擅长:python、mysql、java
<p>当您为条目<code>messagebox</code>提供错误数据时将弹出消息框的登录系统应输入条目,否则消息框将弹出,提示您发生错误</p>
<pre><code>from tkinter import *
from tkinter import messagebox
def top():
if entry1.get() == "messagebox":
log.destroy()
root.deiconify()
else:
messagebox.showerror("error", "try again")
messagebox.showinfo("my message","this is an example of showinfo\nmessagebox")
messagebox.showwarning("warning", "show warning example in tkinter" )
root = Tk()
root.geometry("400x400")
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()
</code></pre>