detecting specific object changes [SOLVED]

[Helper]

On 18/05/2015 at 12:39, xxxxxxxx wrote:

User Information:
Cinema 4D Version:   15+ 
Platform:   Windows  ;   
Language(s) :     C++  ;

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I have created a unique ID system for objects, so object IDs will be consistent.
now let's consider I have 2 render calls:
call 1 got some unique IDs , for example (1, 2, 3, 4)
call 2 got other unique IDs , for example (1, 4, 10, 20)

I can add new objects (10 , 20), remove objects that doesn't exist anymore (2 , 3), but how to detect if objects (1, 4) has changed?

[Helper]

On 18/05/2015 at 13:03, xxxxxxxx wrote:

GetDirty and GetHDirty are probably what you are looking for.