由tkinter写成，可实现拖动桌面pdf文件或者文件夹中的pdf文件，放入展示框，并展示绝对路径，可用在Python的GUI界面中，实现用户快速单一或批量选择大量文件。

        此外，可修改源码中的文件后缀名，选择其他所需要的文件。

效果图：

源码：

from tkinter import *

import re

class TkDnD:

def __init__(self, tkroot):

self._tkroot = tkroot

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

tkroot.dnd = self

def bindsource(self, widget, type=None, command=None, arguments=None, priority=None):

command = self._generate_callback(command, arguments)

tkcmd = self._generate_tkcommand('bindsource', widget, type, command, priority)

res = self._tkroot.tk.eval(tkcmd)

if type == None:

res = res.split()

return res

def bindtarget(self, widget, type=None, sequence=None, command=None, arguments=None, priority=None):

command = self._generate_callback(command, arguments)

tkcmd = self._generate_tkcommand('bindtarget', widget, type, sequence, command, priority)

res = self._tkroot.tk.eval(tkcmd)

if type == None:

res = res.split()

return res

def clearsource(self, widget):

self._tkroot.tk.call('dnd', 'clearsource', widget)

def cleartarget(self, widget):

self._tkroot.tk.call('dnd', 'cleartarget', widget)

def drag(self, widget, actions=None, descriptions=None, cursorwindow=None, command=None, arguments=None):

command = self._generate_callback(command, arguments)

if actions:

if actions[1:]:

actions = '-actions {%s}' % ' '.join(actions)

else:

actions = '-actions %s' % actions[0]

if descriptions:

descriptions = ['{%s}' % i for i in descriptions]

descriptions = '{%s}' % ' '.join(descriptions)

if cursorwindow:

cursorwindow = '-cursorwindow %s' % cursorwindow

tkcmd = self._generate_tkcommand('drag', widget, actions, descriptions, cursorwindow, command)

self._tkroot.tk.eval(tkcmd)

def _generate_callback(self, command, arguments):

cmd = None

if command:

cmd = self._tkroot._register(command)

if arguments:

cmd = '{%s %s}' % (cmd, ' '.join(arguments))

return cmd

def _generate_tkcommand(self, base, widget, *opts):

tkcmd = 'dnd %s %s' % (base, widget)

for i in opts:

if i is not None:

tkcmd += ' %s' % i

return tkcmd

# 将拖入的文件添加到listbox中

def drop(files):

if isinstance(files, str):

files = re.sub(u"{.*?}", "", files).split() # 通过空格切分多文件，所以文件名中不能有空格

for file in files:

if file.endswith('.pdf'):

#添加到列表

lb.insert("end", file)

if __name__ == '__main__':

window = Tk()

window.geometry('800x500') # 位置设置

window.wm_resizable(False, False) # 不允许修改长宽

dnd = TkDnD(window)

# #列表控件

lb = Listbox(window, height=10, width=60, selectmode=SINGLE)

dnd.bindtarget(lb, 'text/uri-list', '', drop, ('%D',))

lb.place(relx=0.20, rely=0.12)

window.mainloop()

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