我正在使用 Python 的 tkinter
库来创建一个小型 GUI。该应用程序的代码如下:
import tkinter as tk
from tkinter import ttk
APP_TITLE = "HiDE"
class Application(tk.Frame):
"""This class establishes an entity for the application"""
#The constructor of this class
def __init__(self, master=None):
tk.Frame.__init__(self,master)
self.grid()
def setupWidgets(self):
self.message = tk.Label(self,text='Login')
self.quitButton = tk.Button(self,text='Quit',command=self.quit)
self.logButton = tk.Button(self,text='Login',command=self.quit)
self.master.title(APP_TITLE)
self.master.minsize("300","300")
self.master.maxsize("300","300")
self.message.grid()
self.logButton.grid()
self.quitButton.grid()
#Setting up the application
app = Application()
img = tk.PhotoImage(file='icon.png')
#getting screen parameters
w = h = 300#max size of the window
ws = app.master.winfo_screenwidth() #This value is the width of the screen
hs = app.master.winfo_screenheight() #This is the height of the screen
# calculate position x, y
x = (ws/2) - (w/2)
y = (hs/2) - (h/2)
#This is responsible for setting the dimensions of the screen and where it is placed
app.master.geometry('%dx%d+%d+%d' % (w, h, x, y))
app.master.tk.call('wm', 'iconphoto', app.master._w, img)
app.master.i_con = tk.Label(app.master, image=img)
app.master.i_con.grid()
app.setupWidgets() #<-- This is the function call
app.mainloop()
设置图像后调用setupWidgets
函数,但输出为:
最佳答案
当您将标签与图像网格化时,您已经在类中的框架上调用了 grid 。此类是放置其他小部件的位置,因此它放置在带有图像的标签上方。
而不是
app.master.i_con = tk.Label(app.master, image=img)
尝试
app.master.i_con = tk.Label(app, image=img)
将带有图像的标签与其他小部件一起放入框架中。
顺便说一句,在不指定行和列的情况下调用网格实际上没有意义。
关于python - 为什么后来声明的小部件首先出现?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/28437490/