gtk:entry-completion-popup-set-width (object)

object -- a gtk:entry-completion object
setting -- true to make the width of the popup the same as the entry

Accessor of the popup-set-width slot of the gtk:entry-completion class. The gtk:entry-completion-popup-set-width function returns whether the completion popup window will be resized to the width of the entry. The (setf gtk:entry-completion-popup-set-width) function sets whether the completion popup window will be resized to be the same width as the entry.