Is there any way to use lv_pct in lv_img_set_zoom?
No, because the current method also works like percentage.
- 256 = 100%
- 512 = 200%
- etc
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How to change image size automatically? For example: I have an object with 300x200 and an image (inside the object) 400x300, but I want this image to automatically resize to the width and height of the parent object, without any manual procedure, as I will have to adjust the size of the image each time that the size of the object is changed. Can I do this with events? For example: Each time the object size is changed, adjust the image size.
@Miguel_0101 @kisvegabor did you figure this out? I am also running into a similar question. ie if I want an image of any size to resize nicely to fit 300x200 is there a way to have it resize automatically or do I need to get the size of the image, figure out the % to scale to the target size and adjust zoom?
It’s not implemented yet. 
Yes, you can do it like this for now.