Material Rendering

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On 11/09/2003 at 13:28, xxxxxxxx wrote:

User Information:
Cinema 4D Version:   8.207 
Platform:   Windows  ;   
Language(s) :     C++  ;

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I need to extract the rendered image, but my plugin (VP) also does this when materials are rendered (in the materialmanager recalculated).
Is there a way to find out if the rendering is the external renderer in the picture viewer or in the material manager? (internal rendering is clear)
Thanks
Samir