text: #include "demodialog.h"
  #include "ui_demodialog.h"
  
  DemoDialog::DemoDialog(QWidget *parent) :
      QDialog(parent),
      ui(new Ui::DemoDialog)
  {
      ui->setupUi(this);
  }
  
  DemoDialog::~DemoDialog()
  {
      delete ui;
  }
  