// Create a new QLabel with text QLabel label("Hello, world!"); // Adjust the size of the label to fit its contents label.adjustSize();
// Create a new QPlainTextEdit with text QPlainTextEdit textEdit("Lorem ipsum dolor sit amet, consectetur adipiscing elit."); // Adjust the size of the text edit to fit its contents textEdit.adjustSize();This method is part of the Qt library, which is a C++ toolkit for developing cross-platform applications. More specifically, it is part of the QWidget class, which is the base class for all user interface objects in Qt.