How can I change the pointSize of a QLabel?

Z3PHYR

I tried this, but the font just be default

auto *animation = new QPropertyAnimation(&lyrics[i], "font");
animation->setDuration(200);
animation->setStartValue(lyrics[i].font());
animation->setEndValue(QFont("Noto Sans CJK SC Medium", 18, QFont::Bold;
animation->setEasingCurve(QEasingCurve::OutQuad);
animation->start(QAbstractAnimation::DeleteWhenStopped);

JonB

@Z3PHYR
This attempts to animate/increment a QFont object, which of course makes no sense --- what could it mean/how could it be achieved? You want to animate the font size, which is a number. The types which you can animate are listed in https://doc.qt.io/qt-6/qvariantanimation.html#details.

Have a look at https://stackoverflow.com/a/68131633/489865, and translate to C++. As the guy there says:

There is no property for the font size, though, so there are two possibilities:

create a custom property (by using the pyqtProperty decorator in PyQt);

use a QVariantAnimation, which is not bound to any property;

Pick whichever way you prefer.