Re: [Dev-C++] Passing function address as a parameter.

[Odilon J. B. <odi...@ya...>]

Thanks, Andy!

It really worked fine.



Odilon J. Bedin

  ----- Original Message -----=20
  From: an...@al...=20
  To: Odilon J. Bedin=20
  Sent: Friday, February 20, 2004 5:47 AM
  Subject: RE: [Dev-C++] Passing function address as a parameter.


  Hi,

  Maybe try this:

  #include <stdio.h>

  //Type defintition of pointer to keep the code cleaner - I think this =
was your problem not defining the pointer correctly.
  typedef void (*pMyFunc)(void);

  void MyFunc(void);
  void TestMyFunc(pMyFunc pmf);

  int main(int argc, char *argv[])
  {
   =20
    //Pass Function address to Test Function
      TestMyFunc(MyFunc);=20
   =20
      return 0;
  }

  void MyFunc()
  {
      printf ("Hello!");
  }
  void TestMyFunc(pMyFunc pmf)
  {
      pmf();
  }


  Hope that helps.
  Andy
    -----Original Message-----
    From: dev...@li... =
[mailto:dev...@li...]On Behalf Of Odilon J. =
Bedin
    Sent: 20 February 2004 03:01
    To: dev...@li...
    Subject: [Dev-C++] Passing function address as a parameter.


    Hi !

    I'm using DevCpp in games development and I'm having a problem about =
passing function address as a parameter.

    Example:

    void show_message() {
        printf("Message\n");
    }

    void call_function(void *func) {
        // I receive the pointer to de function, but I can't execute it, =
like this:
        func();
    }

    int main() {
        call_function((void*)show_message);
        getch();
    }


    In order to execute the function passed as parameter, I have this =
option:

    void show_message() {
        printf("Message\n");
    }

    void call_function(void func()) {
        // This works fine, but I can't store the address of func() to =
execute it later.
        func();
    }

    int main() {
        call_function(show_message);
        getch();
    }

    I've tried some typecasts, but the compiler doesn't accept.
    Does anyone here have a suggestion?

    Thanks!

    Odilon J. Bedin