Template classes and abstraction of type

[Raistlin]

I have a template class with a lot methods for 3D operations, to be able to perform the operations on different types T(for the moment only unsigned char and unsigned short). I would like to set the type of the 3D array of a certain type T, be able to perform a lot of operations on this data regardless of the type and retrieve the type when I need type-related data from it (for example a slice of the volume).

Currently I create a class with pointers to instantiations of the classes with all possible data types, a selector to determine the current type, and I add a method for each underlying method of the template class, which calls the right version. This seems quite cumbersome, and needs a change of the wrapper implementation each time the template class is changed.

Is there a way to do something like the following :

template<class T>
class A
{
public:
		void doSomething();
		void doSomethingToo();
private:
		T** data;
		//...
};
 
class AWrapper
{
public:
		//Do not explicitly add methods
		T* operator->();//Return right pointer based on typeSelector_;
private:
		int typeSelector_;
		A<char>* charData_;
		A<short>* shortData_;		
};

template<class T>
class A
{
public:
		void doSomething();
		void doSomethingToo();
private:
		T** data;
		//...
};

class AWrapper
{
public:
		//Do not explicitly add methods
		T* operator->();//Return right pointer based on typeSelector_;
private:
		int typeSelector_;
		A<char>* charData_;
		A<short>* shortData_;		
};

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Off course this does not work since T is still undefined in the wrapper. Any way to accomplish this?