gtk:entry-set-icon-from-gicon (entry pos icon)

entry -- a gtk:entry widget
pos -- a gtk:entry-icon-position value
icon -- a g:icon object with the icon to set, or nil

Sets the icon shown in the entry at the specified position from the current icon theme. If the icon is not known, a "broken image" icon will be displayed instead. If the icon argument is nil, no icon will be shown in the specified position.