I want to add a header in the backstage in order to look more blend in like the frontend. Nothing much I want to add, just the header and footer is enough. The content section remains the original style.
But I can't find an appropriate hook to this area. I tried to add get_header(); into admin-header.php and it works. However, I don't want to mess up with wp core files, so is there any way to add the files?
After months of resarching, I finally gave up this thought that adding frontend header and footer to the backend. Instead, I just use the frontend pages to become the user dashboard. Although, this involved a lot of work (I do it manually, not by a plugin), but it is more flexible.
However, still thanks for the advices/suggestion.