Tk没有任何命令来处理这个问题，Python也没有任何额外的Tk扩展来执行拖放应用程序，因此您需要一个扩展来执行这个操作。Tkdnd(位于http://sourceforge.net/projects/tkdnd的Tk扩展，而不是Tkdnd.py模块)对我有效。要从Python中使用它，需要一个包装器。快速搜索一个，似乎http://mail.python.org/pipermail/tkinter-discuss/2005-July/000476.html包含这样的代码。我又做了一个，因为我不喜欢另一个。我的包装器的问题是它高度未经测试，实际上我只使用了bindtarget函数，而且只使用了10秒左右。

使用下面的包装器，您可以创建一些小部件并声明它支持接收拖动的文件。下面是一个例子：# The next two lines are not necessary if you installed TkDnd

# in a proper place.

import os

os.environ['TKDND_LIBRARY'] = DIRECTORYTOTHETKDNDBINARY

import Tkinter

from untested_tkdnd_wrapper import TkDND

root = Tkinter.Tk()

dnd = TkDND(root)

entry = Tkinter.Entry()

entry.pack()

def handle(event):

event.widget.insert(0, event.data)

dnd.bindtarget(entry, handle, 'text/uri-list')

root.mainloop()

这里是untested_tkdnd_wrapper.py的代码：import os

import Tkinter

def _load_tkdnd(master):

tkdndlib = os.environ.get('TKDND_LIBRARY')

if tkdndlib:

master.tk.eval('global auto_path; lappend auto_path {%s}' % tkdndlib)

master.tk.eval('package require tkdnd')

master._tkdnd_loaded = True

class TkDND(object):

def __init__(self, master):

if not getattr(master, '_tkdnd_loaded', False):

_load_tkdnd(master)

self.master = master

self.tk = master.tk

# Available pre-defined values for the 'dndtype' parameter:

# text/plain

# text/plain;charset=UTF-8

# text/uri-list

def bindtarget(self, window, callback, dndtype, event='', priority=50):

cmd = self._prepare_tkdnd_func(callback)

return self.tk.call('dnd', 'bindtarget', window, dndtype, event,

cmd, priority)

def bindtarget_query(self, window, dndtype=None, event=''):

return self.tk.call('dnd', 'bindtarget', window, dndtype, event)

def cleartarget(self, window):

self.tk.call('dnd', 'cleartarget', window)

def bindsource(self, window, callback, dndtype, priority=50):

cmd = self._prepare_tkdnd_func(callback)

self.tk.call('dnd', 'bindsource', window, dndtype, cmd, priority)

def bindsource_query(self, window, dndtype=None):

return self.tk.call('dnd', 'bindsource', window, dndtype)

def clearsource(self, window):

self.tk.call('dnd', 'clearsource', window)

def drag(self, window, actions=None, descriptions=None,

cursorwin=None, callback=None):

cmd = None

if cursorwin is not None:

if callback is not None:

cmd = self._prepare_tkdnd_func(callback)

self.tk.call('dnd', 'drag', window, actions, descriptions,

cursorwin, cmd)

_subst_format = ('%A', '%a', '%b', '%D', '%d', '%m', '%T',

'%W', '%X', '%Y', '%x', '%y')

_subst_format_str = " ".join(_subst_format)

def _prepare_tkdnd_func(self, callback):

funcid = self.master.register(callback, self._dndsubstitute)

cmd = ('%s %s' % (funcid, self._subst_format_str))

return cmd

def _dndsubstitute(self, *args):

if len(args) != len(self._subst_format):

return args

def try_int(x):

x = str(x)

try:

return int(x)

except ValueError:

return x

A, a, b, D, d, m, T, W, X, Y, x, y = args

event = Tkinter.Event()

event.action = A # Current action of the drag and drop operation.

event.action_list = a # Action list supported by the drag source.

event.mouse_button = b # Mouse button pressed during the drag and drop.

event.data = D # The data that has been dropped.

event.descr = d # The list of descriptions.

event.modifier = m # The list of modifier keyboard keys pressed.

event.dndtype = T

event.widget = self.master.nametowidget(W)

event.x_root = X # Mouse pointer x coord, relative to the root win.

event.y_root = Y

event.x = x # Mouse pointer x coord, relative to the widget.

event.y = y

event.action_list = str(event.action_list).split()

for name in ('mouse_button', 'x', 'y', 'x_root', 'y_root'):

setattr(event, name, try_int(getattr(event, name)))

return (event, )

与Tkdnd一起，您将发现一个tkdnd.tcl程序，它比它提供的C扩展更高一级。我没有包装这个高级代码，但是用Python复制它可能比使用这个低级包装器更有趣。