m2tklib

Other Hardware Displays
3

Thank you very much for the fast answer.
This is the example, but how can i know which menu is entry is focused? and how would i connect the DATA _UP and DATA_DOWN Events to trigger those xmenu_inc and xmenu_dec functions...

//=================================================
uint8_t value = 0;
char buf[20];

// define callback procedure, which returns a menu entry with a value
const char *xmenu_value(uint8_t idx, uint8_t msg)
{  
  if ( msg == M2_STRLIST_MSG_GET_STR ) {
    strcpy(buf, " Value: ");
    itoa((int)value, buf+strlen(buf), 10);
    return buf;
  }
  return "";
}

// define callback procedures which increment and decrement a value
const char *xmenu_inc(uint8_t idx, uint8_t msg) {
  if ( msg == M2_STRLIST_MSG_SELECT  ) {
      value++;
  }
  return "";
}

const char *xmenu_dec(uint8_t idx, uint8_t msg) {
  if ( msg == M2_STRLIST_MSG_SELECT  ) {
      value--;
  }
  return "";
}

//=================================================
// this is the overall menu structure for the X2L Menu

m2_xmenu_entry xmenu_data[] = 
{
  { "Menu 1", NULL, NULL },		/* expandable main menu entry */
  { ".", NULL, xmenu_value },		/* The label of this menu line is returned by the callback procedure */
  { ". Inc", NULL, xmenu_inc },		/* This callback increments the value */
  { ". Dec", NULL, xmenu_dec },		/* This callback decrements the value */
  { "Menu 2", NULL, NULL },
  { ". Sub 2-1", &top_el_mnu1_sel, NULL },
  { ". Sub 2-2", &top_el_mnu2_sel, NULL},
  { ". Sub 2-3", &top_el_mnu3_sel, NULL },
  { NULL, NULL, NULL },
};