Question

我有一个多页面GUI并创建了一个后台函数“def data_scan”，它收集新数据（它是机器人上的距离传感器）并更新一些全局变量。我不确定处理页面中标签更新的最佳方法。我正在data_scan中尝试在页面中设置标签txt。但是错误是找不到page1.label等等。

问题：我不确定Page（x）是否应该例行调用变量数据，或者data_scan函数是否应该设置标签txt。

这是一个显示示例 Plot GUI Main GUI

当前代码

import Tkinter as tk

import time
import thread

L_RAW = 0.1

def data_scan ():
   global Page1
   while 1:
      L_RAW = 23.2  #just a static value at this point
      Page1.label5['text'] = L_RAW


class Page(tk.Frame):
    def __init__(self, *args, **kwargs):
        tk.Frame.__init__(self, *args, **kwargs)

class Page1(Page):  #Status Screen
  def __init__(self, *args, **kwargs):
        self.root = root

        self.label5 = tk.Label(self, text = "XX cm")
        self.label5.place(x=265, y=255)



class MainApplication(tk.Frame): # Function to Build the Screen Classes
    def __init__(self, parent, *args, **kwargs):
        tk.Frame.__init__(self, parent, *args, **kwargs)
        self.root = root
        p1 = Page1(self)

        buttonframe = tk.Frame(self,background='#444444')
        buttonframe.pack(side="top", fill="x", expand=False)
        container = tk.Frame(self,background="#888888",)
        container.pack(side="top", fill="both", expand=True)

        p1.place(in_=container, x=0, y=0, relwidth=1, relheight=1)


        b1 = tk.Button(buttonframe, text=" Status ", command=lambda:p1.lift())
        b1.pack(side="left", padx=5, pady=4)

        thread.start_new_thread(data_scan,())


if __name__ == "__main__":
    root = tk.Tk()
    main = MainApplication(root)
    main.pack(side="top", fill="both", expand=True)
    root.wm_geometry("480x320")
    root.mainloop()

TKinter多页面GUI从后台任务更新标签

0 个答案: