void CRtcSampleDlg::OnPaint()

in AliRTC2.5/Windows/MFC Demo/RtcSample/RtcSampleDlg.cpp [187:226]

• 29 lines of code
• 4 McCabe index (conditional complexity)

void CRtcSampleDlg::OnPaint()
{
	if (IsIconic())
	{
		CPaintDC dc(this); // 用于绘制的设备上下文

		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);

		// 使图标在工作区矩形中居中
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// 绘制图标
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CPaintDC dc(this);

		if (!m_Img.IsNull()) 
			m_Img.Destroy();

		CString strPicPath = ObtainFilePath() + "CONFIG\\LOGO.png";
		m_Img.Load(strPicPath.GetBuffer(0));                           //load载入，否则不显示  
		TransparentPNG(&m_Img);										 //调用透明化处理函数  

		CRect rect;
		GetClientRect(&rect);

		int iHeight = rect.Width() / 2 - m_Img.GetWidth() / 2;

		if (!m_Img.IsNull()) m_Img.Draw(dc.m_hDC, iHeight, 28);       //以左上角为原点，按原始大小，在(80,20)处贴图  

		CDialogEx::OnPaint();
	}
}