// Create a new QWidget QWidget* myWidget = new QWidget(); // Do something with myWidget // Delete the widget and all its child widgets later myWidget->deleteLater();
// Create a new QPushButton QPushButton* myButton = new QPushButton("Click me!"); // Add the button to a layout QVBoxLayout* myLayout = new QVBoxLayout(); myLayout->addWidget(myButton); setLayout(myLayout); // Disconnect the button from all signals myButton->disconnect(); // Delete the button and its child widgets later myButton->deleteLater();This code creates a new QPushButton called "myButton", adds it to a QVBoxLayout, disconnects it from all signals, and then schedules it for deletion with "deleteLater()". This ensures that all memory used by the button and its child widgets is properly cleaned up. The QWidget deleteLater function is part of the Qt library, a popular GUI toolkit for C++ programming.