#include "../../lv_examples.h" #if LV_BUILD_EXAMPLES static void drag_event_handler(lv_event_t * e) { lv_obj_t * obj = lv_event_get_target(e); lv_indev_t * indev = lv_indev_get_act(); if(indev == NULL) return; lv_point_t vect; lv_indev_get_vect(indev, &vect); lv_coord_t x = lv_obj_get_x(obj) + vect.x; lv_coord_t y = lv_obj_get_y(obj) + vect.y; lv_obj_set_pos(obj, x, y); } /** * Make an object dragable. */ void lv_example_obj_2(void) { lv_obj_t * obj; obj = lv_obj_create(lv_scr_act()); lv_obj_set_size(obj, 150, 100); lv_obj_add_event_cb(obj, drag_event_handler, LV_EVENT_PRESSING, NULL); lv_obj_t * label = lv_label_create(obj); lv_label_set_text(label, "Drag me"); lv_obj_center(label); } #endif