错误:request for member 'setupUi' in '((qwt*)this)->qwt::ui', which is of non-clas
代码;
qwt::qwt(QWidget *parent, Qt::WFlags flags)
: QMainWindow(parent, flags)
{
ui.setupUi(this);
// QVBoxLayout* vLayout = new QVBoxLayout(this);
//
m_plot = new QwtPlot(QwtText("实时曲线图"),this);