如何单击 Tkinter 中的按钮来创建新窗口
在本教程中，我们将介绍如何通过单击 Tkinter 中的按钮来创建和打开新的 Tkinter 窗口。
创建一个新 Tkinter 窗口
import tkinter as tk
def createNewWindow():
newWindow = tk.Toplevel(app)
app = tk.Tk()
buttonExample = tk.Button(app,
text="Create new window",
command=createNewWindow)
buttonExample.pack()
app.mainloop()
通常我们用 tk.Tk() 来创建一个新的 Tkinter 窗口，但是如果我们已经创建了一个如上面的代码所示的 root 窗口，那这样是无效的。
在这种情况下 Toplevel 是正确的实现索要功能的窗口控件，因为 Toplevel 窗口控件旨在显示额外的 pop-up 窗口。
buttonExample = tk.Button(app,
text="Create new window",
command=createNewWindow)
它将 createNewWindow 功能绑定到按钮。
在上面的示例中，新窗口是一个空窗口，你可以向其添加更多控件，就像在普通的 root 窗口中添加控件一样，但是需要将父控件更改为新创建的 Toplevel 窗口。
import tkinter as tk
def createNewWindow():
newWindow = tk.Toplevel(app)
labelExample = tk.Label(newWindow, text = "New Window")
buttonExample = tk.Button(newWindow, text = "New Window button")
labelExample.pack()
buttonExample.pack()
app = tk.Tk()
buttonExample = tk.Button(app,
text="Create new window",
command=createNewWindow)
buttonExample.pack()
app.mainloop()
labelExample 和 buttonExample 将其父窗口控件设为 newWindow 而不是 app。
Founder of DelftStack.com. Jinku has worked in the robotics and automotive industries for over 8 years. He sharpened his coding skills when he needed to do the automatic testing, data collection from remote servers and report creation from the endurance test. He is from an electrical/electronics engineering background but has expanded his interest to embedded electronics, embedded programming and front-/back-end programming.
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