多选下拉列表增加纵向滚动条
网上看到一个多选下拉列表示范，想给它加一个纵向滚动条，一直没弄成功，请高手指点一下demo.py文件
from tkinter import *
from ComBoPicker import Combopicker# 导入自定义下拉多选框
if __name__ == "__main__":
root = Tk()
root.geometry("200x200")
main =Frame(root)
main.pack(expand=False, fill="both")
COMBOPICKER1 = Combopicker(main, values = ['CELL-S1','CELL-S2','CELL-S3','CELL-S4'])
COMBOPICKER1.pack(anchor="w")
root.mainloop()
ComBoPicker.py文件
'''
自定义多选下拉列表
'''
import tkinter.font as tkFont
import tkinter.ttk as ttk
from tkinter import *
class Picker(ttk.Frame):
def __init__(self, master=None,activebackground='#b1dcfb',values=[],entry_wid=None,activeforeground='black', selectbackground='#003eff', selectforeground='white', command=None, borderwidth=1, relief="solid"):
self._selected_item = None
self._values = values
self._entry_wid = entry_wid
self._sel_bg = selectbackground
self._sel_fg = selectforeground
self._act_bg = activebackground
self._act_fg = activeforeground
self._command = command
ttk.Frame.__init__(self, master, borderwidth=borderwidth, relief=relief)
self.bind("<FocusIn>", lambda event:self.event_generate('<<PickerFocusIn>>'))
self.bind("<FocusOut>", lambda event:self.event_generate('<<PickerFocusOut>>'))
self._font = tkFont.Font()
self.dict_checkbutton = {}
self.dict_checkbutton_var = {}
self.dict_intvar_item = {}
for index,item in enumerate(self._values):
self.dict_intvar_item = IntVar()
self.dict_checkbutton = ttk.Checkbutton(self, text = item, variable=self.dict_intvar_item,command=lambda ITEM = item:self._command(ITEM))
self.dict_checkbutton.grid(row=index, column=0, sticky=NSEW)
self.dict_intvar_item.set(0)
class Combopicker(ttk.Entry, Picker):
def __init__(self, master, values= [] ,entryvar=None, entrywidth=None, entrystyle=None, onselect=None,activebackground='#b1dcfb', activeforeground='black', selectbackground='#003eff', selectforeground='white', borderwidth=1, relief="solid"):
if entryvar is not None:
self.entry_var = entryvar
else:
self.entry_var = StringVar()
entry_config = {}
if entrywidth is not None:
entry_config["width"] = entrywidth
if entrystyle is not None:
entry_config["style"] = entrystyle
ttk.Entry.__init__(self, master, textvariable=self.entry_var, **entry_config, state = "readonly")
self._is_menuoptions_visible = False
self.picker_frame = Picker(self.winfo_toplevel(), values=values,entry_wid = self.entry_var,activebackground=activebackground, activeforeground=activeforeground, selectbackground=selectbackground, selectforeground=selectforeground, command=self._on_selected_check)
self.bind_all("<1>", self._on_click, "+")
self.bind("<Escape>", lambda event: self.hide_picker())
@property
def current_value(self):
try:
value = self.entry_var.get()
return value
except ValueError:
return None
@current_value.setter
def current_value(self, INDEX):
self.entry_var.set(values.index(INDEX))
def _on_selected_check(self, SELECTED):
value = []
if self.entry_var.get() != "" and self.entry_var.get() != None:
temp_value = self.entry_var.get()
value = temp_value.split(",")
if str(SELECTED) in value:
value.remove(str(SELECTED))
else:
value.append(str(SELECTED))
value.sort()
temp_value = ""
for index,item in enumerate(value):
if item!= "":
if index != 0:
temp_value += ","
temp_value += str(item)
self.entry_var.set(temp_value)
def _on_click(self, event):
str_widget = str(event.widget)
if str_widget == str(self):
if not self._is_menuoptions_visible:
self.show_picker()
else:
if not str_widget.startswith(str(self.picker_frame)) and self._is_menuoptions_visible:
self.hide_picker()
def show_picker(self):
if not self._is_menuoptions_visible:
self.picker_frame.place(in_=self, relx=0, rely=1, relwidth=1 )
self.picker_frame.lift()
self._is_menuoptions_visible = True
def hide_picker(self):
if self._is_menuoptions_visible:
self.picker_frame.place_forget()
self._is_menuoptions_visible = False
请高手帮忙指点一下
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