No, what sn4k3 has basically written is
Code:
#define LIB_SIGSCAN_CLASS CSigScanLib
// (.h file)
class LIB_SIGSCAN_CLASS
{
bool Load(KeyValues *kvSigscan);
// ...
};
// (.cpp file)
bool LIB_SIGSCAN_CLASS::Load(KeyValues *kvSigscan) {
// function body
}
So he declares class CSigScanLib, where he declares the Load function.
Then in the .cpp file he provides the function definition of CSigScanLib::Load.
This is valid C++ code and will compile&link properly.
I don't see a reason to use the preprocessor macro there but it also doesn't do any harm.