34 lines
996 B
C
34 lines
996 B
C
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#include "../../lv_examples.h"
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#if LV_USE_SLIDER && LV_BUILD_EXAMPLES
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static void slider_event_cb(lv_event_t * e);
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static lv_obj_t * slider_label;
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/**
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* A default slider with a label displaying the current value
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*/
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void lv_example_slider_1(void)
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{
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/*Create a slider in the center of the display*/
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lv_obj_t * slider = lv_slider_create(lv_scr_act());
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lv_obj_center(slider);
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lv_obj_add_event_cb(slider, slider_event_cb, LV_EVENT_VALUE_CHANGED, NULL);
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/*Create a label below the slider*/
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slider_label = lv_label_create(lv_scr_act());
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lv_label_set_text(slider_label, "0%");
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lv_obj_align_to(slider_label, slider, LV_ALIGN_OUT_BOTTOM_MID, 0, 10);
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}
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static void slider_event_cb(lv_event_t * e)
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{
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lv_obj_t * slider = lv_event_get_target(e);
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char buf[8];
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lv_snprintf(buf, sizeof(buf), "%d%%", (int)lv_slider_get_value(slider));
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lv_label_set_text(slider_label, buf);
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lv_obj_align_to(slider_label, slider, LV_ALIGN_OUT_BOTTOM_MID, 0, 10);
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}
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#endif
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