[D]关于tkinter

[forfrt]

最近开始学习tkinter，用的是an-introduction-to-tkinter,在实践书上代码时出的问题：

这是书上的自定义类：

# File: tkSimpleDialog.py
from Tkinter import *
import os
class Dialog(Toplevel):
    def __init__(self, parent, title = None):
        
        Toplevel.__init__(self, parent)
        self.transient(parent)
        
        if title:
            self.title(title)
            
        self.parent = parent
        
        self.result = None #
        
        body = Frame(self)
        self.initial_focus = self.body(body)
        body.pack(padx=5, pady=5)
        
        self.buttonbox()
        
        self.grab_set()
        
        if not self.initial_focus:
            self.initial_focus = self
        self.protocol("WM_DELETE_WINDOW", self.cancel)
        self.geometry("+%d+%d" % (parent.winfo_rootx()+50,
                                  parent.winfo_rooty()+50))
        self.initial_focus.focus_set()
        self.wait_window(self)
    #
    # construction hooks
    
    def body(self, master):
        # create dialog body.  return widget that should have
        # initial focus.  this method should be overridden
        
        pass
    
    def buttonbox(self):
        # add standard button box. override if you don't want the
        # standard buttons
        
        box = Frame(self)

        w = Button(box, text="OK", width=10, command=self.ok, default=ACTIVE)
        w.pack(side=LEFT, padx=5, pady=5)
        w = Button(box, text="Cancel", width=10, command=self.cancel)
        w.pack(side=LEFT, padx=5, pady=5)
        
        self.bind("<Enter>", self.ok)
        self.bind("<Escape>", self.cancel)

        box.focus_set()
        box.pack()
        
    #
    # standard button semantics
    def ok(self, event=None):
        if not self.validate():
            self.initial_focus.focus_set() # put focus back
            return
        
        self.withdraw()
        self.update_idletasks()
        
        self.apply()
        
        self.cancel()
        
    def cancel(self, event=None):
        # put focus back to the parent window
        self.parent.focus_set()
        self.destroy()
        
    #
    # command hooks
    
    def validate(self):
        
        return 1 # override
    
    def apply(self):
        
        pass # override

这是上面类的继承类：
from Tkinter import *

import tkSimpleDialog
class MyDialog(tkSimpleDialog.Dialog):
    def body(self, master):
        Label(master, text="First:").grid(row=0)
        Label(master, text="Second:").grid(row=1)
        
        self.e1 = Entry(master)
        self.e2 = Entry(master)
        
        self.e1.grid(row=0, column=1)
        self.e2.grid(row=1, column=1)
        return self.e1 # initial focus
    
    def apply(self):
        first = (self.e1.get())
        second = (self.e2.get())
        print(first, second) # or something
        
root=Tk()
dialog=MyDialog(root)
root.mainloop()

然而每次运行时出现的dialog窗口在鼠标移上去没有进行任何操作就会消失，命令行上print:'',''，查过了tkinter文档中涉及的每个方法，还是没找出原因，求教
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Double行动：
原帖分数：40
帖子加分：40

[angel_su]

你可能抄错了吧，self.bind("<Enter>", self.ok)这个就是绑定鼠标进入就apply退出，你没机会输入的。这个文件在Pythonxx\Lib\lib-tk里面就有的，它是self.bind("<Return>", self.ok)绑定回车才apply。所以把你提供的tkSimpleDialog.py删了吧...