How Can I change wallpaper from CLI?

[kevinzhow <kevinchou.c@xxxxxxxxx>]

hello~

Sorry to brother,I don not know which channel should i send this mail exactly , so i send this mail to kde, kde-devel and ode-core-devel, but i really need this help,  please

i am a developer of an application which can do browse online gallery and change the desktop wallpaper。You can find it at (http://lovebizhi.com/linux)

but when i tried  to support KDE I cannot find a possible way to change the wallpaper in CLI such like ( kde-wallpaper set file://xxxxx )

Please give me some tips about this

Thank you
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