Hi All, As you all know, there are situations, wherein the virtual function usage can be replaced with templates. But virtual functions can never be used with templates, since all the instantiations have to be tracked to form the virtual function table. But we can ask the user to provide a typelist of classes, that would probably be used with the virtual template function. I think this would solve this issue for most of the cases. Analyzing the instances where this would be useful - a) Any virtual function, which might need different types of arguments (not related to the inheritance hierarchy) b) I have a multi-method design pattern, where in i need more than one run-time resolution through the virtual functions. But sometimes, i might know one of the actual derived classes involved, with which i can avoid one virtual function call. I am not an expert in C++, but one way of achieving this would be to manually have a hash table with all the necessary function pointers for each class in the base class hierarchy and one such set for each of the classes mentioned in the typelist. Waiting for your feedback. Thanks in advance, Gokul.