Quick and dirty example of receiving inter-application drag-and-drop in Python with GTK 3.x

dragtargets.py

#!/usr/bin/python
"""Quit and dirty port of the old PyGTK dragtargets.py to PyGObject"""

import gi
gi.require_version('Gtk', '3.0')
gi.require_version('Gdk', '3.0')

from gi.repository import Gdk, Gtk


def motion_cb(wid, context, x, y, time):
    Gdk.drag_status(context, Gdk.DragAction.COPY, time)
    return True


def drop_cb(wid, context, x, y, time):
    targets = ""
    for t in context.list_targets():
        targets = targets + str(t) + "\n"
        wid.drag_get_data(context, t, time)
    print(targets)
    label.set_text(targets)

    #l.set_text('\n'.join([str(t) for t in context.targets]))
    #print('\n'.join([str(t) for t in context.targets]))
    #a = wid.drag_dest_find_target(context, t)
    #context.finish(True, False, time)
    return True


def drag_received_cb(widget, drag_context, x, y, selection_data, info, time):
    print("Target: {}".format(selection_data.get_target()))
    print("Data:   {}".format(selection_data.get_data()))


w = Gtk.Window()
w.set_size_request(200, 150)
w.drag_dest_set(0, [], 0)
w.connect('drag_motion', motion_cb)
w.connect('drag_drop', drop_cb)
w.connect('drag_data_received', drag_received_cb)
w.connect('destroy', lambda w: Gtk.main_quit())
label = Gtk.Label()
w.add(label)
w.show_all()

Gtk.main()