gtk:print-settings-paper-width (settings unit)

settings -- a gtk:print-settings object
unit -- a gtk:unit value with the unit for the return value
width -- a double float with the paper width

The gtk:print-settings-paper-width function gets the value of the "paper-width" setting converted to unit. The (setf gtk:print-settings-paper-width) function sets the value of "paper-width" setting.