/***************************************************************************
README
Author: Andreas Suter
e-mail: andreas.suter@psi.ch
$Id$
***************************************************************************/
**Overview**
The collection of files here demonstrate how to implement a plugin
mechanism for a user function, i.e. also loading classes at runtime.
For a discussion see also
http://root.cern.ch/phpBB2/viewtopic.php?p=28117#28117
The idea is that a main program has an interface such that specific
user functions can be added without recompiling the main. Therefore
class identification at runtime are needed. This is possible in root
via the dictionary mechanism and the class TClass.
**Description of the files and their purposes**
The class TUserFcnBase is "almost pure virtual" and only needed to define
an interface of a user function. This is needed to efficiently call
the function at runtime.
The class TUserFcn ist the implementation of the user function.
userFcnTest is the main demonstrating how to invoke all the necessary
objects, how to cast them, and how to execute the wanted user function.
* Makefiles:
userFcnTest.cpp, main to demonstrate how to use a user function
TUserFcnBase.h interface definition for the user function including
TUserFcnBaseLinkDef.h a dictionary
TUserFcnBase.cpp
TUserFcn.h implementaion class of the user function including
TUserFcnLinkDef.h a dictionary
TUserFcn.cpp
Makefile, will generate userFcnTest
Makefile.TUserFcnBase, will generate the shared library libUserFcnBase
needed for runtime loading of the user function
Makefile.TUserFcn, will generate the shared library libUserFcn
needed for runtime loading of the user function
