Help with function Pointer

Hi, i have a question about function pointer. I am implementing a structure inside a microcontroller's program, to deal with some programed events. On my function pointer definition i am using as an argument a void pointer that receives many different structures as argument according to the function called. But some specific functions have no need arguments, and my problem is that i cant pass a void argument to a void pointer... well i dont know how... any idea on how to do that? For now i have to deal with both on different places.

FOr now i am using something like

typedef void (*arg_service_t)(void* service_param); //Service with argument
typedef void (*service_t)(void); //Service with no argument

Thank you!

Why don't you just pass NULL and test for that in your function.

Maybe this will help: If a function signature is (void), the compiler will throw an error if you call the function with a parameter. However, if a function signature is (), the compiler doesn't care what you pass -- it just ignores the parameters.

Code:

---

void somefunc(void);    // cannot be called with any parameters
void somefunc();    // parameters are ignored

---

Also, you can always include a void* in the signature but ignore it in the function:

Code:

---

void somefunc(void *ignored);

---