1 #include "../../lv_examples.h"
2 #if LV_USE_DROPDOWN && LV_BUILD_EXAMPLES
3
event_cb(lv_event_t * e)4 static void event_cb(lv_event_t * e)
5 {
6 lv_obj_t * dropdown = lv_event_get_target(e);
7 char buf[64];
8 lv_dropdown_get_selected_str(dropdown, buf, sizeof(buf));
9 LV_LOG_USER("'%s' is selected", buf);
10 }
11
12 /**
13 * Create a menu from a drop-down list and show some drop-down list features and styling
14 */
lv_example_dropdown_3(void)15 void lv_example_dropdown_3(void)
16 {
17 /*Create a drop down list*/
18 lv_obj_t * dropdown = lv_dropdown_create(lv_scr_act());
19 lv_obj_align(dropdown, LV_ALIGN_TOP_LEFT, 10, 10);
20 lv_dropdown_set_options(dropdown, "New project\n"
21 "New file\n"
22 "Save\n"
23 "Save as ...\n"
24 "Open project\n"
25 "Recent projects\n"
26 "Preferences\n"
27 "Exit");
28
29 /*Set a fixed text to display on the button of the drop-down list*/
30 lv_dropdown_set_text(dropdown, "Menu");
31
32 /*Use a custom image as down icon and flip it when the list is opened*/
33 LV_IMG_DECLARE(img_caret_down)
34 lv_dropdown_set_symbol(dropdown, &img_caret_down);
35 lv_obj_set_style_transform_angle(dropdown, 1800, LV_PART_INDICATOR | LV_STATE_CHECKED);
36
37 /*In a menu we don't need to show the last clicked item*/
38 lv_dropdown_set_selected_highlight(dropdown, false);
39
40 lv_obj_add_event_cb(dropdown, event_cb, LV_EVENT_VALUE_CHANGED, NULL);
41 }
42
43 #endif
44
