public PTZExtend(NetDemo netDemo) { this.m_oNetDemo = netDemo; m_deviceInfoList = netDemo.getDeviceInfoList(); m_lpDevHandle = m_deviceInfoList[netDemo.getCurRealPanel().m_deviceIndex].m_lpDevHandle; m_iChannelID = netDemo.getCurRealPanel().m_channelID; m_curRealPlayPanel = netDemo.getCurRealPanel(); m_curSelectedTreeDeviceIndex = netDemo.m_CurSelectTreeNodeInfo.dwDeviceIndex; m_curSelectedTreeChannelIndex = netDemo.getChannelIndex(); InitializeComponent(); m_oPtzControl = new PTZControl(); }