C++ ProgressBar::setMarquee方法代码示例

  MainFrame()
    : Dialog(L"ProgressBars")
    , m_progressBar1(this)
    , m_progressBar2(this, ProgressBar::Styles::Default +
			   ProgressBar::Styles::Smooth)
    , m_progressBar3(this, ProgressBar::Styles::Default +
			   ProgressBar::Styles::Marquee)
    , m_start(L"Start", this)
    , m_close(L"Close", this)
  {
    // a box layout manager with vertical orientation and no-homogeneous
    setLayout(new BoxLayout(Orientation::Vertical, false));

    // set the ranges of the progress bars
    m_progressBar1.setRange(0, 100);
    m_progressBar2.setRange(0, 100);
    m_progressBar3.setMarquee(0);

    // the "Start" button is the default one
    m_start.setDefault(true);

    // call "onStart" when the "Start" button is pressed
    m_start.Click.connect(Bind(&MainFrame::onStart, this));

    // the Dialog::onCancel generates an onClose event
    m_close.Click.connect(Bind(&MainFrame::onCancel, this));

    // the application is waiting to work (the user should press the
    // "Start" button)
    m_state = WaitingToWork;

    // set the size of the Frame
    setSize(Size(256, getPreferredSize().h));
    center();
  }

  // when the "Start/Pause/Continue/Restart" button is pressed...
  void onStart()
  {
    switch (m_state) {

      // The user pressed Start/Continue...
      case WaitingToWork:
      case Paused: {
	m_state = Working;
	m_start.setText(L"Pause"); // convert the button to "Pause"...
	m_progressBar3.setMarquee(100);

	// this is "The Loop", where the real work is done
	do {
	  // when we pump the message queue, we can get events like onClose()
	  CurrentThread::pumpMessageQueue();

	  // work done
	  if (m_progressBar1.getValue() == m_progressBar1.getMaximum()) {
	    m_state = WorkDone;
	    m_start.setText(L"Restart"); // convert the button to "Restart"
	  }
	  else {
	    m_progressBar1.addValue(1);
	    m_progressBar2.addValue(1);

	    // in our case, the "real work" is sleep :) ...but for
	    // your application this could be "loading a file"...
	    Sleep(100);
	  }

	  // still working?
	} while (m_state == Working);

	// aborting work? hide the frame...
	if (m_state == Aborting)
	  setVisible(false);

	m_progressBar3.setMarquee(0);
	break;
      }

      // The user pressed Pause...
      case Working:
	m_state = Paused;
	m_start.setText(L"Continue"); // convert the button to "Continue"
	break;

      // The user pressed Restart...
      case WorkDone:
	// restart progress bars
	m_progressBar1.setValue(m_progressBar1.getMinimum());
	m_progressBar2.setValue(m_progressBar2.getMinimum());
	m_progressBar3.setMarquee(0);
	m_start.setText(L"Start"); // convert the button to "Start"
	m_state = WaitingToWork;
	break;

      case Aborting:
	assert(false);		// impossible
	break;
    }
  }