[問題] tk窗口如何總是出現在最上層

[kkagt (乎嘎蝦嘎)]

先上code
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import os
import cv2
import tkinter as tk
from tkinter import filedialog

# global variable
class gloabl_variable:
    isExit = False
    saver_folder = None
    image_folder = None
    pred = None
    img = None
    name = None

G = gloabl_variable()

class main_tk(tk.Frame):
    def __init__(self,master):
        self.master=master
        tk.Frame.__init__(self,master)
        master.title("Menu")
        master.geometry("240x180")
        self.pack()
        self.createwidget()

    def createwidget(self):
        self.load_btn=tk.Button(self, text="Select Image Folder", height = 2,
width = 20,command=self.clickLoad)
        self.load_btn['font'] =['Times', '14', 'normal']
        self.load_btn.pack()

        self.select_btn=tk.Button(self, text="Select Saver Folder", height =
2, width = 20,command=self.clickSelect)
        self.select_btn['font'] =['Times', '14', 'normal']
        self.select_btn.pack()

        self.start_btn=tk.Button(self, text="Start", height = 2, width =
20,command=self.clickStart)
        self.start_btn['font'] =['Times', '14', 'normal']
        self.start_btn.pack()

    def clickLoad(self):
        options = {}
        options['title'] = "tkFileDialog.askdirectory"
        fs = filedialog.askdirectory(**options)

        if fs:
            print (fs)
            G.image_folder = fs
        else:
            print ("Without selected!")

    def clickSelect(self):
        options = {}
        options['title'] = "tkFileDialog.askdirectory"
        fs = filedialog.askdirectory(**options)
        if fs:
            print (fs)
            G.saver_folder = fs
        else:
            print ("Without selected!")

    def clickStart(self):
        self.master.destroy()
        for name in os.listdir(G.image_folder)[0:500]:
            G.img = os.path.join(G.image_folder, name)
            G.name = name[:-4]
            G.pred = name.split('_')[3][:-4]
            img = cv2.imread(G.img)
            cv2.namedWindow('img', cv2.WINDOW_NORMAL)
            cv2.imshow('img', img)

            pred = tk.Tk()
            pred_tk(master=pred)
            pred.mainloop()

class pred_tk(tk.Frame):
    def __init__(self,master):
        self.master=master
        tk.Frame.__init__(self,master)
        master.title("pred")
        master.geometry("240x100+30+30")
        master.resizable(0, 0)
        master.attributes("-topmost", 1)
        self.pack()
        self.createwidget()
    def createwidget(self):

        self.label = tk.Label(self, text=G.pred)
        self.label['font'] = ['Times', '20', 'bold']
        self.label.pack()

        self.e1 = tk.Entry(self)
        self.e1['font'] = ['Times', '20', 'normal']
        self.e1.pack()
        self.e1.focus()
        self.e1.bind('<Return>', self.get)

    def get(self, event):
        self.rename_close()

    def rename_close(self):
        if self.e1.get() != '' and self.e1.get() != G.pred:
            if not os.path.isdir( os.path.join(G.saver_folder, self.e1.get())
):
                os.mkdir(os.path.join(G.saver_folder, self.e1.get()))
            img1 = cv2.imread(G.img)
            cv2.imwrite( os.path.join(G.saver_folder, self.e1.get(),
G.name+'_'+self.e1.get()+'.jpg'), img1)
            cv2.destroyAllWindows()
            self.master.destroy()
        else:
            cv2.destroyAllWindows()
            self.master.destroy()

def main():
    win=tk.Tk()
    main_tk(master=win)
    win.mainloop()

    G.isExit = True
    print("All exit \n")

if __name__ == '__main__':
    main()
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code說明：
目的是要幫圖片更名

這個程式首先會建一個名字叫 Menu 的窗口(main_tk)
它可以讓我選擇我要讀的圖片所在資料夾和我更名後要存的資料夾

點擊 start 後 Menu 窗口會被我關掉
然後同時開起 opencv 讀進去的圖片畫面和pred這個窗口(pred_tk)

我要做的事情是判斷圖片實際訊息跟我print在窗口上的訊息有沒有吻合
如果不對的話我就會在下面輸入正確訊息後按 enter 存檔並同時關閉圖片和窗口
然後再讀入下一章圖片並開起下一個窗口

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問題說明：
因為想要增加效率，所以希望每次打開的 pred_tk 窗口總是在最上層
(這樣如果訊息沒問題就直接 enter 換下一張就好)
所以我加上了 master.attributes("-topmost", 1)
但不知道為什麼他仍然會在整個windows視窗的最底層
請問要如何解決這個問題？謝謝大家！


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→ chliu6: 我覺得問題可能出現在你用cv2.imshow()所產生的視窗實際上
→ chliu6: 與Tk没有任何關係 才會導致topmost無效
→ kkagt: 好的，那我試試看不要用opencv開圖片@@
→ kkagt: 用plt也沒用QQ
→ chliu6: 你可以考慮用Toplevel產生新的視窗 圖片再放入新的視窗中
→ chliu6: 再用一次Toplevel 做出一個對話視窗可以把對話視窗移到最
→ chliu6: 上層
→ chliu6: 不過用此方式你不能destroy TK()這個window
→ kkagt: 好的，我研究看看..感謝Orz