Beginner Question: How can I change background image in demo ? about lv_port_pc_eclipse

[embeddedt]

Here's where the image is set:

https://github.com/littlevgl/lv_examples/blob/088c9db7680764c9a8c9fdd40d0854968c64bd73/lv_apps/demo/demo.c#L65

And here is where it is declared:

https://github.com/littlevgl/lv_examples/blob/088c9db7680764c9a8c9fdd40d0854968c64bd73/lv_apps/demo/demo.c#L46

Basically, you'll want to create a new image using the image converter and then include the generated C file in your project. The image converter has a full explanation of the steps.

[KaungZawHtet]

I did 2 steps :
1.convert image to c array with the name, "background" and it generate background.c
2.add this into proj and change at 2 places
lv_img_set_src(wp, &background);
LV_IMG_DECLARE(background);
But err found and this is error:

Linking C executable pc_simulator
Undefined symbols for architecture x86_64:
"_background", referenced from:
_demo_create in demo.c.o
(maybe you meant: _lv_rletter_set_background)
ld: symbol(s) not found for architecture x86_64

[embeddedt]

@KaungZawHtet 2 things:

1. Are you sure you added the C file to the CMake file?
2. Maybe it is called img_background instead of background. You can check the bottom of the generated C file (where an lv_img_dsc_t variable is declared) to see the exact name to use.

[KaungZawHtet]

yes, forget to add the line into CMake file. Thx, sir