Hi，大家好，欢迎来到STM32之littlevGL课堂，我们在上节课中学习了选项卡控件(lv_tabview)，本节课带大家学习窗口控件，废话不多说！ 一 有图有真相
二 代码分析 void win_test(void)
{
/*Create a window*/
lv_obj_t * win = lv_win_create(lv_scr_act(), NULL);
lv_win_set_title(win, "Window title"); /*Set the title*/
/*Add control button to the header*/
lv_obj_t * close_btn = lv_win_add_btn(win, LV_SYMBOL_CLOSE); /*Add close button and use built-in close action*/
lv_obj_set_event_cb(close_btn, lv_win_close_event_cb);
lv_win_add_btn(win, LV_SYMBOL_SETTINGS); /*Add a setup button*/
/*Add some dummy content*/
lv_obj_t * txt = lv_label_create(win, NULL);
lv_label_set_text(txt, "This is the content of the window\n\n"
"You can add control buttons to\n"
"the window header\n\n"
"The content area becomes automatically\n"
"scrollable is it's large enough.\n\n"
" You can scroll the content\n"
"See the scroll bar on the right!");
}我们创建了一个窗口对象，然后通过以下API设置窗口标题为 Window title: lv_win_set_title(win, "Window title"); lv_obj_t * close_btn = lv_win_add_btn(win, LV_SYMBOL_CLOSE); /*Add close button and use built-in close action*/
lv_obj_set_event_cb(close_btn, lv_win_close_event_cb);
lv_win_add_btn(win, LV_SYMBOL_SETTINGS); void lv_win_close_event_cb(lv_obj_t * btn, lv_event_t event)
{
if(event == LV_EVENT_RELEASED) {
lv_obj_t * win = lv_win_get_from_btn(btn);
lv_obj_del(win);
}
}最后就是在串口对象内创建了一个标签，当然我们最后删除窗口对象时，这个窗口对象的子对象也是一起递归删除的。 OK，本节课就到这里，而且所有的自带控件我们都学完了，大家掌握了多少呢？ |
