void pointer to type

[Hobson]

The best way would be to create template function and \ or set of overloaded functions for logging purposes:

#include <iostream>
#include <string>

template <typename T>
void WriteLog(const std::string &sMsg, T val)
{
	std::cout << sMsg << val << std::endl;
} 



int main(int argc, char* argv[])
{
	WriteLog("int:", 1);
	WriteLog("char:", '1');
	WriteLog("float:", 1.0f);
	return 0;
}

In your example condition

if(sizeof(&pVoidType) == sizeof(int))

is always true, because size of pointer is always equal to size of int.

Hob