C++ Function

[gustavobm]

Can someone explain this function?

DWORD CallClassFunction(DWORD function,void* this_pointer,DWORD count,...)
{
	DWORD result;

    _asm
	{
	    mov eax,count
        LOOP_START:
		test eax,eax
		je LOOP_END
		mov edx,dword ptr ds:[count+eax*4]
		push edx
		sub eax,1
		jmp LOOP_START
        LOOP_END:
		xor eax,eax
		mov ecx,this_pointer
		call [function]
		mov result,eax
	}

	return result;
}

void gItemSystemFor380_ApplyFor380Option(LPOBJ lpObj)
{
	CallClassFunction(0x00404BD8,(void*)0x0C546658,1,lpObj);
}

Used to call CItemSystemFor380::ApplyFor380Option.

What I can't understand are these values:

DWORD function: Function offset, .pdb file (OK);
void* this_pointer: ????
DWORD count: ????

[MentaL]