QVariant(int, 14)
QVariant(int, 16)
QVariant(QString, "c")
QVariant(QString, "cv")
QVariant(QString, "cvb")
QVariant(QString, "cvbc")
QVariant(QString, "cvbcv")
Why? http://qt-project.org/wiki/New_Signal_Slot_Syntax http://qt-project.org/wiki/New_Signal_Slot_Syntax
如果存在隐式,可以自动转换类型
转换(例如从 QString 到 QVariant)