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C:/temp/src/j2k/QNX4/MsgTest.cpp

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#include <j2k/Fred/QNX/MsgData.hpp>

void sub( void* m ) {
  serial_t i = *((serial_t*)m);

  printf("[%u]\n", i );

  if ( i & _IS_MSG_DATA ) {
    MsgData* msg = (MsgData*)m;
    printf("I'm a MsgData* kind of message !!!\n ");

    if ( msg->task == MSG_FUNCTION_CALL ) {
      printf("\nI wanna execute the function[%u] ", msg->index );
      printf("from the array of pointer to function\n\n\n");
    } else {
      printf("\nThere is no Task !?\n\n");
    }
  } else {
    printf("I have no clue what I am ! [%u]\n\n", i );
  }
}

int main() {
  MsgData* m = new MsgData();
  m->index = 2;
  m->task  = MSG_FUNCTION_CALL;
  sub( (void*)m );

  unsigned long i = MSG_DATA_SERIAL;

  // This will be interpreted as MsgData* 
  sub( &i );  // This will phreak out !

  i = 24;

  sub( &i );  // This won't be interpreted as MsgData*

  return 0;
}

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