Sven Barth via fpc-pascal wrote:
Am 02.02.2018 17:53 schrieb "Dennis" <de...@avidsoft.com.hk <mailto:de...@avidsoft.com.hk>>:

    I have list of objects which contains references to other objects.
    I need to save all these objects to harddisk to be restored on a
    latter day.

    I know how to stream the data fields of these objects to a
    TFileStream but the tricky part is these how to restore the object
    references.

    The only way I can think of is to assign unique IDs to each
    objects and store these IDs to file.
    When these objects are later restored, I used these IDs find the
    actual objects and re-assign them back to the object references.

    It is tedious. Is there a smarter way?

    Also, there are some TNotifyEvent fields  e.g. OnClick, OnClose
    etc.  How do I save and restore them from file?

    Many thanks in advance.


If your objects inherit from TComponent and you use published properties you can use the streaming screen of the RTL.

I am curious how TComponent save and restore TnotifyEvent fields. Can you explain a little bit?
Also, what is 'streaming screen' of RTL? How to use it?

Thanks.

Dennis

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