[Qt-interest] the method "indexOfMethod" always return "-1",why?

[Yao Huiji]

Hi,

sorry for my newbie question. when I call "indexOfMethod" ,the return value
always is "-1",I don't konw why,can you help me?


#include <QtCore/QCoreApplication>

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    QString
str(QString("%1").arg(a.metaObject()->indexOfMethod("aboutToQuit")));

    printf(str.toStdString().c_str());

    return a.exec();
}
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