Describe the bug app_root_scr = lv_scr_act(); // get the currently active screen app_init(app_root_scr); // init app lvgl-objs ... // my env // // root@localhost:~/works/gui# uname -a // Linux localhost.localdomain 4.4.167 #1 SMP Fri ...
1. 确认lv_obj_del函数调用时的上下文环境 线程安全:LVGL默认不是线程安全的。确保lv_obj_del函数在正确的线程中被调用,并且没有与其他LVGL函数调用发生竞态条件。如果你的应用程序是多线程的,考虑使用互斥锁或其他同步机制来保护对LVGL对象的访问。 事件处理:在LVGL的事件处理函数中直接删除对象可能会导致问题,因为...
Embedded graphics library to create beautiful UIs for any MCU, MPU and display type. - lvgl/src/core/lv_obj_tree.c at d67dd943cadb3d21a3d9488b6354f669e2e58c65 · lvgl/lvgl
Will be expanded to: void <name> (lv_obj_t * obj, lv_event_t e) Examples: static LV_EVENT_CB_DECLARE(my_event1); //Protoype declaration static LV_EVENT_CB_DECLARE(my_event1) { if(e == LV_EVENT_CLICKED) { lv_obj_set_hidden(obj ,true); } } ...
For additional notes that apply to this portion of the standard, please see the notes for lvl1pPr, §21.1.2.4.13(a-g).
294 void lv_obj_del_async(struct _lv_obj_t *obj); 295 300 void lv_obj_clean(lv_obj_t * obj); 301 306 void lv_obj_invalidate(const lv_obj_t * obj); 307 308 /*=== 309 * Setter functions 310 *===*/ 311 312 /*--- 313 * Parent/children set 314 *---*/ 315...
For additional notes that apply to this portion of the standard, please see the notes for lvl1pPr, §5.1.5.4.13(a-g).
When we want to print a big object, this will help us get a clean dumping data.<?php/** * Recrusive print variables and limit by level. * * @param mixed $data The variable you want to dump. * @param int $level The level number to limit recrusive loop. * * @return string ...
允许一个或多个线程等待直到在其他线程中执行的一组操作完成的同步辅助。 ACountDownLatch用给定的计数初始化。await方法阻塞,直到由于countDown()方法的调用而导致当前计数达到零,之后所有等待线程被释放,并且任何后续的await调用立即返回。 这是一个一次性的现象 - 计数无法重置。 如果您需要重置计数的版本,请考虑使...
obj-m := cdevdemo.o else KERNELDIR ?= /lib/modules/$(shell uname -r)/build default: $(MAKE) -C $(KERNELDIR) M=$(PWD) modules endif clean: rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c .tmp_versions modules.order Module.symvers ...