void QSettings::clear()
#includeThis code example uses the Qt Core library (QtCore package) to work with QSettings. In summary, the clear() function in QSettings is used to remove all keys and values from the QSettings object. It can be useful when you want to reset or clear the settings of your application. The code example provided shows how to use QSettings to store and retrieve an integer value, and then clear the settings, using the Qt Core library.#include int main() { // Create a QSettings object in the "MyApp" organization and "MyApp" application QSettings settings("MyApp", "MyApp"); // Write an integer value to the "my_key" key settings.setValue("my_key", 42); // Read the integer value back from the "my_key" key int value = settings.value("my_key").toInt(); qDebug() << "Value:" << value; // Clear the settings settings.clear(); // Check if the "my_key" key exists bool exists = settings.contains("my_key"); qDebug() << "Key exists:" << exists; return 0; }