关于#python#的问题：其中的treeview绑定的双击事件无效

Question

其中的treeview绑定的双击事件无效，不显示任何东西

```python
from tkinter import *
from tkinter import ttk
from tkinter.ttk import Treeview

from test2.db import db


class search(Frame):
    def __init__(self,master):
        super().__init__(master)
        self.table_view=Frame()
        self.table_view.pack()

        self.create_page()

    def create_page(self):
        columns=("name","chinese","math","english")
        columns_values= ("姓名", "语文", "数学", "英语")
        self.tree_view =ttk.Treeview(self,show='headings',columns=columns)
        self.tree_view.column("name",width=80,anchor='center')
        self.tree_view.column("chinese", width=80, anchor='center')
        self.tree_view.column("math", width=80, anchor='center')
        self.tree_view.column("english", width=80, anchor='center')
        self.tree_view.heading('name',text="姓名")
        self.tree_view.heading('chinese',text="语文")
        self.tree_view.heading('math', text="数学")
        self.tree_view.heading('english', text="英语")
        self.tree_view.pack(fill=BOTH,expand=True)
        self.tree_view.bind("Double-Button-1>",self.dssdd)
        self.show_data_frame()

        Button(self,text="刷新数据",command=self.show_data_frame).pack(anchor=E,pady=5)

    def dssdd(self):
        print("dasdsadasd")

    def show_data_frame(self):
        for _ in map(self.tree_view.delete,self.tree_view.get_children('')):
            pass
        students=db.all()
        index=0
        for stu in students:
            print(stu)
            self.tree_view.insert("",index+1,values=(
                stu['name'],stu['math'],stu['chinese'],stu['english']
            ))

Answer 1

晚上好🌙🌙🌙
本答案参考ChatGPT-3.5

问题分析：

代码中绑定双击事件的代码是：self.tree_view.bind("Double-Button-1>",self.dssdd)，应该是绑定错误，正确的应该是self.tree_view.bind("<Double-Button-1>",self.dssdd)。

解决方案：

1. 更改treeview绑定双击事件的代码：self.tree_view.bind("<Double-Button-1>",self.dssdd)。

2. 确认双击事件绑定成功后，修改展示方法show_data_frame获取到的数据进行展示。

修改后的代码如下：

from tkinter import *
from tkinter import ttk
from tkinter.ttk import Treeview

from test2.db import db


class search(Frame):
    def __init__(self,master):
        super().__init__(master)
        self.table_view=Frame()
        self.table_view.pack()

        self.create_page()

    def create_page(self):
        columns=("name","chinese","math","english")
        columns_values= ("姓名", "语文", "数学", "英语")
        self.tree_view =ttk.Treeview(self,show='headings',columns=columns)
        self.tree_view.column("name",width=80,anchor='center')
        self.tree_view.column("chinese", width=80, anchor='center')
        self.tree_view.column("math", width=80, anchor='center')
        self.tree_view.column("english", width=80, anchor='center')
        self.tree_view.heading('name',text="姓名")
        self.tree_view.heading('chinese',text="语文")
        self.tree_view.heading('math', text="数学")
        self.tree_view.heading('english', text="英语")
        self.tree_view.pack(fill=BOTH,expand=True)
        self.tree_view.bind("<Double-Button-1>",self.dssdd)
        self.show_data_frame()

        Button(self,text="刷新数据",command=self.show_data_frame).pack(anchor=E,pady=5)

    def dssdd(self, event):
        item = self.tree_view.selection()[0]
        print(self.tree_view.item(item, "values"))

    def show_data_frame(self):
        self.tree_view.delete(*self.tree_view.get_children())
        students=db.all()
        index=0
        for stu in students:
            print(stu)
            self.tree_view.insert("",index+1,values=(
                stu['name'],stu['math'],stu['chinese'],stu['english']
            ))

修改后，treeview双击事件生效，且能正确展示数据。