Enable/disable button

General discussion
1

Hi all,
I wanna enable a button when I click another button .
How can I do?
Let me kow please
Thanks in advance
Francesco Pugliese

2

Just add disabled state in a click event handler.

3

hello, thanks for fast reply.
But i wanna handle mor object lv_obj_t * in one callback. For example:

static void press_ON_button_Cb(lv_obj_t *obj, lv_event_t event){
                 switch(event){
		case LV_EVENT_SHORT_CLICKED:

                         break;

			
		case LV_EVENT_RELEASED:
                        if(obj==btn_ON){
                             lv_obj_set_hidden(obj, true);
                               lv_obj_set_hidden(btn_OFF, false);
                           }
                   if(obj==btn_OFF){
                             lv_obj_set_hidden(obj, true);
                               lv_obj_set_hidden(btn_ON, false);

}
}

It doesn’t work.
How can I resolve?

Let me know
Thanks in advance
Francesco Pugliese

4

Another question:
Once that the object is declared. How can I recovery the object in the callback? Because the pointer to the object changes. If I call lv_obj_t *obj in a callback, it is another pointer different from button_ON.or button OFF.
How can I resolve?
Francesco Pugliese
Thanks in advance
Let me know please

5

It should work this way. Can you check with a debugger what is problem?

There should be some problem somewhere. obj is the event should be the same what a ..._create function returned.