// 历史报警信息
public void GetHisAlarmInfo()
{
Int32 index = 0;
Int32 ret = HncApi.HNC_AlarmGetHistoryData(index, ref count, historyData, HNCCollector.ActiveClientNo);
if (ret != 0)
{
MessageBox.Show("failing to get the history alarmNum!");
}
// 注意报警信息有很多，这种表达方式需要验证。 historyData[i]
}
public Int32 HNC_AlarmGetHistoryData(Int32 index, ref Int32 count, AlarmHisData[] data)
{
Int32 MAX_ALARM_HISDATA_LEN = HncApi.ALARM_HISTORY_MAX_NUM * Marshal.SizeOf(typeof(AlarmHisData));
IntPtr ptr = Marshal.AllocHGlobal(MAX_ALARM_HISDATA_LEN);
Int32 ret = HncApi.HNC_AlarmGetHistoryData(index, ref count, ptr, _ClientNo);
if (ret == 0)
{
for (Int32 i = 0; i < count; i++)
{
data[i] = (AlarmHisData)Marshal.PtrToStructure((IntPtr)(ptr.ToInt32() + i * Marshal.SizeOf(typeof(AlarmHisData))), typeof(AlarmHisData));
}
}
Marshal.FreeHGlobal(ptr);
return(ret);
}