hold the focus on 1 line

[sergedenni]

How can i hold the focus on one ligne ?
i use rotary encoder so when i press the buton i want hold the focus on the line, change the variable value and when i press the buton a second time realease the focus to select an other line ?

[VasilKalchev]

bool switching_focus = true;

void encoder_btn_pressed() {
  if (switching_focus == true) {
    switching_focus = false;
  } else {
    switching_focus = true;
  }
}

void encoder_cw() {
  if (switching_focus == true) {
    menu.switch_focus();
  } else {
    menu.call_function(1);
  }
}