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Python tkinter自定义多选下拉列表框(带滚动条、全选)_tkinter 下拉框选择

作者：人工智能uu | 2024-07-12 09:28:45

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tkinter 下拉框选择

包括3个文件：
1、demo.py文件
2、ComBoPicker.py文件
3、ComBoPicker1.py文件

问题方法
怎么动态赋值COMBOPICKER.values = [1,2,3,4]
获取选中值1.COMBOPICKER.current_value
2.COMBOPICKER.get()
3.COMBOPICKER.entry_var.get()

效果如下图：

demo.py文件

  1.  
  2. from tkinter import *
  3. from ComBoPicker import Combopicker# 导入自定义下拉多选框
  4. from ComBoPicker1 import Combopicker as Combopicker1# 导入自定义下拉多选框
  5. if __name__ == "__main__":
  6.     
  7.  
  8.     root = Tk()
  9.     root.geometry("300x300")
  10.  
  11.     F =Frame(root)
  12.     F.pack(expand=False, fill="both",padx=10,pady=10)
  13.     Label(F,text='全选、可滚动：').pack(side='left')
  14.     COMBOPICKER = Combopicker(F, values = ['全选','项目1','项目2','项目3','项目4','项目5','项目11','项目22','项目33','项目44','项目55'])
  15.     COMBOPICKER.pack(anchor="w")
  16.  
  17.     
  18.     F2 =Frame(root)
  19.     F2.pack(expand=False, fill="both",padx=10,pady=10)
  20.     Label(F2,text='普通：').pack(side='left')
  21.     COMBOPICKER1 = Combopicker1(F2, values = [f'项目{i}' for i in range(5)])
  22.     COMBOPICKER1.pack(anchor="w")
  23.  
  24.     root.mainloop()
  25.

ComBoPicker.py文件

  1. '''
  2. 	自定义多选下拉列表
  3. '''
  4. import tkinter.font as tkFont
  5. import tkinter.ttk as ttk
  6. from tkinter import *
  7. class Picker(ttk.Frame):
  8.  
  9.     def __init__(self, master=None,activebackground='#b1dcfb',values=[],entry_wid=None,activeforeground='black', selectbackground='#003eff', selectforeground='white', command=None, borderwidth=1, relief="solid"):
  10.  
  11.         self._selected_item = None
  12.  
  13.         self._values = values
  14.  
  15.         self._entry_wid = entry_wid
  16.  
  17.         self._sel_bg = selectbackground 
  18.         self._sel_fg = selectforeground
  19.  
  20.         self._act_bg = activebackground 
  21.         self._act_fg = activeforeground
  22.  
  23.         self._command = command
  24.         ttk.Frame.__init__(self, master, borderwidth=borderwidth, relief=relief)
  25.  
  26.         self.bind("<FocusIn>", lambda event:self.event_generate('<<PickerFocusIn>>'))
  27.         self.bind("<FocusOut>", lambda event:self.event_generate('<<PickerFocusOut>>'))
  28.  
  29.         self._font = tkFont.Font()
  30.  
  31.         self.dict_checkbutton = {}
  32.         self.dict_checkbutton_var = {}
  33.         self.dict_intvar_item = {}
  34.  
  35.         for index,item in enumerate(self._values):
  36.  
  37.             self.dict_intvar_item[item] = IntVar()
  38.             self.dict_checkbutton[item] = ttk.Checkbutton(self, text = item, variable=self.dict_intvar_item[item],command=lambda ITEM = item:self._command(ITEM))
  39.             self.dict_checkbutton[item].grid(row=index, column=0, sticky=NSEW)
  40.             self.dict_intvar_item[item].set(0)
  41.  
  42.  
  43. class Combopicker(ttk.Entry, Picker):
  44.     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"):
  45.         
  46.         self.values=values
  47.  
  48.         if entryvar is not None:
  49.             self.entry_var = entryvar
  50.         else:
  51.             self.entry_var = StringVar()
  52.  
  53.         entry_config = {}
  54.         if entrywidth is not None:
  55.             entry_config["width"] = entrywidth
  56.  
  57.         if entrystyle is not None:
  58.             entry_config["style"] = entrystyle
  59.  
  60.         ttk.Entry.__init__(self, master, textvariable=self.entry_var, **entry_config, state = "readonly")
  61.  
  62.         self._is_menuoptions_visible = False
  63.  
  64.         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)
  65.  
  66.         self.bind_all("<1>", self._on_click, "+")
  67.  
  68.         self.bind("<Escape>", lambda event: self.hide_picker())
  69.  
  70.     @property
  71.     def current_value(self):
  72.         try:
  73.             value = self.entry_var.get()
  74.             return value
  75.         except ValueError:
  76.             return None
  77.  
  78.     @current_value.setter
  79.     def current_value(self, INDEX):
  80.         self.entry_var.set(self.values.index(INDEX))
  81.  
  82.     def _on_selected_check(self, SELECTED):
  83.  
  84.         value = []
  85.         if self.entry_var.get() != "" and self.entry_var.get() != None:
  86.             temp_value = self.entry_var.get()
  87.             value = temp_value.split(",")
  88.  
  89.         if str(SELECTED) in value:
  90.             value.remove(str(SELECTED))
  91.  
  92.         else:    
  93.             value.append(str(SELECTED))
  94.  
  95.         value.sort()
  96.  
  97.         temp_value = ""
  98.         for index,item in enumerate(value):
  99.             if item!= "":
  100.                 if index != 0:
  101.                     temp_value += ","
  102.                 temp_value += str(item)
  103.  
  104.         self.entry_var.set(temp_value)
  105.  
  106.     def _on_click(self, event):
  107.         str_widget = str(event.widget)
  108.  
  109.         if str_widget == str(self):
  110.             if not self._is_menuoptions_visible:
  111.                 self.show_picker()
  112.         else:
  113.             if not str_widget.startswith(str(self.picker_frame)) and self._is_menuoptions_visible:
  114.                 self.hide_picker()
  115.  
  116.     def show_picker(self):
  117.         if not self._is_menuoptions_visible:
  118.             self.picker_frame.place(in_=self, relx=0, rely=1, relwidth=1 )
  119.             self.picker_frame.lift()
  120.  
  121.         self._is_menuoptions_visible = True
  122.  
  123.     def hide_picker(self):
  124.         if self._is_menuoptions_visible:
  125.             self.picker_frame.place_forget()
  126.  
  127.         self._is_menuoptions_visible = False
  128.  
  129.  
  130.  
'
运行

