After posting some information about calling an exported function from a previously injected dynamic link library, I decided to release my DLL injection class for C++. The class only uses low level win32 API calls.
This class is written and tested in Windows XP. You need at least Windows 2000 to use this class. In order to check if the system meets the operating system requirements you might use the GetVersion/GetVersionEx function from the win32 API.
The class is released under BSD license. In case you like it or experience problems please leave me a comment.