title: using System::Drawing namespace in managed C++ class library
body: <p>I am moving a few functions from a Managed C++ Winforms app to a class library so that I can call them in a new C# app I'm writing. However one of the functions returns a System::Drawing::Bitmap^ and uses the System::Drawing::Color class which is causing an error saying that System does not contain a namespace called Drawing ...</p>
  
  <p>Obviously it does, but I'm guessing that since a class library does not intrinsically have a graphical element to it like a winform does that there may be an extra step for accessing the functionality? </p>
  
  <p>What do i need to add/link-to?</p>
  
  <p>Thank you in advance.</p>
  
  <p>Tony.</p>