Python 在多个tkinter帧对象之间传递数据
根据使用tkinter作为GUI的教程,我在Python3.6中构建了一个多窗口应用程序。窗口是容器中的框架对象。现在,我试图找出如何将信息从一个窗口传递到另一个窗口。 到目前为止,我找到了这个解决方案: 文件main.py:Python 在多个tkinter帧对象之间传递数据,python,tkinter,Python,Tkinter,根据使用tkinter作为GUI的教程,我在Python3.6中构建了一个多窗口应用程序。窗口是容器中的框架对象。现在,我试图找出如何将信息从一个窗口传递到另一个窗口。 到目前为止,我找到了这个解决方案: 文件main.py: import tkinter as tk import SecondPage class TestApp(tk.Tk): def __init__(self, *args, **kwargs): tk.Tk.__init__(self, *ar
import tkinter as tk
import SecondPage
class TestApp(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
container = tk.Frame(self)
# Initialize Window
container.pack(side="top", fill="both", expand=True)
container.grid_rowconfigure(0, weight=1)
container.grid_columnconfigure(0, weight=1)
self.frames = {}
pages = (StartPage, SecondPage.SecondPage)
# Load all pages
for F in pages:
frame = F(container, self, pages)
self.frames[F] = frame
frame.grid(row=0, column=0, sticky="nsew")
self.show_frame(StartPage)
self.show_frame(StartPage)
# shows the desired frame
def show_frame(self, cont):
frame = self.frames[cont]
frame.tkraise()
return True
# passes text to the window StartPage
def pass_on_text(self, text):
self.frames[StartPage].get_text(text)
# passes text to the window SecondPage
def pass_on_text2(self, text):
self.frames[SecondPage.SecondPage].get_text(text)
class StartPage(tk.Frame):
def __init__(self, parent, controller, pages):
tk.Frame.__init__(self, parent)
# define GUI elements
self.label = tk.Label(self, text="test")
button = tk.Button(self, text="2nd Page", command=lambda: controller.show_frame(pages[1]))
but_change2nd = tk.Button(self, text="Change Label on SecondPage", command=lambda: send_text("Hello, too!"))
# place GUI elements
self.label.grid(row=0, column=0)
button.grid(row=1, column=0)
but_change2nd.grid(row=2, column=0)
# send text to SecondPage
def send_text(text):
controller.pass_on_text2(text)
# get information and change the displayed text
def get_text(self, text):
self.label.config(text=text)
app = TestApp()
app.mainloop()
文件SecondPage.py:
import tkinter as tk
class SecondPage(tk.Frame):
def __init__(self, parent, controller, pages):
tk.Frame.__init__(self, parent)
self.controller = controller
# define GUI elements
self.label = tk.Label(self, text="test2")
button = tk.Button(self, text="1st Page", command=lambda: controller.show_frame(pages[0]))
but_change1st = tk.Button(self, text="Change Label on Startpage", command=lambda: send_text("Hello"))
# place GUI elements
self.label.grid(row=0, column=0)
button.grid(row=1, column=0)
but_change1st.grid(row=2, column=0)
# send text to StartPage
def send_text(text):
controller.pass_on_text(text)
# get information and change the displayed text
def get_text(self, text):
self.label.config(text=text)
这种方法是有效的,但我想知道,是否有一种更简单的方法可以在第二页上设置一个按钮来更改StartPage上的标签,反之亦然。在发布问题后几天几秒钟,我突然有了一个似乎有效的想法: 我将页面变量更改为实例变量:
pages = (StartPage, SecondPage.SecondPage)
进入
然后我将页面传递到初始化的每一帧:
frame = F(container, self, self.pages)
并将pages变量添加到每个帧的_init_uuuuu:
class StartPage(tk.Frame):
def __init__(self, parent, controller, pages):
现在,我将发送文本功能更改为:
def send_text(text):
controller.frames[pages[1]].label.config(text=text)
整个main.py文件现在如下所示:
import tkinter as tk
import SecondPage
class TestApp(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
container = tk.Frame(self)
# Initialize Window
container.pack(side="top", fill="both", expand=True)
container.grid_rowconfigure(0, weight=1)
container.grid_columnconfigure(0, weight=1)
self.frames = {}
self.pages = (StartPage, SecondPage.SecondPage)
#self.pages = pages
# Load all pages
for F in self.pages:
frame = F(container, self, self.pages)
self.frames[F] = frame
frame.grid(row=0, column=0, sticky="nsew")
self.show_frame(StartPage)
self.show_frame(StartPage)
# shows the desired frame
def show_frame(self, cont):
frame = self.frames[cont]
frame.tkraise()
return True
# passes text to the window StartPage
def pass_on_text(self, text):
self.frames[self.pages[0]].get_text(text)
# passes text to the window SecondPage
def pass_on_text2(self, text):
self.frames[self.pages[1]].get_text(text)
class StartPage(tk.Frame):
def __init__(self, parent, controller, pages):
tk.Frame.__init__(self, parent)
self.controller = controller
self.pages = pages
# define GUI elements
self.label = tk.Label(self, text="test")
button = tk.Button(self, text="2nd Page", command=lambda: controller.show_frame(pages[1]))
but_change2nd = tk.Button(self, text="Change Label on SecondPage", command=lambda: send_text("Hello, too!"))
# place GUI elements
self.label.grid(row=0, column=0)
button.grid(row=1, column=0)
but_change2nd.grid(row=2, column=0)
# send text to SecondPage
def send_text(text):
controller.frames[pages[1]].label.config(text=text)
# get information and change the displayed text
def get_text(self, text):
self.label.config(text=text)
app = TestApp()
app.mainloop()
您复制的代码中控制器的全部要点是,您不必让每个页面都知道所有其他页面。
import tkinter as tk
import SecondPage
class TestApp(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
container = tk.Frame(self)
# Initialize Window
container.pack(side="top", fill="both", expand=True)
container.grid_rowconfigure(0, weight=1)
container.grid_columnconfigure(0, weight=1)
self.frames = {}
self.pages = (StartPage, SecondPage.SecondPage)
#self.pages = pages
# Load all pages
for F in self.pages:
frame = F(container, self, self.pages)
self.frames[F] = frame
frame.grid(row=0, column=0, sticky="nsew")
self.show_frame(StartPage)
self.show_frame(StartPage)
# shows the desired frame
def show_frame(self, cont):
frame = self.frames[cont]
frame.tkraise()
return True
# passes text to the window StartPage
def pass_on_text(self, text):
self.frames[self.pages[0]].get_text(text)
# passes text to the window SecondPage
def pass_on_text2(self, text):
self.frames[self.pages[1]].get_text(text)
class StartPage(tk.Frame):
def __init__(self, parent, controller, pages):
tk.Frame.__init__(self, parent)
self.controller = controller
self.pages = pages
# define GUI elements
self.label = tk.Label(self, text="test")
button = tk.Button(self, text="2nd Page", command=lambda: controller.show_frame(pages[1]))
but_change2nd = tk.Button(self, text="Change Label on SecondPage", command=lambda: send_text("Hello, too!"))
# place GUI elements
self.label.grid(row=0, column=0)
button.grid(row=1, column=0)
but_change2nd.grid(row=2, column=0)
# send text to SecondPage
def send_text(text):
controller.frames[pages[1]].label.config(text=text)
# get information and change the displayed text
def get_text(self, text):
self.label.config(text=text)
app = TestApp()
app.mainloop()