44 lines
1.5 KiB
C
44 lines
1.5 KiB
C
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#include "../../lv_examples.h"
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#if LV_USE_DROPDOWN && LV_BUILD_EXAMPLES
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static void event_cb(lv_event_t * e)
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{
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lv_obj_t * dropdown = lv_event_get_target(e);
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char buf[64];
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lv_dropdown_get_selected_str(dropdown, buf, sizeof(buf));
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LV_LOG_USER("'%s' is selected", buf);
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}
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/**
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* Create a menu from a drop-down list and show some drop-down list features and styling
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*/
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void lv_example_dropdown_3(void)
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{
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/*Create a drop down list*/
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lv_obj_t * dropdown = lv_dropdown_create(lv_scr_act());
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lv_obj_align(dropdown, LV_ALIGN_TOP_LEFT, 10, 10);
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lv_dropdown_set_options(dropdown, "New project\n"
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"New file\n"
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"Save\n"
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"Save as ...\n"
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"Open project\n"
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"Recent projects\n"
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"Preferences\n"
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"Exit");
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/*Set a fixed text to display on the button of the drop-down list*/
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lv_dropdown_set_text(dropdown, "Menu");
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/*Use a custom image as down icon and flip it when the list is opened*/
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LV_IMG_DECLARE(img_caret_down)
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lv_dropdown_set_symbol(dropdown, &img_caret_down);
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lv_obj_set_style_transform_angle(dropdown, 1800, LV_PART_INDICATOR | LV_STATE_CHECKED);
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/*In a menu we don't need to show the last clicked item*/
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lv_dropdown_set_selected_highlight(dropdown, false);
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lv_obj_add_event_cb(dropdown, event_cb, LV_EVENT_VALUE_CHANGED, NULL);
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}
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#endif
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