显示模式窗口时隐藏Tkinter根窗口

看来，在您的情况下，模态窗口没有差异。实际上，您只需要使用该wait_window()方法。根据文档：

在许多情况下，以同步方式处理对话框更为实用。创建对话框，显示它，等待用户关闭对话框，然后继续执行您的应用程序。正是我们需要的wait_window方法；它会进入一个本地事件循环，直到给定的窗口被销毁（通过destroy方法或显式地通过窗口管理器）后才会返回。

考虑以下非模态窗口示例：

from Tkinter import *

root = Tk()

def go():
   wdw = Toplevel()
   wdw.geometry('+400+400')
   e = Entry(wdw)
   e.pack()
   e.focus_set()
   #wdw.transient(root)
   #wdw.grab_set()
   root.wait_window(wdw)
   print 'done!'

Button(root, text='Go', command=go).pack()
Button(root, text='Quit', command=root.destroy).pack()

root.mainloop()

当您单击Go按钮时，将出现非模态对话框，但是代码将停止执​​行，并且done!仅在关闭对话框窗口后才会显示字符串。

如果这是您想要的行为，那么这是修改后的形式的示例（我__init__在TkGui和make_modalmethod中进行了修改，还添加了mainloop()）：

from Tkinter import *
from ttk import *

class TkGui(object):
    def __init__(self):
        self.root = root = Tk()
        self.root.withdraw()
        selector = FolderSelection(self.root, ('foo', 'bar'))
        self.root.deiconify()
        print(selector.result)

class ChildWindow(object): #Base class
    def __init__(self, parent, title):
        top = self.top = Toplevel(parent)
        self.parent = parent
        top.title(title)
        f = Frame(top)
        self.create_controls(f)
        f.pack(fill=BOTH, expand=Y)

    def create_controls(self, container):
        pass

    def make_modal(self, on_cancel):
        #self.top.transient(self.parent)
        #self.top.wait_visibility() # Python will hang here...
        #self.top.grab_set()
        self.top.focus_set()
        self.top.protocol("WM_DELETE_WINDOW", on_cancel)
        self.top.wait_window(self.top) # ...or here, if wait_visibility is removed

class FolderSelection(ChildWindow):
    def __init__(self, parent, folders):
        self.parent = parent
        self.listvar = Variable(parent)
        self.folderlist = None
        super(FolderSelection, self).__init__(parent, 'Select folder')
        self.result = ''
        self.listvar.set(folders)
        self.make_modal(self.cancel)

    def create_controls(self, container):
        f = Frame(container)
        Label(
            f, text='Please select the folder '
            'you would like to use.').grid(column=0, row=0)
        self.folderlist = Listbox(
            f, listvariable=self.listvar, activestyle='dotbox')
        self.folderlist.grid(column=0, row=1, sticky="nsew")
        Button(
            f, text='OK', command=self.ok
            ).grid(column=0, row=2, sticky="s")
        self.folderlist.bind("<Double-1>", lambda e: self.ok())
        f.pack(fill=BOTH, expand=Y)

    def ok(self):
        if len(self.folderlist.curselection()) != 0:
            self.result = self.folderlist.get(self.folderlist.curselection()[0])
            self.top.protocol('WM_DELETE_WINDOW', None)
            self.top.destroy()

    def cancel(self):
        self.top.destroy()

TkGui()
mainloop()

代码停止在线selector = FolderSelection(self.root, ('foo', 'bar'))，然后在关闭对话框后继续执行。