Question

image for that 我这里有几行代码是登录系统工作正常，但是当我提供错误的密码而不关闭Toplevel时，我可以多次点击messagebox按钮。我怎样才能这样做在我再次尝试之前必须关闭messagebox。

from tkinter import *
from tkinter import messagebox


def top():
    if entry1.get() == "333":
       log.destroy()
       root.deiconify()
    else:
       messagebox.showerror("error", "try again")


root = Tk()
root.geometry("300x300")

log = Toplevel(root)
log.geometry("200x200")


label1 = Label(log, text="password")
entry1 = Entry(log)
button1 = Button(log, text="login", command=top)

label1.pack()
entry1.pack()
button1.pack(side="bottom")

lab = Label(root, text="welcome bro").pack()


root.withdraw()
root.mainloop()

Answer 1

您需要将日志窗口设置为对话框的父级：

messagebox.showerror("error", "try again", parent=log)

默认情况下，它将使用根窗口（Tk实例）作为父窗口，在这种情况下，它不是您想要的。

Answer 2

通过@furas的提示，如何实现这个：

在条目不匹配时为其调用创建另一个函数，并在Toplevel窗口tp.grab_set()中使用grab_set方法。您可以将您的惯常图像添加到Toplevel窗口以及在框中显示的消息（这里：我用标签来描绘）

from tkinter import *
from tkinter import messagebox



def dialog():  #  this function to call when entry doesn't match 
    tp = Toplevel(log)
    tp.geometry("300x100")
    tp.title('error')
    tp.grab_set()  # to bring the focus to the window for you to close it
    tp.resizable(width=False, height=False)
    l = Label(tp, text="try again\n\n\n\n add your customarize image to the window")
    l.pack()


def top():
    if entry1.get() == "333":
    log.destroy()
    root.deiconify()
else:
    dialog()  # being called here 


root = Tk()
root.geometry("300x300")

log = Toplevel(root)
log.geometry("200x200")


label1 = Label(log, text="password")
entry1 = Entry(log)
button1 = Button(log, text="login", command=top)

label1.pack()
entry1.pack()
button1.pack(side="bottom")

lab = Label(root, text="welcome bro").pack()


root.withdraw()

root.mainloop()

如何为Toplevel窗口强制关闭消息框

2 个答案: