圖片/標簽未在PIL / Python 3.6中顯示

Question

我正在嘗試將圖像插入標簽小部件。 如果我使用show（）函數，它將成功加載我的圖像。 由於某種原因，圖像將不會顯示在GUI中。 我一直試圖將其顯示在應用程序的整個背景中，但是現在我可以只顯示一幀，而我想出如何將其顯示到GUI的其余部分。 以下是輸出和代碼的屏幕截圖

import sys
from tkinter import *
from PIL import Image,ImageTk

class Game_Client(object):

def __init__(self):
    self.tk = Tk()
    self.tk.title("Untitled Game")
    self.tk.wm_state('zoomed')

    # Create the frame holders
    top_left = self.create_topleft()
    top_mid = self.create_topmid()
    top_right = self.create_topright()
    btm_left = self.create_btmleft()
    btm_mid = self.create_btmmid()
    btm_right = self.create_btmright()
    border_left = self.create_borderL()
    border_right = self.create_borderR()
    border_top = self.create_borderT()
    border_bottom = self.create_borderB()

    self.tk.grid_rowconfigure(0, weight=1)
    self.tk.grid_rowconfigure(1, weight=4)
    self.tk.grid_rowconfigure(2, weight=4)
    self.tk.grid_rowconfigure(3, weight=1)
    self.tk.grid_columnconfigure(0, weight=1)
    self.tk.grid_columnconfigure(1, weight=4)
    self.tk.grid_columnconfigure(2, weight=4)
    self.tk.grid_columnconfigure(3, weight=4)
    self.tk.grid_columnconfigure(4, weight=1)

    background_image = Image.open('client-bg.jpg')
    #background_image.show()
    background_image = ImageTk.PhotoImage(background_image)
    background_label = Label(top_mid, image=background_image)
    #background_label.grid(row=0, column=0, rowspan=4, columnspan=5)
    background_label.place(x=0,y=0,relheight=1, relwidth=1)
    background_label.lift(aboveThis=None)

    # Position the frames and set rescale weight
    top_left.grid(row=0, column=0, sticky="nsew")
    top_mid.grid(row=0, column=1, sticky="nsew")
    top_right.grid(row=0, column=2, sticky="nsew")
    btm_left.grid(row=1, column=0, sticky="nsew")
    btm_mid.grid(row=1, column=1, sticky="nsew")
    btm_right.grid(row=1, column=2, sticky="nsew")
    border_left.grid(row = 0, column = 0, rowspan = 4, sticky="ns")
    border_right.grid(row=0, column=4, rowspan=4, sticky="ns")
    border_top.grid(row=0, column=0, columnspan=5, sticky="ew")
    border_bottom.grid(row=4, column=0, columnspan=5, sticky="ew")

    txtOutFrame = Frame(btm_mid, bg="purple", height=625, width=560)
    txtOutFrame.pack(side=TOP, fill=BOTH)
    txtOutFrame.pack_propagate(False)
    txtOut = Text(txtOutFrame)
    txtOut.config(bg='black', fg='green', relief="groove")
    txtOut.pack(expand=True, fill=BOTH)

    txtChatFrame = Frame(btm_mid, bg="pink", height=150, width=560)
    txtChatFrame.pack(side=BOTTOM, fill=X)
    txtChatFrame.pack_propagate(False)
    txtChat = Text(txtChatFrame)
    txtChat.config(bg='white', fg = 'black', relief="groove")
    txtChat.pack(expand=True, fill=X)

    self.state = False
    self.tk.bind("<F11>", self.toggle_fullscreen)
    self.tk.bind("<Escape>", self.end_fullscreen)

def toggle_fullscreen(self, event=None):
    self.state = not self.state  # Just toggling the boolean
    self.tk.attributes("-fullscreen", self.state)
    return "break"

def end_fullscreen(self, event=None):
    self.state = False
    self.tk.attributes("-fullscreen", False)
    return "break"

def create_topleft(layout):
    f = Frame(layout.tk, bg='red', width=430, height=295)
    return f

def create_topmid(layout):
    f = Frame(layout.tk, bg='orange', width=1050, height=295)
    return f

def create_topright(layout):
    f = Frame(layout.tk, bg='purple', width=430, height=295)
    return f

def create_btmleft(layout):
    f = Frame(layout.tk, bg='blue', width=430, height=775)
    return f

def create_btmmid(layout):
    f = Frame(layout.tk, bg='yellow', width=1050, height=775)
    return f

def create_btmright(layout):
    f = Frame(layout.tk, bg='green', width=430, height=775)
    return f

def create_borderL(layout):
    f = Frame(layout.tk, bg='black', width=5, height=1080)
    return f

def create_borderR(layout):
    f = Frame(layout.tk, bg='black', width=5, height=1080)
    return f

def create_borderT(layout):
    f = Frame(layout.tk, bg='black', width=1920, height=5)
    return f

def create_borderB(layout):
    f = Frame(layout.tk, bg='black', width=1920, height=5)
    return f

if __name__ == '__main__':
    w = Game_Client()
    w.tk.mainloop()

Answer 1

這是一個非常普遍的問題。 您需要保留對PhotoImage對象的引用。

background_image = Image.open('client-bg.jpg')
background_image = ImageTk.PhotoImage(background_image)
background_label = Label(top_mid, image=background_image)
background_label.image_ref = background_image # keep the reference!

否則，圖像將被垃圾收集。