Heres a video by me that shows that HOW TO SET A BACKGROUND IMAGE IN A FOLDER(all windows)
PLEASE SUBSCRIBE!!!!!!!!!!!!!
code for this is here---
[ExtShellFolderViews]
{BE098140-A513-11D0-A3A4-00C04FD706EC}={BE098140-A513-11D0-A3A4-00C04FD706EC}
[{BE098140-A513-11D0-A3A4-00C04FD706EC}]
IconArea_Image=D:\Harsh\bg change\harsh.jpg
iconarea_text= black
[.ShellClassInfo]