gtk:style-context-set-background (context window)

context -- a gtk:style-context object
window -- a gdk:window object

Sets the background of the GDK window to the background pattern or color specified in the style context for its current state. The gtk:style-context-set-background function has been deprecated since version 3.18 and should not be used in newly written code. Use the gtk:render-background function instead. Note that clients still using this function are now responsible for calling this function again whenever the style context is invalidated.