[Qt-interest] Regarding DLLs and plugins, QPluginLoader and QLibrary class

[Patric]

Hi all, 
I have two simple questions here. 
I'm reading the documentation of QPluginLoader http://doc.trolltech.com/4.5/qpluginloader.html#details, and I was wondering what does this means : 

QPluginLoader provides direct access to a root component object (instance()), instead of forcing you to resolve a C function manually.

And another question, while I was looking at QLibrary documentation http://doc.trolltech.com/4.5/qlibrary.html#load, more specifically http://doc.trolltech.com/4.5/qlibrary.html#resolve, 
what do they mean by saying "symbol" ? 

and resolve() to resolve a symbol in the library 


I don't have experience with shared objects and maybe thats the reason I can't get it. I searched the net for a definition but I couldn't found a clear one. 

Regards,
Patric


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