#include#include int main(int argc, char *argv[]) { QApplication app(argc, argv); QLabel label("Hello, World!"); label.show(); return app.exec(); }
#include#include #include int main(int argc, char *argv[]) { QApplication app(argc, argv); QLabel label; QPixmap pixmap("image.png"); label.setPixmap(pixmap); label.show(); return app.exec(); }
#includeThis code creates a QLabel with the text "Hello, World!" and displays it on the screen using the show() function. The text is then changed to "Goodbye, World!" using the setText() function. Package Library: Qt Widgets#include int main(int argc, char *argv[]) { QApplication app(argc, argv); QLabel label("Hello, World!"); label.show(); // Change the text label.setText("Goodbye, World!"); return app.exec(); }