How to make wrapper of EDSDK API To handle Canon Camera

I want to implement all the functionality of Canon EOS 6D camera into desktop application using EDSDK.

 

I tried to make wrapper of EDSDK but getting many failures.

 

Is there any proper way to understand this SDK properly, how EDSDK works, how can i implement that functionality in my way, how to manage its events and how to identity which error is occuring?

 

Please help if anyone is here who is familear with making wrapper of com libraries....

 

Thanks In Advance