Tkinter在第二个窗口中显示网络摄像头视图

Question

我正在使用网络摄像头视图，并对拍摄的图像进行分析。我想介绍一种功能，可以调用一个窗口，如果用户愿意，可以在新窗口中查看网络摄像头视图。然而，当我打开新窗口时，我的尝试会导致主窗口中的按钮切换到实例。怎么了？

以下是我的（工作）示例：

import Tkinter as tk
import cv2
from PIL import Image, ImageTk
class CamView():  
    def __init__(self, parent):
        self.parent = parent
        self.window = tk.Toplevel(parent)
        self.window.protocol("WM_DELETE_WINDOW", self.close) 
        self.show_frame()
    def show_frame(self):
        imgtk = ImageTk.PhotoImage(image=self.parent.img)
        lmain.imgtk = imgtk
        lmain.configure(image=imgtk)
    def close(self):
        self.parent.test_frame = None
        self.window.destroy()
root = tk.Tk()
root.bind('<Escape>', lambda e: root.quit())
lmain = tk.Label(root)
lmain.pack()
class Main(tk.Frame):
    def __init__(self, parent):
        self.test_frame = None
        frame = tk.Frame.__init__(self,parent)
        a = tk.Label(text='hello!').pack()
        b = tk.Button(frame, text='open', command=self.load_window)
        b.pack()
        width, height = 800, 600
        self.cap = cv2.VideoCapture(0)
        self.cap.set(cv2.CAP_PROP_FRAME_WIDTH, width)
        self.cap.set(cv2.CAP_PROP_FRAME_HEIGHT, height)
        self.do_stuff()
    def do_stuff(self):
        _, frame = self.cap.read()
        frame = cv2.flip(frame, 1)
        cv2image = cv2.cvtColor(frame, cv2.COLOR_BGR2RGBA)
        self.img = Image.fromarray(cv2image)
        if self.test_frame != None:
            self.test_frame.show_frame()
        lmain.after(10, self.do_stuff)
    def load_window(self):
        self.test_frame = CamView(self)
control = Main(root)
root.mainloop()

在我的真实代码中，以及这个工作示例中，似乎当我加载新窗口时，它会在我不希望的时候将网络摄像头框架放在第一个窗口中！

Answer 1

已修复！我因为self.lmain而感到困惑。这是工作代码：

import Tkinter as tk
import cv2
from PIL import Image, ImageTk
class CamView():  
    def __init__(self, parent):
        self.parent = parent
        self.window = tk.Toplevel(parent)
        self.lmain2 = tk.Label(self.window)
        self.lmain2.pack()
        self.window.protocol("WM_DELETE_WINDOW", self.close) 
        self.show_frame()
    def show_frame(self):
        imgtk = ImageTk.PhotoImage(image=self.parent.img)
        self.lmain2.imgtk = imgtk
        self.lmain2.configure(image=imgtk)
    def close(self):
        self.parent.test_frame = None
        self.window.destroy()
root = tk.Tk()
root.bind('<Escape>', lambda e: root.quit())
class Main(tk.Frame):
    def __init__(self, parent):
        self.lmain = tk.Label(parent)
        self.lmain.pack()
        self.test_frame = None
        frame = tk.Frame.__init__(self,parent)
        a = tk.Label(text='hello!').pack()
        b = tk.Button(frame, text='open', command=self.load_window)
        b.pack()
        width, height = 800, 600
        self.cap = cv2.VideoCapture(0)
        self.cap.set(cv2.CAP_PROP_FRAME_WIDTH, width)
        self.cap.set(cv2.CAP_PROP_FRAME_HEIGHT, height)
        self.do_stuff()
    def do_stuff(self):
        _, frame = self.cap.read()
        frame = cv2.flip(frame, 1)
        cv2image = cv2.cvtColor(frame, cv2.COLOR_BGR2RGBA)
        self.img = Image.fromarray(cv2image)
        if self.test_frame != None:
            self.test_frame.show_frame()
        self.lmain.after(10, self.do_stuff)
    def load_window(self):
        if self.test_frame == None:
            self.test_frame = CamView(self)
control = Main(root)
root.mainloop()