Question

我正在使用一个简单的文字处理程序，但每次单击文件菜单中的选项时，选项“灰显”并且无法再单击。我已经寻找答案为什么，但我似乎无法在其他任何地方找到它。我正在使用macOS 10.12.6和Python 3.6.3，我的保存功能似乎忽略了'if prevSaved == True'并跳过'else：'（参见hastags＃中的代码）这是我的代码：

from tkinter import *
from tkinter.filedialog import *
import time

prevSaved = False
K = "Untitled"

def saveAs():
    text = textInput.get(1.0,END)
    filename = asksaveasfilename(title = "Choose where to save your file")
    file = open(str(filename) + ".txt" , "w+")
    file.write(text)
    file.close()
    prevSaved = True
    K, ext = os.path.splitext(os.path.basename(filename))
    root.title("Python Word Processor - " + K)

#def save():
    #if prevSaved == True:
 #       text = textInput.get(1.0,END)
 #       file = open(str(filename) + ".txt" , "w")
 #       file.write(text)
 #       file.close()
 #   else:
 #       saveAs()

def opentxt():
    prevSaved = True
    filename = askopenfilename(title = "Choose the file to open", filetypes = (("txt files","*.txt"),("all files","*.*")))
    file = open(str(filename), "r")
    disptext = file.read()
    file.close()
    textInput.delete(1.0, END)
    textInput.insert(END, disptext)
    K, ext = os.path.splitext(os.path.basename(filename))
    root.title("Python Word Processor - " + K)

root = Tk()                 #Creates the GUI called root            
root.resizable(False,False) #Makes the window non resizable
root.geometry('720x800')  #Makes the window 1280x720
root.title("Python Word Processor - " + K)
root.iconbitmap('icon.ico')
#Widgets - everything needs to have .pack() for it to show up, entries also need
#to have the pack.() on the line below o retrieve the information stored inside
#tkinter releif options - FLAT,RAISED,SUNKEN,GROOVE,RIDGE

f1 = Frame(root, width=720, height=50)
f1.pack(side=TOP)
f1.pack_propagate(0) #doesnt let its children control its size

mainmenu=Menu(root)
filemenu=Menu(mainmenu)
filemenu.add_command(label="Save As", command = saveAs)
filemenu.add_command(label="Save")#, command = save)
filemenu.add_command(label="Open", command = opentxt)
mainmenu.add_cascade(label="File", menu=filemenu)

textInput = Text(root, width = 340, height = 770, font='bold')
textInput.

root.config(menu=mainmenu)
root.mainloop()
#widgets
#wID = Widget(root, widget_details)

点击后，tkinter菜单按钮变灰了

0 个答案: