QLabel *label = new QLabel("Hello World"); label->setWhatsThis("This is a basic QLabel example");
QLabel *imageLabel = new QLabel; QPixmap pixmap("image.png"); imageLabel->setPixmap(pixmap); imageLabel->setWhatsThis("This is an image QLabel example");This code creates a label with an image loaded from the file "image.png" and sets the "What's This?" help text to "This is an image QLabel example". Both examples use the Qt package library.