如何在tkinter中动态调整窗口大小以“自动调整”其内容?

时间:2018-10-29 20:55:29

标签: python python-3.x tkinter

我目前正在使用tkinter在GUI上工作,它允许用户在不同框架之间导航。我的代码结构基于this user response

我现在的问题是在更改框架时自动将tkinter的窗口调整为其内容。我希望窗口的边框适合红色箭头之后的小部件,如herehere(下面的示例代码的输出),以便每个窗口中都没有这样的“空白”框架。

代码的工作方式为方法show_frame允许在两个定义的帧之间进行更改。

from tkinter import *


class WindowController(Tk):

    def __init__(self, *args, **kwargs):

        Tk.__init__(self, *args, **kwargs)

        container = Frame(root)
        container.grid()

        self.frames = {}

        for F in (FirstWindow, SecondWindow):
            frame = F(parent=container, controller=self)

            self.frames[F] = frame

            frame.grid(row=0, column=0, sticky="nsew")

        self.show_frame(FirstWindow)

        self.destroy()

    def show_frame(self, cont):
        frame = self.frames[cont]
        frame.tkraise()


class FirstWindow(Frame):

    def __init__(self, parent, controller):

        self.controller = controller
        self.parent = parent

        Frame.__init__(self, parent)

        # Widgets:

        # "Do Nothing" Button
        self.Title0 = Button(self, text='Do nothing')
        self.Title0.grid(row=0, column=0)

        # "Do Nothing" Button
        self.Title1 = Button(self, text='Do Nothing')
        self.Title1.grid(row=1, column=0)

        # Change Frame Button
        self.Title2 = Button(self, text='To Second Window', command=lambda: self.controller.show_frame(SecondWindow))
        self.Title2.grid(row=2, column=0)


class SecondWindow(Frame):

    def __init__(self, parent, controller):

        self.controller = controller
        self.parent = parent

        Frame.__init__(self, parent)

        # Widgets:

        # "Do Nothing" Button
        self.Title0 = Button(self, text='Do nothing')
        self.Title0.grid(row=0, column=0)

        # "Do Nothing" Button
        self.Title1 = Button(self, text='Do Nothing')
        self.Title1.grid(row=0, column=1)

        # Change Frame Button
        self.Title2 = Button(self, text='To First Window', command=lambda: self.controller.show_frame(FirstWindow))
        self.Title2.grid(row=0, column=2)



if __name__ == "__main__":
    root = Tk()
    root.resizable(width=False, height=False)
    app = WindowController()
    app.mainloop()

我的问题似乎与here中的问题类似,但没有解决。

这是我的第一个问题,非常感谢批评。

1 个答案:

答案 0 :(得分:1)

答案是问题Tkinter Frame Resize:由于两个框架都被网格化,因此窗口将扩展为包含两个框架。

要使窗口更改大小,一次只需要网格化一帧即可。

要从窗口中删除框架并仍然记住其属性,请使用:

frame.grid_remove()

要再次显示框架,请使用:

frame.grid()  # Will remember grid settings

此代码有效,但您可能可以改善其美观性:

class WindowController(Tk):
    def __init__(self, *args, **kwargs):
        Tk.__init__(self, *args, **kwargs)
        container = Frame(root)
        container.grid()
        self.frames = {}

        for F in (FirstWindow, SecondWindow):
            frame = F(parent=container, controller=self)
            self.frames[F] = frame
            frame.grid(row=0, column=0, sticky="nsew")
            frame.grid_remove()     # Remove all frames

        self.show_frame(FirstWindow)
        self.destroy()

    def show_frame(self, cont):
        for fme in self.frames:     # Remove all frames
            self.frames[fme].grid_remove()
        frame = self.frames[cont]
        frame.grid()        # Display frame