How to use UniCalendarPanel

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I use c++ builder,I want to know something.

1:EventId is automtic produced by the system?

2:How to delete an event.

I use UniCalendarPanel1->Events->Delete(int a)  to delete an event,what does a mean? I have use the eventId to delete a event,but the event deleted is not the event I selected.

3:what is the use of Description?

4:what is the use of reminder?

5:what is the use of url?

 

thanks alot.