Question

我正在使用tkinter开发图形界面。当我打开文件并发送它时，我想看到标签中的滚动指令（Commande）

更准确地说，我不知道如何将此说明print('Sending: ' + l)与此说明Label(Frame1, text="Commande", background='NavajoWhite2').pack(padx=165, pady=10)

相关联

感谢所有

from tkinter import *
from tkinter import filedialog
from tkinter import ttk, Text

#nom de la fenetre

moha = Tk()
moha.title('Emetteur G-code Universel')
moha.geometry("2500x2500")
moha['bg']= 'NavajoWhite2'

##################
##################
#le chemin de recherche #

def file(tk_event=None, *args, **kw):
    fiile = filedialog.askopenfilename(filetypes=[('txt files','.txt'),('all files','.*')])
    file_path.set(fiile)
    fichier = open(fiile, "r")
    print(fiile)

    content_bis = fichier.readlines()

    for line in content_bis:
            T.insert(END, line)

    fichier.close()

    # Créer les différentes Frame

    Outil = LabelFrame(moha, text="Outil")
    Outil.place(x=500)
    Outil['bg']= 'NavajoWhite2'
    label = Label(Outil, text='Fichier : ', background='NavajoWhite2')
    label.place(x=10, y=114)

    file_path = StringVar()

    entry = Entry(Outil, textvariable=file_path)
    entry.place(x=60, y=114)
    ################

   def moh():

      # Open grbl serial port
      s = serial.Serial('/dev/ttyS0',115200)

      # Open g-code file

      f = open(file_path.get(), "r");

      # Wake up grbl
      s.write("\r\n\r\n".encode('utf8'))
      time.sleep(2)   # Wait for grbl to initialize 
      s.flushInput()  # Flush startup text in serial input

      # Stream g-code to grbl
      for line in f:
          l = line.strip() # Strip all EOL characters for consistency
          print ('Sending: ' + l)
          s.write((l + '\n').encode("utf8")) # Send g-code block to grbl
          grbl_out = s.readline().decode("utf8") # Wait for grbl response with carriage return
          print (' : ' + grbl_out)

      # Wait here until grbl is finished to close serial port and file.
      raw_input("  Press <Enter> to exit and disable grbl.") 

      # Close file and serial port
      f.close()
      s.close()


    #Créer la barre de recherche 


   #################
  o = LabelFrame(moha, text="Fase des commandes")
  o.place(y=400)
  o['bg']= 'NavajoWhite2'
  Label(o, background='NavajoWhite2').pack(padx=670,pady=120)
  Frame1 = Frame(o, borderwidth=3, relief=GROOVE, background='NavajoWhite2')
  Frame1.place(x=0, y=5)
  Label(Frame1, text="Commande",background='NavajoWhite2').pack(padx=165, pady=10)
  #################
  b1= Button(Outil, text ="Commande", background='White').place(x=10, y=20)
  b2= Button(Outil, text ="Fichier", background='White').place(x=110, y=20)
  b3= Button(Outil, text ="Côntrole de la machine", 
  background='White').place(x=190, y=20)
  b4= Button(Outil, text ="Selectionner un fichier",background='White', 
 command=file).place(x=235, y=112)
  b5= Button(Outil, text ="Envoyer",background='White', command=moh).place(x=30, y=150)
  b6= Button(Outil, text ="Pause",background='White').place(x=110, y=150)
  b7= Button(Outil, text ="Annuler",background='White').place(x=180, y=150)
  Label(Outil, text="", background='NavajoWhite2').pack(padx=300, pady=150)
  ################
  ################
  S = Scrollbar(Outil, background='NavajoWhite2')
  T = Text(Outil, height=19, width=28)
  S.place(x=380, y=10)
  T.place(x=400, y=0)
  S.config(command=T.yview)
  T.config(yscrollcommand=S.set)

Answer 1

如Novel所提到的，为了正确存储对窗口小部件的引用，您应该将窗口小部件创建与窗口小部件对齐分开（另请参阅here）

其次，要在for循环中在GUI中显示标签文字实时，您需要在主窗口上调用.update()。

以下是显示其工作原理的Minimal, Complete, and Verifiable example：

import tkinter as tk
from time import sleep

def change_label():
    for i in range(5):
        label.config(text="iteration " + str(i))
        # Update the GUI in real time
        root.update()
        sleep(1)

root = tk.Tk()
# Create & align a label in 2 steps
label = tk.Label(root, text="hello") 
label.pack()

button = tk.Button(root, text="click me", command=change_label)
button.pack()

# Launch the GUI
root.mainloop()

tkinter接口需要帮助

1 个答案: