Calling class function from stdcall ?

I am quite new to c++ so please bear with me.

I have an Adlink Angelo RTV24 video capture card, and to grab the images I need to use their c++ library.

This function is an event callback from the card

Code:

---

AngeloRTV_Set_Callback(1, MediaStreamProc);

---

The event callback function looks like this

Code:

---

void __stdcall MediaStreamProc(){
 // remove for space
}

---

I am using their functions within my own class 'angeloWrapper'

However, the MediaStreamProc function can't access any data/functions from my wrapper, as this is part of stdcall and not angeloWrapper.

So, how can I call a function from my wrapper from within the stdcall event function? I've tried calling...

Code:

---

test(); // identifier not found
angeloWrapper::test(); // illegal call of non-static member function

---

Any ideas? Many thanks

You can't use C++ functions directly as call-back functions. If the callback allows an arbitrary pointer type argument, then you can use that and cast it from & to the class pointer as needed.

It actually isn't really to do with __stdcall, although a class-method uses the calling convention called "thiscall" because there is a hidden argument "this", representing the object itself.

--
Mats

I'm not quite sure what or how you're doing this. Care to elaborate a little?
Are you trying to call a class method (directly) from within the wrapper???