Hi Ash,

>
> The big question is does your PIC compiler actually support function
> pointers :)

At least by manual  :). It seems to be, if I define the pointed function
before the struct the compiler will work. But if I make a declaration
before and define after the struct, this gives me a linker error. I dont
know, its error or feature :). The resolution is next:

//menu definitions

#define fomenu  "temperature"

typedef void voidfunc(char);
typedef voidfunc *      fad;

static bank1 char current_menu;

//pre definitions of functions

voidfunc menu_draw;
voidfunc
menu_handler;

voidfunc
menu_real;


void menu(char index)
{
        menu_real(index);
};

typedef struct {
                  const char line[20]   ;
                  const char key        ;
                  fad   function        ;
                  const char param      ;
                }menuitem;

typedef struct {
                  const char            itemno  ;
                  const menuitem *      item    ;
                }menutype;


const menuitem main_menu[] =
                {//name                 key function param
                "temperature"           ,'1' ,menu,     1,
                "relative humidity"     ,'2' ,menu,     2,
                "light strength"        ,'3' ,menu,     3,
                "device setting"        ,'4' ,menu,     4
                };


#define N0 sizeof(main_menu)/sizeof(menuitem)

const menuitem menu1[] =
                {
                "calibration    "       ,'1',menu,10,
                "alarm max      "       ,'2',menu,11,
                "alarm min      "       ,'3',menu,12,
                "pwm adjust     "       ,'4',menu,13
                };
#define N1 sizeof(menu1)/sizeof(menuitem)

const menuitem menu2[] =
                {
                "calibration    "       ,'1',menu,21,
                "alarm max      "       ,'2',menu,22,
                "alarm min      "       ,'3',menu,23,
                "spray control  "       ,'4',menu,24,
                "pwm adjust     "       ,'5',menu,25
                };
#define N2 sizeof(menu2)/sizeof(menuitem)

const menuitem menu3[] =
                {
                "calibration     "      ,'1',menu,31,
                "alarm max       "      ,'2',menu,32,
                "alarm min       "      ,'3',menu,33,
                "open/close pulse"      ,'4',menu,34,
                "close time      "      ,'5',menu,35,
                "optimum light level"   ,'6',menu,36,
                "time definitions"      ,'7',menu,37
                };
#define N3 sizeof(menu3)/sizeof(menuitem)

const menuitem menu4[] =
                {
                "operation mode "       ,'1',menu,41,
                "network setup  "       ,'2',menu,42,
                "date           "       ,'3',menu,43,
                "connetcted devices"    ,'3',menu,44,
                "i/o definitions"       ,'4',menu,45
                };
#define N4 sizeof(menu4)/sizeof(menuitem)


const menutype menus[]=
                {
                N0,main_menu,
                N1,menu1,
                N2,menu2,
                N3,menu3,
                N4,menu4
                };


void menu_real(char index)
{
        menu_draw(index);
};

void
 menu_draw(char index)
{
        lcd_clear();
        lcd_write(main_menu[index].line);

}

void
 menu_handler(char index)
{

}

udv
Csaba

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