
from gi.repository import Gtk, Gdk

widget = Gtk.Button()
widget.drag_source_set(Gdk.ModifierType.BUTTON1_MASK, None, Gdk.DragAction.MOVE)
widget.drag_source_add_image_targets()
widget.drag_source_set_icon_name("")
#widget.drag_source_set_icon_stock()
widget.drag_source_unset()
