close application window

[seltra]

myproject::myproject(QWidget *parent, Qt::WFlags flags): QMainWindow(parent, flags)
{
ui.setupUi(this);
start();
 
}

myproject::myproject(QWidget *parent, Qt::WFlags flags): QMainWindow(parent, flags)
{
ui.setupUi(this);
start();

}

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how can i close widget window from the method??

void myproject::start()
 
{
 
ui.centralwidget.close()
}

void myproject::start()

{

ui.centralwidget.close()
}

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