[D]关于tkinter
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：

Python code

# File: tkSimpleDialog.pyfrom Tkinter import *import osclass 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 tkSimpleDialogclass 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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[解决办法]
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...