如何更新 tkinter 中顶层 window 中的条目小部件条目?
How can I update entry widget entries in a toplevel window in tkinter?
我想做的是从根 window 打开一个顶层 window,其中我有一系列条目小部件,修改条目并关闭 window。我在其中一篇文章中找到了一段代码,并对其进行了修改以满足我的需要。该代码仅在我第一次打开顶层 window 时有效,但之后它会打开没有输入字段的顶层 window!我不明白发生了什么!有人可以帮忙吗?我对 python 很陌生。这是代码:
from tkinter import *
root = Tk()
entry_list = []
def openwindow():
window = Toplevel()
window.title("Data")
entry_list.clear()
for i in range(10):
entry_list.append(Entry(window))
entry_list[i].grid()
def update_entry_fields():
for i in entry_list:
i.delete(END)
i.insert(0, "")
print(float(entry_list[0].get()))
def closewindow():
window.withdraw()
savebtn = Button(window, text="Save & print", command = update_entry_fields)
closebtn = Button(window, text="Close", command=closewindow)
savebtn.grid()
closebtn.grid()
def printout():
print(float(entry_list[0].get()))
printbtn = Button(root, text="Test print", command = printout)
printbtn.grid()
openbutton = Button(root, text="open data sheet", command=openwindow)
openbutton.grid()
root.mainloop()
这是至少我一直在寻找的解决方案。
from tkinter import *
root = Tk()
entry_list = []
p = [5, 6, 7, 8, 9]
def openwindow():
window = Toplevel()
window.title("Data")
entry_list.clear()
for i in range(5):
v = DoubleVar()
entry_list.append(Entry(window, textvariable=v))
entry_list[i].grid()
v.set(p[i]) # set default entry values
def update_entry_fields():
for i in range(5):
p[i]=entry_list[i].get() # overwrite the entry
# test print from inside
print(p[i])
window.withdraw()
savebtn = Button(window, text="Save & close", command = update_entry_fields)
savebtn.grid()
window.mainloop()
# Test print from outside of function
def printout():
print(p[0])
printbtn = Button(root, text="Test print", command = printout)
printbtn.grid()
openbutton = Button(root, text="open data sheet", command=openwindow)
openbutton.grid()
#
root.mainloop()
我想做的是从根 window 打开一个顶层 window,其中我有一系列条目小部件,修改条目并关闭 window。我在其中一篇文章中找到了一段代码,并对其进行了修改以满足我的需要。该代码仅在我第一次打开顶层 window 时有效,但之后它会打开没有输入字段的顶层 window!我不明白发生了什么!有人可以帮忙吗?我对 python 很陌生。这是代码:
from tkinter import *
root = Tk()
entry_list = []
def openwindow():
window = Toplevel()
window.title("Data")
entry_list.clear()
for i in range(10):
entry_list.append(Entry(window))
entry_list[i].grid()
def update_entry_fields():
for i in entry_list:
i.delete(END)
i.insert(0, "")
print(float(entry_list[0].get()))
def closewindow():
window.withdraw()
savebtn = Button(window, text="Save & print", command = update_entry_fields)
closebtn = Button(window, text="Close", command=closewindow)
savebtn.grid()
closebtn.grid()
def printout():
print(float(entry_list[0].get()))
printbtn = Button(root, text="Test print", command = printout)
printbtn.grid()
openbutton = Button(root, text="open data sheet", command=openwindow)
openbutton.grid()
root.mainloop()
这是至少我一直在寻找的解决方案。
from tkinter import *
root = Tk()
entry_list = []
p = [5, 6, 7, 8, 9]
def openwindow():
window = Toplevel()
window.title("Data")
entry_list.clear()
for i in range(5):
v = DoubleVar()
entry_list.append(Entry(window, textvariable=v))
entry_list[i].grid()
v.set(p[i]) # set default entry values
def update_entry_fields():
for i in range(5):
p[i]=entry_list[i].get() # overwrite the entry
# test print from inside
print(p[i])
window.withdraw()
savebtn = Button(window, text="Save & close", command = update_entry_fields)
savebtn.grid()
window.mainloop()
# Test print from outside of function
def printout():
print(p[0])
printbtn = Button(root, text="Test print", command = printout)
printbtn.grid()
openbutton = Button(root, text="open data sheet", command=openwindow)
openbutton.grid()
#
root.mainloop()