lvgl/examples/others/ime/lv_example_ime_pinyin_2.c

#include "../../lv_examples.h"
#if LV_USE_LABEL && LV_USE_TEXTAREA && LV_FONT_SIMSUN_16_CJK && LV_USE_IME_PINYIN && LV_IME_PINYIN_USE_K9_MODE && LV_BUILD_EXAMPLES

static void ta_event_cb(lv_event_t * e)
{
    lv_event_code_t code = lv_event_get_code(e);
    lv_obj_t * ta = lv_event_get_target(e);
    lv_obj_t * kb = lv_event_get_user_data(e);

    if(code == LV_EVENT_FOCUSED) {
        if(lv_indev_get_type(lv_indev_active()) != LV_INDEV_TYPE_KEYPAD) {
            lv_keyboard_set_textarea(kb, ta);
            lv_obj_remove_flag(kb, LV_OBJ_FLAG_HIDDEN);
        }
    }
    else if(code == LV_EVENT_READY) {
        lv_obj_add_flag(kb, LV_OBJ_FLAG_HIDDEN);
        lv_obj_remove_state(ta, LV_STATE_FOCUSED);
        lv_indev_reset(NULL, ta);   /*To forget the last clicked object to make it focusable again*/
    }
}

void lv_example_ime_pinyin_2(void)
{
    lv_obj_t * pinyin_ime = lv_ime_pinyin_create(lv_screen_active());
    lv_obj_set_style_text_font(pinyin_ime, &lv_font_simsun_16_cjk, 0);
    //lv_ime_pinyin_set_dict(pinyin_ime, your_dict); // Use a custom dictionary. If it is not set, the built-in dictionary will be used.

    /* ta1 */
    lv_obj_t * ta1 = lv_textarea_create(lv_screen_active());
    lv_textarea_set_one_line(ta1, true);
    lv_obj_set_style_text_font(ta1, &lv_font_simsun_16_cjk, 0);
    lv_obj_align(ta1, LV_ALIGN_TOP_LEFT, 0, 0);

    /*Create a keyboard and add it to ime_pinyin*/
    lv_obj_t * kb = lv_keyboard_create(lv_screen_active());
    lv_keyboard_set_textarea(kb, ta1);

    lv_ime_pinyin_set_keyboard(pinyin_ime, kb);
    lv_ime_pinyin_set_mode(pinyin_ime,
                           LV_IME_PINYIN_MODE_K9);  // Set to 9-key input mode. Default: 26-key input(k26) mode.
    lv_obj_add_event_cb(ta1, ta_event_cb, LV_EVENT_ALL, kb);

    /*Get the cand_panel, and adjust its size and position*/
    lv_obj_t * cand_panel = lv_ime_pinyin_get_cand_panel(pinyin_ime);
    lv_obj_set_size(cand_panel, LV_PCT(100), LV_PCT(10));
    lv_obj_align_to(cand_panel, kb, LV_ALIGN_OUT_TOP_MID, 0, 0);

    /*Try using ime_pinyin to output the Chinese below in the ta1 above*/
    lv_obj_t * cz_label = lv_label_create(lv_screen_active());
    lv_label_set_text(cz_label,
                      "嵌入式系统（Embedded System），\n是一种嵌入机械或电气系统内部、具有专一功能和实时计算性能的计算机系统。");
    lv_obj_set_style_text_font(cz_label, &lv_font_simsun_16_cjk, 0);
    lv_obj_set_width(cz_label, 310);
    lv_obj_align_to(cz_label, ta1, LV_ALIGN_OUT_BOTTOM_LEFT, 0, 0);
}

#endif