Question

我正在使用Tkinter获取用户的电子邮件地址，从电子邮件中读取图像，进行处理，然后希望在Tkinter画布中显示原始图像和处理后的图像，以及将处理后的图像发送回用户

以下是我的初始化和更新功能：

class App:
    def __init__(self, window, window_title, video_source=0):
        #create main Tkinter window
        sys.setrecursionlimit(500)  

        self.finish = None        
        self.window = window
        self.window.title(window_title)
        self.video_source = video_source
        window.resizable(0, 0)

        labelText = tkinter.StringVar()
        labelText.set ("")
        labelDir= tkinter.Label(window, textvariable = labelText, height = 0)
        labelDir.pack(side = "left")

        self.e = tkinter.Entry(self.window)
        self.e.pack()  
        self.w = tkinter.Label(window, text="Enter Your Email Address")
        self.w.pack()              
        self.thisFrame1 = None
        self.thisFrame2 = None
        self.c = ttk.Combobox(window, values=["Candy", "Wave", "Composition", 
                                                  "Feathers", "La_muse", "Mosaic", 
                                                  "Starry", "Scream", "Udnie"])
        self.c.pack()

        self.l = tkinter.Label(window, text="Choose your style")
        self.l.pack()  

        B1 = tkinter.Button(window, text="Send", command = self.close)
        B1.pack()


    def update(self):

        #from PIL import Image, ImageTk
        print("In update\n")

        img = ImageTk.PhotoImage(Image.fromarray(self.finish)) # First and maybe second copy.


        self.canvas = tkinter.Canvas(self.window, width = img.width(), height = img.height())
        self.canvas.pack()
        self.canvas.create_image(0, 0, image = img, anchor = tkinter.NW)

        #img.show()
        self.window.update_idletasks()

        print("Finish update\n")

现在，调用update（）的代码只有一部分在这里：

        print('Sending Email ...')
        with smtplib.SMTP_SSL("smtp.gmail.com", 465, context=context) as server:
            server.login(sender_email, password)
            server.sendmail(sender_email, receiver_email, text)

        print(' Email Sent')
        # In[26]:

        self.update()

画布将立即显示经过处理的图像（如瞬间），然后图像消失，后面留下空白画布。带有已处理图像的电子邮件已成功发送。

我尝试了各种其他方式来从我可以收集的所有在线帮助中更新画布，但无济于事。

Tkinter显示图像，然后立即刷新并显示空白画布

0 个答案: