207     if(btn_id >= btnm->btn_cnt && btn_id != LV_BUTTONMATRIX_BUTTON_NONE) return;  in lv_buttonmatrix_set_selected_button()
319     if(btn_id == LV_BUTTONMATRIX_BUTTON_NONE) return NULL;  in lv_buttonmatrix_get_button_text()
370     btnm->btn_id_sel     = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_constructor()
434             btnm->btn_id_sel = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_event()
435             if(btn_pr != LV_BUTTONMATRIX_BUTTON_NONE) {  in lv_buttonmatrix_event()
443                 btnm->btn_id_sel = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_event()
447         if(btnm->btn_id_sel != LV_BUTTONMATRIX_BUTTON_NONE) {  in lv_buttonmatrix_event()
459         if(btnm->btn_id_sel != LV_BUTTONMATRIX_BUTTON_NONE) {  in lv_buttonmatrix_event()
468                     btnm->btn_id_sel = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_event()
474         if(btnm->btn_id_sel != LV_BUTTONMATRIX_BUTTON_NONE) {  in lv_buttonmatrix_event()
502         if(btnm->btn_id_sel != LV_BUTTONMATRIX_BUTTON_NONE) {  in lv_buttonmatrix_event()
514         btnm->btn_id_sel = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_event()
530         if(btnm->btn_id_sel == LV_BUTTONMATRIX_BUTTON_NONE) {  in lv_buttonmatrix_event()
552                 btnm->btn_id_sel = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_event()
567             if(btnm->btn_id_sel == LV_BUTTONMATRIX_BUTTON_NONE)  btnm->btn_id_sel = 0;  in lv_buttonmatrix_event()
577                     btnm->btn_id_sel = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_event()
583             if(btnm->btn_id_sel == LV_BUTTONMATRIX_BUTTON_NONE) btnm->btn_id_sel = 0;  in lv_buttonmatrix_event()
594                     btnm->btn_id_sel = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_event()
602             if(btnm->btn_id_sel == LV_BUTTONMATRIX_BUTTON_NONE) {  in lv_buttonmatrix_event()
607                         btnm->btn_id_sel = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_event()
633             if(btnm->btn_id_sel == LV_BUTTONMATRIX_BUTTON_NONE) {  in lv_buttonmatrix_event()
638                         btnm->btn_id_sel = LV_BUTTONMATRIX_BUTTON_NONE;  in lv_buttonmatrix_event()
973     if(i == btnm->btn_cnt) i = LV_BUTTONMATRIX_BUTTON_NONE;  in get_button_from_point()
980     if(btn_idx == LV_BUTTONMATRIX_BUTTON_NONE) return;  in invalidate_button_area()