Calling Functions With In Classes From Address

Are you sure that will work with calling functions within classes?
i have this function:
void GameAudio::StopAllSounds(void)
its memory address is 0x004A0656
when ever i try call it it crashes.

could you give me an example by any chance?

---------- Post added at 07:09 AM ---------- Previous post was at 05:56 AM ----------

i don't think this is possible

mov ecx, instanceofclass
push ecx //not sure if needed
mov eax, address
call eax

would an instance of the class be an address?

yes. the address of the calling instance. for example
ecx would be the address of instance.
ecx is just hidden in higher languages, it is basically a hidden first parameter.

ok i think i get it now so...
first i would have to find the class address say its 0x004A0650
and the function that resides inside is at 0x004A0656

i would do the following
mov ecx,0x004A0650
push ecx //not sure if needed
mov eax, 0x004A0656
call eax
? is this right?

---------- Post added at 08:51 AM ---------- Previous post was at 08:50 AM ----------

if so please mark as solved thanks kibbles

The first parameter of a function called within a class is always the instance of the class.

Yes there is the higher level way of doing it as void shows, but the reason it works is explained by my assembly way. And yes op, it should work

thanks everyone for answering my query +rep

But why not just use polymorphism? That seems to be what you need. Polymorphism - C++ Documentation