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This thread might be of interest to you:
http://www.coniserver.net/ubbthreads/sho...true#Post809004

excessus:

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Since Lite-C is a little weird about function pointers (they're not actually types, I think), you can't have a function pointer type in your struct. But you can have a void* in which you can store (but not call) a function pointer (manual suggests you do this for function pointer arrays, so it's not THAT unsafe). You can then assign the void* to a function pointer (Lite-C casts automatically), and call the function from the function pointer.

This basicly gives you member functions, but the syntax is quite ugly. Maybe you can fix that with a macro. CALL_MEMBER or something..

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He provides an example as well.

Greetz

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#include <acknex.h>
#include <default.c>

#define new(TYPE) malloc(sizeof(TYPE))
#define delete(OBJECT) free(OBJECT)

typedef struct
{
   int id;
   var coolness;
   STRING* name;
   function lolz();
} ITEM;

ITEM* obj1;

function init_item(ITEM* item, var coolness, STRING* name)
{
	static int count = -1;
	item.id = ++count;
	item.coolness = coolness;
	item.name = name;
}

TEXT* pnl =
{	
	pos_x = 10;
	pos_y = 10;
	flags = VISIBLE;
}

function test()
{
	(pnl.pstring)[0] = "performed";
}

function perform()
{
	obj1.lolz();
}

function main()
{
	screen_color.blue = 155;

	obj1 = new(ITEM);
	init_item(obj1, 2, "Hej");
	obj1.lolz = test;
	
	on_a = perform;
}