Function declare for use of function as param

[packetVB]

Ok if I declare my functions in a class as.

SetEvent(long tEvent,void *funcname);

MSVC lets me do
void SomeFunc();
void SomeotherFunc(int, int);
....
SomeClass someobject;
....
someobject.SetEvent(1,SomeFunc);
someobject.SetEvent(1,SomeotherFunc);


However Ming32 errors on both.
I have to cast it which I dont want to do.

What is the correct way to declare a function that takes a function as a parameter. Or is it possible?

packetvb

[NoteMe]

Not sure, but I think you have to make a pointer to that function, have you done that?

[packetVB]

Thats what I dont want to have to do.
I dont want to cast it and I dont want to have to create a pointer for the function.
I guess I want to declare in the function of the class to expect a pointer to a function.
Hows that done?

[SLH]

Not quite sure what you want, but i use this as a parameter for some of my functions.

void (*<Variable Name>)(<Parameter List For Function>)

You'd pass in something like &MyFunction

[sunburnt]

try something like this:

// pfMyFunction is a pointer to a void function that takes 2 int arguments
typedef void(*pfMyFunction)(int a, int b);

// this is an example of a pfMyFunction
void MyFunction(int a, int b)
{
}

void FuncAsArg(pfMyFunction func)
{
	func(1, 3);
}


int main()
{
	FuncAsArg(MyFunction);
	return;
}

[packetVB]

Thanks for the replies.

SLH,
Nope doesnt work Ming complains about the function def.

sunburnt,
Thats exacetly what I wanted to stay away from.


Oh well, I guess ill just cast it using (void*) before the function names. That way itll work on any func decl.

Kinda odd that MSVC excepts the func name only and Ming requires the cast. Just means Ill have to do a fix up for ming compilers after the conversion from basic to c++.

Thanks guys/girls.

packetvb

[sunburnt]

The code I showed does not cast to a void* -- it works on any function fitting the declaration void somefunc(int, int).