How to know image display success? an event or function return I can't find such things

How-to
#1

How to know image display success? an event or function return I can’t find such things.

Hello, everybody, I do not find a return from image api, when it tells current display successed. Do I miss something? please commit!

Description

For example, an API or task need to know another thread display result. How to handle it?
Do lvgl have an event manager?

What MCU/Processor/Board and compiler are you using?

esp32

What do you want to achieve?

make an event or massage across threads.

#2

This is something you need to handle yourself, as it’s specific to the OS you use, and not LittlevGL.

Probably using a message queue or some similar construct would work best.

#3

Sorry,I don’t quite understand. take void lv_img_set_src(lv_obj_t * img, const void * src_img) for example, this image API do not return any result(ok or fail). I know OS can handle toe message but first I need to know that API run success or failed.

#4

lv_img_set_src can only fail if you are trying to load an image from a file. In the other cases (pointer to image structure or a symbol) it shouldn’t be able to fail.