这个例程 我怎么添加控件呢
Window::Window()
{
FlowLayout *flowLayout = new FlowLayout;
QPushButton teerer;
teerer.setText("q1w");
flowLayout->addWidget(new QPushButton(tr("Short")));
flowLayout->addWidget(new QPushButton(tr("Longer")));
flowLayout->addWidget(new QPushButton(tr("Different text")));
flowLayout->addWidget(new QPushButton(tr("More text")));
flowLayout->addWidget(new QPushButton(tr("Even longer button text")));
flowLayout->addWidget(&teerer);//这样添加不显示内容
setLayout(flowLayout);
setWindowTitle(tr("Flow Layout"));
}