SDL2

demo/lvgl/t_lvgl.h

@@ -5,6 +5,6 @@
 #ifndef HW_LIB_T_LVGL_H
 #define HW_LIB_T_LVGL_H
 
-void Test_lvgl();
+void Test_lvgl(void *pVoid);
 
 #endif //HW_LIB_T_LVGL_H

demo/lvgl/test.c

@@ -6,17 +6,42 @@
 #include <windows.h>
 #include "t_lvgl.h"
 
-void Test_lvgl() {
+
+static void btn_event_cb(lv_event_t *e) {
+    lv_event_code_t code = lv_event_get_code(e);
+    lv_obj_t *btn = lv_event_get_target(e);
+    if (code == LV_EVENT_CLICKED) {
+        static uint8_t cnt = 0;
+        cnt++;
+
+        /*Get the first child of the button which is the label and change its text*/
+        lv_obj_t *label = lv_obj_get_child(btn, 0);
+        lv_label_set_text_fmt(label, "Button: %d", cnt);
+    }
+}
+
+/**
+ * Create a button with a label and react on click event.
+ */
+void lv_example_get_started_1(void) {
+    lv_obj_t *btn = lv_btn_create(lv_scr_act());     /*Add a button the current screen*/
+    lv_obj_set_pos(btn, 10, 10);                            /*Set its position*/
+    lv_obj_set_size(btn, 120, 50);                          /*Set its size*/
+    lv_obj_add_event_cb(btn, btn_event_cb, LV_EVENT_ALL, NULL);           /*Assign a callback to the button*/
+
+    lv_obj_t *label = lv_label_create(btn);          /*Add a label to the button*/
+    lv_label_set_text(label, "Button");                     /*Set the labels text*/
+    lv_obj_center(label);
+}
+
+void Test_lvgl(void *pVoid) {
     lv_init();
     lv_port_disp_init();
     lv_port_indev_init();
 
-//    lv_obj_t * bar1 = lv_bar_create(lv_scr_act());
-//    lv_obj_set_size(bar1, 200, 20);
-//    lv_obj_center(bar1);
-//    lv_bar_set_value(bar1, 70, LV_ANIM_OFF);
+    lv_example_get_started_1();
 //     lv_demo_widgets();
-//    printf("\nTEST Widgets\n");
+    printf("\nTEST Widgets\n");
 
     while (1) {
         /* Periodically call the lv_task handler.