if (!CHCNetSDK.NET_DVR_SetDVRConfig(m_lUserID, CHCNetSDK.NET_DVR_SET_PTZPOS, 1, ptrPtzCfg, (UInt32)nSize))
{
iLastErr = CHCNetSDK.NET_DVR_GetLastError();
str = "NET_DVR_SetDVRConfig failed, error code= " + iLastErr;
/设置POS参数失败
MessageBox.Show(str);
return;
} I used this command its always...