ComBoPicker1.py文件

  1. '''
  2. 	自定义多选下拉列表
  3. '''
  4. import tkinter.font as tkFont
  5. import tkinter.ttk as ttk
  6. from tkinter import *
  7. class Picker(ttk.Frame):
  8.  
  9.     def __init__(self, master=None,activebackground='#b1dcfb',values=[],entry_wid=None,activeforeground='black', selectbackground='#003eff', selectforeground='white', command=None, borderwidth=1, relief="solid"):
  10.  
  11.         self._selected_item = None
  12.  
  13.         self._values = values
  14.  
  15.         self._entry_wid = entry_wid
  16.  
  17.         self._sel_bg = selectbackground 
  18.         self._sel_fg = selectforeground
  19.  
  20.         self._act_bg = activebackground 
  21.         self._act_fg = activeforeground
  22.  
  23.         self._command = command
  24.         ttk.Frame.__init__(self, master, borderwidth=borderwidth, relief=relief)
  25.  
  26.         self.bind("<FocusIn>", lambda event:self.event_generate('<<PickerFocusIn>>'))
  27.         self.bind("<FocusOut>", lambda event:self.event_generate('<<PickerFocusOut>>'))
  28.  
  29.         self._font = tkFont.Font()
  30.  
  31.         self.dict_checkbutton = {}
  32.         self.dict_checkbutton_var = {}
  33.         self.dict_intvar_item = {}
  34.  
  35.         for index,item in enumerate(self._values):
  36.  
  37.             self.dict_intvar_item[item] = IntVar()
  38.             self.dict_checkbutton[item] = ttk.Checkbutton(self, text = item, variable=self.dict_intvar_item[item],command=lambda ITEM = item:self._command(ITEM))
  39.             self.dict_checkbutton[item].grid(row=index, column=0, sticky=NSEW)
  40.             self.dict_intvar_item[item].set(0)
  41.  
  42.  
  43. class Combopicker(ttk.Entry, Picker):
  44.     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"):
  45.         
  46.         self.values=values
  47.  
  48.         if entryvar is not None:
  49.             self.entry_var = entryvar
  50.         else:
  51.             self.entry_var = StringVar()
  52.  
  53.         entry_config = {}
  54.         if entrywidth is not None:
  55.             entry_config["width"] = entrywidth
  56.  
  57.         if entrystyle is not None:
  58.             entry_config["style"] = entrystyle
  59.  
  60.         ttk.Entry.__init__(self, master, textvariable=self.entry_var, **entry_config, state = "readonly")
  61.  
  62.         self._is_menuoptions_visible = False
  63.  
  64.         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)
  65.  
  66.         self.bind_all("<1>", self._on_click, "+")
  67.  
  68.         self.bind("<Escape>", lambda event: self.hide_picker())
  69.  
  70.     @property
  71.     def current_value(self):
  72.         try:
  73.             value = self.entry_var.get()
  74.             return value
  75.         except ValueError:
  76.             return None
  77.  
  78.     @current_value.setter
  79.     def current_value(self, INDEX):
  80.         self.entry_var.set(self.values.index(INDEX))
  81.  
  82.     def _on_selected_check(self, SELECTED):
  83.  
  84.         value = []
  85.         if self.entry_var.get() != "" and self.entry_var.get() != None:
  86.             temp_value = self.entry_var.get()
  87.             value = temp_value.split(",")
  88.  
  89.         if str(SELECTED) in value:
  90.             value.remove(str(SELECTED))
  91.  
  92.         else:    
  93.             value.append(str(SELECTED))
  94.  
  95.         value.sort()
  96.  
  97.         temp_value = ""
  98.         for index,item in enumerate(value):
  99.             if item!= "":
  100.                 if index != 0:
  101.                     temp_value += ","
  102.                 temp_value += str(item)
  103.  
  104.         self.entry_var.set(temp_value)
  105.  
  106.     def _on_click(self, event):
  107.         str_widget = str(event.widget)
  108.  
  109.         if str_widget == str(self):
  110.             if not self._is_menuoptions_visible:
  111.                 self.show_picker()
  112.         else:
  113.             if not str_widget.startswith(str(self.picker_frame)) and self._is_menuoptions_visible:
  114.                 self.hide_picker()
  115.  
  116.     def show_picker(self):
  117.         if not self._is_menuoptions_visible:
  118.             self.picker_frame.place(in_=self, relx=0, rely=1, relwidth=1 )
  119.             self.picker_frame.lift()
  120.  
  121.         self._is_menuoptions_visible = True
  122.  
  123.     def hide_picker(self):
  124.         if self._is_menuoptions_visible:
  125.             self.picker_frame.place_forget()
  126.  
  127.         self._is_menuoptions_visible = False
  128.  
  129.  
  130.  
'
运行

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