Question

我正在尝试使用Tkinter并排显示两个BMP图像。打开第二个图像后，第一个图像应将其自身重新定位到左侧，第二个图像将自身重新定位到右侧。当我尝试这样做时，另一个图像丢失或被替换。我该怎么做呢？另外，我的屏幕显示器是1920 x 1080，因此图像大小调整可能会有所不同。

这是我的代码：

import tkinter as tk
from tkinter import *
from tkinter import filedialog
from PIL import Image, ImageTk
import os

class Window(Frame):
    def __init__(self, master=None):
        Frame.__init__(self, master)

        self.pos = []
        self.master.title("BMP Image GUI")
        self.pack(fill=BOTH, expand=1)

        menu = Menu(self.master)
        self.master.config(menu=menu)

        # File Bar
        file = Menu(menu)
        file.add_command(label="Open Image 1", command=self.openImage1)
        file.add_command(label="Open Image 2", command=self.openImage2)
        menu.add_cascade(label="File", menu=file)

        self.canvas = tk.Canvas(self)
        self.canvas.pack(fill=tk.BOTH, expand=True)
        self.image = None  
        self.image2 = None  

    #Image 1
    def openImage1(self):
        filename = filedialog.askopenfilename(initialdir=os.getcwd(),title="Select BMP File",
                                              filetypes=[("BMP Files","*.bmp")])
        if not filename:
            return 
        load = Image.open(filename)
        load = load.resize((960, 720), Image.ANTIALIAS)

        if self.image is None: 
            w, h = load.size
            width, height = root.winfo_screenmmwidth(), root.winfo_screenheight()
            self.render = ImageTk.PhotoImage(load)  
            self.image = self.canvas.create_image((w / 2, h / 2), image=self.render)
            root.geometry("%dx%d" % (w, h))
        else:
            w, h = load.size
            width, height = root.winfo_screenmmwidth(), root.winfo_screenheight()
            root.geometry("%dx%d" % (width, height))
            self.canvas.move(self.image, 960, 0)
            self.render = ImageTk.PhotoImage(load) 
            self.image2 = self.canvas.create_image((w / 2, h / 2), image=self.render)

    # Image 2
    def openImage2(self):
        filename = filedialog.askopenfilename(initialdir=os.getcwd(), title="Select BMP File",
                                              filetypes=[("BMP Files", "*.bmp")])
        if not filename:
            return 
        load = Image.open(filename)
        load = load.resize((960, 720), Image.ANTIALIAS)

        if self.image is None:  
            w, h = load.size
            self.render = ImageTk.PhotoImage(load)  
            self.image = self.canvas.create_image((w / 2, h / 2), image=self.render)
            root.geometry("%dx%d" % (w, h))
        else:
            w, h = load.size
            width, height = root.winfo_screenmmwidth(), root.winfo_screenheight()
            root.geometry("%dx%d" % (width, height))
            self.render = ImageTk.PhotoImage(load)  
            self.image2 = self.canvas.create_image((w / 2, h / 2), image=self.render)
            self.canvas.move(self.image2, 960, 0)

root = tk.Tk()
root.geometry("%dx%d" % (300, 300))
root.title("BMP Image GUI")
app = Window(root)
app.pack(fill=tk.BOTH, expand=1)
root.mainloop()

Answer 1

您正在使用＆＃34; self.render＆＃34;对于两个图像对象。所以当你制作一个时，另一个会收集垃圾。使用唯一的名称。

self.render1 = ImageTk.PhotoImage(load) 
self.image1 = self.canvas.create_image((w / 2, h / 2), image=self.render1)

Answer 2

想出来了！只需在我的第二个else语句中创建一个新的render。标记为render2

import tkinter as tk
from tkinter import *
from tkinter import filedialog
from PIL import Image, ImageTk
import os

class Window(Frame):
    def __init__(self, master=None):
        Frame.__init__(self, master)

        self.master = master
        self.pos = []
        self.master.title("BMP Image GUI")
        self.pack(fill=BOTH, expand=1)

        menu = Menu(self.master)
        self.master.config(menu=menu)

        # File Bar
        file = Menu(menu)
        file.add_command(label="Open Image 1", command=self.openImage1)
        file.add_command(label="Open Image 2", command=self.openImage2)
        menu.add_cascade(label="File", menu=file)

        self.canvas = tk.Canvas(self)
        self.canvas.pack(fill=tk.BOTH, expand=True)
        self.image = None
        self.image2 = None

    def openImage1(self):
        filename = filedialog.askopenfilename(initialdir=os.getcwd(),title="Select BMP File",
                                              filetypes=[("BMP Files","*.bmp")])
        if not filename:
            return
        load = Image.open(filename)
        load = load.resize((960, 720), Image.ANTIALIAS)

        if self.image is None:
            w, h = load.size
            width, height = root.winfo_screenmmwidth(), root.winfo_screenheight()
            self.render = ImageTk.PhotoImage(load)
            self.image = self.canvas.create_image((w / 2, h / 2), image=self.render)
            root.geometry("%dx%d" % (w, h))
        else:
            w, h = load.size
            width, height = root.winfo_screenmmwidth(), root.winfo_screenheight()
            root.geometry("%dx%d" % (width, height))
            self.canvas.move(self.image, 960, 0)
            self.render2 = ImageTk.PhotoImage(load)
            self.image2 = self.canvas.create_image((w / 2, h / 2), image=self.render2)

    def openImage2(self):
        filename = filedialog.askopenfilename(initialdir=os.getcwd(), title="Select BMP File",
                                              filetypes=[("BMP Files", "*.bmp")])
        if not filename:
            return
        load = Image.open(filename)
        load = load.resize((960, 720), Image.ANTIALIAS)

        if self.image is None:
            w, h = load.size
            self.render = ImageTk.PhotoImage(load)
            self.image = self.canvas.create_image((w / 2, h / 2), image=self.render)
            root.geometry("%dx%d" % (w, h))
        else:
            w, h = load.size
            width, height = root.winfo_screenmmwidth(), root.winfo_screenheight()
            root.geometry("%dx%d" % (width, height))
            self.render2 = ImageTk.PhotoImage(load)
            self.image2 = self.canvas.create_image((w / 2, h / 2), image=self.render2)
            self.canvas.move(self.image2, 960, 0)

root = tk.Tk()
root.geometry("%dx%d" % (300, 300))
root.title("BMP Image GUI")
app = Window(root)
app.pack(fill=tk.BOTH, expand=1)
root.mainloop()

Tkinter，并排显示两个图像

2 个答案: