Using honeywellblack to do secondary development, the program to realize is that when the alarm system into the callback function for alarm information
Call H264_DVR_API bool H264_DVR_SetDVRMessCallBack (fMessCallBack cbAlarmcallback, unsigned long lUser);
Alarm information, why the callback function triggers only once?

CodePudding user response:

This question is too wide, this special kit was the first time I heard,
But the design concept is generally interlinked:
Setting for this type of callback functions are generally have a switch parameter (have a plenty of the callback function returns a specific value), to control it is a continuous correction or correction only once,
Have a good look at H264_DVR_SetDVRMessCallBack documents,