is it possible to access a static property of a COM object without creating an instance of the object?

my situation is this: i have an unmanaged application (written in delphi). this application exposes a COM-based plugininterface. until now i only wrote managed plugins in c#. plugins provide their info (name, author, ..) via a static property that returns an instance of PluginInfo (which implements IPluginInfo). this static property i can access on the managed plugins using http://managedvcl.com.

now i want to write unmanaged plugins on the same interface. i can load them using:

plug := CreateComObject(TGuid) as IMyPlugInterface;

and they run, but i don't know how to read out their PluginInfo.

so the question again is: is there another way than implementing IPluginInfo in the plugin-class and only accessing the info after i have created an instance of the plugin?