Question

我是python的新手，正在尝试创建一个应用程序，在该应用程序中，我希望仅在单击“显示”按钮后才能看到按钮。该按钮从应用程序的开始就不可见，而应仅在单击“显示”按钮后才可见。你们可以帮我吗？

我有这段代码，该代码在单击另一个按钮后将其隐藏。隐藏按钮后，它将文本更改为“显示”。


from tkinter import *

root = Tk()

btn1 = Button(root,text="Example")
btn1.visible = True
btn1.place(x=20, y=50)
btn1.pi = btn1.place_info()

btn3 = Button(root, text="click me", command=lambda:plugin())
btn3.place(x=20, y=150)

def plugin():
    master = Tk()

    def toggle1():
        if btn1.visible:
            btnToggle1["text"] = "Show Example"
            print ("Now you don't")
            btn1.place_forget()
        else:
            btn1.place(btn1.pi)
            print ("Now you see it")
            btnToggle1["text"] = "Hide Example"
        btn1.visible = not btn1.visible


    btnToggle1 = Button(master, text="Hide Example", command=toggle1)
    btnToggle1.place(x=70, y=150)

    master.mainloop()

root.mainloop()

我希望仅在单击“显示”按钮后才显示该按钮，而不是一开始。

Answer 1

我希望这就是你的意思：

from tkinter import *
import tkinter

root = Tk()

btn1 = Button(root,text="Example")
btn1.visible = True
btn1.place(x=20, y=50)
btn1.pi = btn1.place_info()

btn3 = Button(root, text="click me", command=lambda:plugin())
btn3.place(x=20, y=150)

def plugin():
    master = Tk()

    def toggle1():
        if btn1.visible:
            btnToggle1["text"] = "Show Example"
            btnToggle1["state"] = DISABLED
            print ("Now you don't")
            btn1.place_forget()
        else:
            btn1.place(btn1.pi)
            print ("Now you see it")
            btnToggle1["state"] = NORMAL
            btnToggle1["text"] = "Hide Example"
        btn1.visible = not btn1.visible


    btnToggle1 = Button(master, text="Hide Example", command=toggle1)
    btnToggle1.place(x=70, y=150)

    master.mainloop()

root.mainloop()

Answer 2

为了更改小部件的可见性，您必须使用 .pack_forget() 函数才能这样做。

此问题已在此处回答：In Tkinter is there any way to make a widget not visible?

如何在Tkinter中更改按钮的可见性？

2 个答案: