Use Efl.Part for window to manipulate the background.
Two part names are used in EDC:
- elm.rect.background
- elm.swallow.background
For apps the part name is only "background".
To set a solid color background (alpha is ok):
efl_gfx_color_set(efl_part(win, "background"), r, g, b, a);
To set an image:
efl_file_set(efl_part(win, "background"), "image.jpg", NULL);
To set an object:
efl_content_set(efl_part(win, "background"), subobj);
The solid bg is invisible by default, will become visible and use
COPY render mode if a color is set. Standard window uses the
swallow part.
@feature
Jean-Philippe Andre