[英]Passing IntVar() values from one window to another in Tkinter
我想使用控制器將存儲在IntVar下的值從一個窗口傳遞到另一個窗口。 但是問題在於該值不會自我更新。
class DSS(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
container = tk.Frame(self)
container.pack(side='top', fill='both', expand=True)
container.grid_rowconfigure(0, weight=1)
container.grid_columnconfigure(0, weight=1)
self.frames = {}
for F in [App, Optimize]:
frame = F(container, self)
self.frames[F] = frame
frame.grid(row=0, column=0, sticky='nsew')
self.show_frame(App)
def show_frame(self, cont, extras):
print "show frame"
frame = self.frames[cont]
extras.update(extras)
print str(cont)
frame.tkraise()
def return_frame(self, cont):
return self.frames[cont]
這是控制器類。 由於其余的代碼太長,我正在發布負責傳輸的行。
radio_btn = tk.Radiobutton(self.kernel_frame, text=txt, variable=self.v, command=lambda: self.import_kernel(), value=val)
radio_btn.grid(row=row_no, column=1, sticky='w')
這是我發送v
值的地方
這是我嘗試訪問的地方。
class Optimize(tk.Frame):
def __init__(self, master, controller, extras):
tk.Frame.__init__(self, master)
container = tk.Frame(self)
container.pack()
app = controller.return_frame(App)
# self.v = app.v
tk.Label(container, text=app.v.get()).pack()
tk.Button(container, text="Back", command=lambda: controller.show_frame(App, {})).pack()
您可以使用getvar方法,例如:
import Tkinter as tk
root = tk.Tk()
# var tkinter are globals in tkinter and are accessible everywhere
var = tk.IntVar()
var.set(123456789)
my_label = tk.Label(root)
my_label.pack()
# Now you can access to your var with its name and getvar method
# _name return the identifier in tkinter, PY_VAR0, PY_VAR1, etc.
my_label['text'] = my_label.getvar(var._name)
# But you can specify your own name for your vars tkinter
my_var = tk.StringVar(my_label, '', 'my_var' ) # (master, value, name)
my_var.set('blabla')
my_blabla_label = tk.Label(root, text=root.getvar('my_var')).pack()
root.mainloop()
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