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how to use callback function #99

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loong-chen opened this issue Dec 20, 2017 · 0 comments
Open

how to use callback function #99

loong-chen opened this issue Dec 20, 2017 · 0 comments

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@loong-chen
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hi,
example：

   BOOL CALLBACK MessageCallback(LONG lCommand, NET_DVR_ALARMER *pAlarmer, char *pAlarmInfo, DWORD dwBufLen, void* pUser)
{
  ...
}

SetMessageCallBack_V31(MessageCallback);

when i use c callback function, how to use node-ref change
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