Some problems with imgbtn

[sk123sos]

I have made another thread to call lv_img_btn_set_src with png files as an event interruption,but it shows nothing.However it works well with imgbtn api in main thread or img api in both main and second thread.

[sk123sos]

The nothing here means there isn't anything and I even can't find the white "no data" area.

[kisvegabor]

Have you followed the instructions here?
https://docs.lvgl.io/latest/en/html/porting/os.html