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void MainWdget::mouseDoubleClickEvent(QMouseEvent *mouseEvent)
{
qDebug()<<"mouseDoubleClicked";
quitButton = new QPushButton("Quit");
quitButton->show();
connect(quitButton, SIGNAL(click()), this, SLOT(close()));
}
void MainWdget::mouseDoubleClickEvent(QMouseEvent *mouseEvent)
{
qDebug()<<"mouseDoubleClicked";
quitButton = new QPushButton("Quit", this);
quitButton->show();
connect(quitButton, SIGNAL(click()), this, SLOT(close()));
}