CODEWITHSUNDEEP
pythontkinter
shabhnam
shabhnam

Reputation: 11

how to remove an extra window in python Tkinter?

M trying to create a desktop app but facing some problem while switching between frames using button. Its working all fine but it gives me an extra blank window(consist nothing) when I run my project. Below is my code. Please suggest me any changes or error in my code.

import tkinter as tk

class Toplevel1(tk.Tk):
    def __init__(self, top=None, *args, **kwargs):
        tk.Tk.__init__(self, *args, **kwargs)

        top.geometry("600x450+306+137")
        top.minsize(120, 1)
        top.maxsize(1370, 749)
        top.resizable(1,  1)
        top.title("New Toplevel")
        top.configure(background="#d9d9d9")

        self.MenuFrame = tk.LabelFrame(top)
        self.MenuFrame.place(relx=0.0, rely=0.0, relheight=0.989, relwidth=0.25)
        self.MenuFrame.configure(relief='groove')
        self.MenuFrame.configure(foreground="black")
        self.MenuFrame.configure(background="#400080")

        self.Button1 = tk.Button(self.MenuFrame)
        self.Button1.place(relx=0.133, rely=0.067, height=24, width=107, bordermode='ignore')
        self.Button1.configure(background="#00ff80")
        self.Button1.configure(foreground="#000000")
        self.Button1.configure(pady="0")
        self.Button1.configure(text='''Button 1''')
        self.Button1.configure(command= lambda : self.show_frame(ButtonOne))
        
        self.MainWindow = tk.LabelFrame(top)
        self.MainWindow.place(relx=0.267, rely=0.111, relheight=0.767, relwidth=0.7)
        self.MainWindow.configure(relief='groove')
        self.MainWindow.configure(foreground="black")
        self.MainWindow.configure(background="#808040")

        self.frames = {}

        for F in (StartPage, ButtonOne):
            frame = F(self.MainWindow)
            self.frames[F] = frame

            frame.grid(row=0, column=0, sticky="nsew")

        self.show_frame(StartPage)

    def show_frame(self, cont):
        frame = self.frames[cont]
        frame.tkraise()


class StartPage(tk.Frame):
    def __init__(self, parent):
        tk.Frame.__init__(self, parent)
        # label of frame Layout 2


# second window frame page1
class ButtonOne(tk.Frame):

    def __init__(self, parent):
        tk.Frame.__init__(self, parent)
        label = tk.Label(self, text="Button 1 is pressed")
        label.pack()
         
    
if __name__ == '__main__':
    root = tk.Tk()
    app = Toplevel1(root)
    root.mainloop()

Upvotes: 0

Views: 321

Answers (2)

Bryan Oakley
Bryan Oakley

Reputation: 385970

This causes a window to be created:

class Toplevel1(tk.Tk):
    def __init__(self, top=None, *args, **kwargs):
        tk.Tk.__init__(self, *args, **kwargs)
        ...
...
app = Toplevel1(root)

And this causes a window to be created:

root = tk.Tk()

If you don't want Toplevel1 to be a separate window, don't inherit from tk.Tk. Instead, you can inherit from tk.Frame, and then you can call pack, place, or grid to add this to the root window.

However, it looks like you're intending for your Toplevel1 to be the true root window, so you can remove root = tk.Tk(). You can then do app.mainloop() rather than root.mainloop() You'll also have to make a few other adjustments, such as using self rather than top inside Toplevel1.__init__.

Put another way, if you want only one window then either inherit from tk.Tk or create an instance of tk.Tk, but don't do both.

Upvotes: 1

Qihua Huang
Qihua Huang

Reputation: 34

As on tkinter callbacks, tk.Tk in class Toplevel1 is about the same as Toplevel1=tk.Tk() which, in a sesne opens a new window. the third line from whitespace, tk.Tk.__init__(self, *args, **kwargs), it becomes useless.

Upvotes: 0

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