如何在 tkinter 中使用 Canvas 在不同的帧上获取两个图像？

Question

在下面的代码中，我尝试使用 Canvas 将两个图像放在两个单独的窗口框架上

PANEL_HEIGHT = 440
PANEL_WIDTH = 304
BKG_IMG = "./backgrounds/Wireframe- welcome screen – 1.png"
MANAGE_ACC_BKG_IMG = "./backgrounds/Wireframe- welcome screen – 1.png"

class window1:

    def __init__(self):
        self.panel = Tk()
        self.panel.geometry(f"{PANEL_WIDTH}x{PANEL_HEIGHT}")


        self.canvas = Canvas(self.panel,width=2*PANEL_WIDTH, height=2*PANEL_HEIGHT)
        canvas = self.canvas

        img = PhotoImage(file=BKG_IMG)
        canvas.create_image(PANEL_WIDTH,PANEL_HEIGHT,image=img)
        canvas.place(x=-(PANEL_WIDTH/2),y=-(PANEL_HEIGHT/2))

class window2:

    def __init__(self):
        self.panel = Tk()
        self.panel.geometry(f"{PANEL_WIDTH}x{PANEL_HEIGHT}")


        self.canvas = Canvas(self.panel, width=2 * PANEL_WIDTH, height=2 * PANEL_HEIGHT)
        canvas = self.canvas
        img = PhotoImage(file=MANAGE_ACC_BKG_IMG)
        canvas.create_image(PANEL_WIDTH, PANEL_HEIGHT, image=img)
        canvas.place(x=-(PANEL_WIDTH / 2), y=-(PANEL_HEIGHT / 2))

window1()
window2()

在调用这两个类时，我收到“图像 'pyimage2' 不存在”错误

两个文件的绝对路径是

D:\pyAut\pythonBootCamp\backgrounds\manage_acc_ui_bkg.png D:\pyAut\pythonBootCamp\main.py

谁能告诉我如何完成任务？？？？

Answer 1

您已经创建了两次 Tk()：self.panel = Tk() 避免这种情况。 将self.panel = Tk()移到外面分享：panel = Tk()。

请试一试：

from tkinter import *  

PANEL_HEIGHT = 440
PANEL_WIDTH = 304
BKG_IMG = "./backgrounds/Wireframe- welcome screen – 1.png"
MANAGE_ACC_BKG_IMG = "./backgrounds/Wireframe- welcome screen – 1.png"

panel = Tk()
panel.geometry(f"{PANEL_WIDTH}x{PANEL_HEIGHT}")

class window1:

    def __init__(self):
        self.canvas = Canvas(panel,width=2*PANEL_WIDTH, height=2*PANEL_HEIGHT)
        canvas = self.canvas

        img = PhotoImage(file=BKG_IMG)
        canvas.create_image(PANEL_WIDTH,PANEL_HEIGHT,image=img)
        canvas.place(x=-(PANEL_WIDTH/2),y=-(PANEL_HEIGHT/2))

class window2:

    def __init__(self):
        self.canvas = Canvas(panel, width=2 * PANEL_WIDTH, height=2 * PANEL_HEIGHT)
        canvas = self.canvas
        img = PhotoImage(file=MANAGE_ACC_BKG_IMG)
        canvas.create_image(PANEL_WIDTH, PANEL_HEIGHT, image=img)
        canvas.place(x=-(PANEL_WIDTH / 2), y=-(PANEL_HEIGHT / 2))

window1()
window2()

Answer 2

希望您对所提供的信息感到满意

import tkinter as tk
from PIL import ImageTk, Image

PANEL_HEIGHT = 440
PANEL_WIDTH = 304

main = tk.Tk()

BKG_IMG = "./backgrounds/Wireframe- welcome screen – 1.png"
MANAGE_ACC_BKG_IMG = "./backgrounds/Wireframe- welcome screen – 1.png"


class window1:
    window = tk.Toplevel(main)
    window.geometry(f"{PANEL_WIDTH}x{PANEL_HEIGHT}")
    window.title("Window 1")
    img = ImageTk.PhotoImage(Image.open(BKG_IMG))
    canvas = tk.Canvas(window, width=PANEL_WIDTH, height=PANEL_HEIGHT, background="white")
    canvas.pack()
    canvas.create_image(PANEL_WIDTH, PANEL_HEIGHT, image=img)


class window2:
    main.title("Window 2")
    main.geometry(f"{PANEL_WIDTH}x{PANEL_HEIGHT}")

    img = ImageTk.PhotoImage(Image.open(MANAGE_ACC_BKG_IMG))
    canvas = tk.Canvas(main, width=PANEL_WIDTH, height=PANEL_HEIGHT, background="white")
    canvas.pack()
    canvas.create_image(PANEL_WIDTH, PANEL_HEIGHT, image=img)


window1()
window2()

main.mainloop()

Answer 3

首先tkinter的PhotoImage不支持.png格式，它只支持gif,ppm/pgm格式。
如果要使用.png 格式，则需要使用 PIL 库。
然后我认为在您的 window1 和 window2 实例关闭后，您的图像完全被浪费了。
因此，您需要在 img 之前添加self。
另外，您拨打Tk() 两次，这是一个问题。
最后，您在两个类中都使用了相似的名称，这不好。
因此，在完成所有编辑后，您的代码将如下所示。

from PIL import ImageTk
PANEL_HEIGHT = 440
PANEL_WIDTH = 304
BKG_IMG = "./backgrounds/Wireframe- welcome screen – 1.png"
MANAGE_ACC_BKG_IMG = "./backgrounds/Wireframe- welcome screen – 1.png"

panel = Tk()
panel.geometry(f"{PANEL_WIDTH}x{PANEL_HEIGHT}")

class window1:

    def __init__(self):
        self.canvas = Canvas(panel,width=2*PANEL_WIDTH, height=2*PANEL_HEIGHT)
        canvas = self.canvas

        self.img = ImageTk.PhotoImage(file=BKG_IMG)
        canvas.create_image(PANEL_WIDTH,PANEL_HEIGHT,image=self.img)
        canvas.place(x=-(PANEL_WIDTH/2),y=-(PANEL_HEIGHT/2))

class window2:

    def __init__(self):
        self.canvas1 = Canvas(panel, width=2 * PANEL_WIDTH, height=2 * PANEL_HEIGHT)
        canvas1 = self.canvas1
        self.img1 = ImageTk.PhotoImage(file=MANAGE_ACC_BKG_IMG)
        canvas1.create_image(PANEL_WIDTH, PANEL_HEIGHT, image=self.img1)
        canvas1.place(x=-(PANEL_WIDTH / 2), y=-(PANEL_HEIGHT / 2))

window1()
window2()
panel.mainloop

让我知道它是否有效。