Call a function with a function pointer

[Namespace]

On Thursday, 10 October 2013 at 14:26:37 UTC, Benjamin Thaut 
wrote:
> Am 10.10.2013 16:13, schrieb Namespace:
>> I have this function:
>> ----
>> void foo(T)(void function(T*) test) { }
>> ----
>>
>> And want to call it with a C function:
>> ----
>> foo!(SDL_Surface)(SDL_FreeSurface);
>> ----
>>
>> but I get:
>> Fehler    1    Error: foo (void function(SDL_Surface*) test) 
>> is not
>> callable using argument types (extern (C) void 
>> function(SDL_Surface*)
>> nothrow)
>>
>> What would be the smartest solution?
>
> If you can change the signature of foo just add a extern(c) to 
> the function pointer declaration.
>
> Otherwise just wrap the SDL_FreeSurface call into a delegate on 
> the caller side.

You mean like this?
----
void foo(T)(extern(C) void function(T*) func) {
		
}
----

That prints: Error: basic type expected, not extern