Python 调整帧大小

我已经被困了几天，试图弄明白如何使用这种方法在TKInter中动态调整帧的大小

class SampleApp(tk.Tk):


    def __init__(self, *args, **kwargs):
        tk.Tk.__init__(self, *args, **kwargs)

        # the container is where we'll stack a bunch of frames
        # on top of each other, then the one we want visible
        # will be raised above the others
        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 (StartPage, PageOne, PageTwo):
            page_name = F.__name__
            frame = F(container, self)
            self.frames[page_name] = frame

            # put all of the pages in the same location;
            # the one on the top of the stacking order
            # will be the one that is visible.
            frame.grid(row=0, column=0, sticky="nsew")

        self.show_frame("StartPage")

    def show_frame(self, page_name):
        '''Show a frame for the given page name'''
        frame = self.frames[page_name]
        frame.tkraise()


class StartPage(tk.Frame):

    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        self.controller = controller
        label = tk.Label(self, text="This is the start page", font=TITLE_FONT)
        label.pack(side="top", fill="x", pady=10)

        button1 = tk.Button(self, text="Go to Page One",
                            command=lambda: controller.show_frame("PageOne"))
        button2 = tk.Button(self, text="Go to Page Two",
                            command=lambda: controller.show_frame("PageTwo"))
        button1.pack()
        button2.pack()


class PageOne(tk.Frame):

    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        self.controller = controller
        label = tk.Label(self, text="This is page 1", font=TITLE_FONT)
        label.pack(side="top", fill="x", pady=10)
        button = tk.Button(self, text="Go to the start page",
                           command=lambda: controller.show_frame("StartPage"))
        button.pack()


class PageTwo(tk.Frame):

    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        self.controller = controller
        label = tk.Label(self, text="This is page 2", font=TITLE_FONT)
        label.pack(side="top", fill="x", pady=10)
        button = tk.Button(self, text="Go to the start page",
                           command=lambda: controller.show_frame("StartPage"))
        button.pack()


if __name__ == "__main__":
    app = SampleApp()
    app.mainloop()

我从中复制了这段代码，因为我采用了相同的方法

class SampleApp(tk.Tk):


    def __init__(self, *args, **kwargs):
        tk.Tk.__init__(self, *args, **kwargs)

        # the container is where we'll stack a bunch of frames
        # on top of each other, then the one we want visible
        # will be raised above the others
        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 (StartPage, PageOne, PageTwo):
            page_name = F.__name__
            frame = F(container, self)
            self.frames[page_name] = frame

            # put all of the pages in the same location;
            # the one on the top of the stacking order
            # will be the one that is visible.
            frame.grid(row=0, column=0, sticky="nsew")

        self.show_frame("StartPage")

    def show_frame(self, page_name):
        '''Show a frame for the given page name'''
        frame = self.frames[page_name]
        frame.tkraise()


class StartPage(tk.Frame):

    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        self.controller = controller
        label = tk.Label(self, text="This is the start page", font=TITLE_FONT)
        label.pack(side="top", fill="x", pady=10)

        button1 = tk.Button(self, text="Go to Page One",
                            command=lambda: controller.show_frame("PageOne"))
        button2 = tk.Button(self, text="Go to Page Two",
                            command=lambda: controller.show_frame("PageTwo"))
        button1.pack()
        button2.pack()


class PageOne(tk.Frame):

    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        self.controller = controller
        label = tk.Label(self, text="This is page 1", font=TITLE_FONT)
        label.pack(side="top", fill="x", pady=10)
        button = tk.Button(self, text="Go to the start page",
                           command=lambda: controller.show_frame("StartPage"))
        button.pack()


class PageTwo(tk.Frame):

    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        self.controller = controller
        label = tk.Label(self, text="This is page 2", font=TITLE_FONT)
        label.pack(side="top", fill="x", pady=10)
        button = tk.Button(self, text="Go to the start page",
                           command=lambda: controller.show_frame("StartPage"))
        button.pack()


if __name__ == "__main__":
    app = SampleApp()
    app.mainloop()

---

我面临的问题是，使用这种方法，所有帧都堆叠在一个容器中，而这个容器的大小是其“最大帧”的大小。从一个帧移动到另一个帧不会动态调整相应窗口的大小，并且会在小帧中产生巨大的可用空间。我尝试了不同的技术，使容器中的所有帧都可以动态调整大小，但没有取得多大成功。有人能建议我能做什么吗？

不要堆叠框架，而是确保网格一次只管理一个框架。您可以通过调用当前帧的

grid\u remove（）

，然后在新帧上调用

grid（）

。或者，由于懒惰，您可以对所有内容调用

grid\u remove（）

，这样您就不必记住哪个页面是当前页面

def show_frame(self, page_name):
    '''Show a frame for the given page name'''
    for frame in self.frames.values():
        frame.grid_remove()
    frame = self.frames[page_name]
    frame.grid()

注意：如果使用根窗口上的

几何体

方法为主窗口指定固定大小，或者如果用户手动调整窗口大小，则自动调整大小将停止工作。这是因为tkinter假设，如果有东西明确要求一个窗口大小，那么应该遵守该大小

如果始终希望调整窗口大小，则应将几何图形重置为空字符串。您可以将其添加为

show\u frame

方法中的最后一条语句：

frame.winfo_toplevel().geometry("")

---

成功了！非常感谢，布莱恩。但是，我正在考虑分别设置每个帧的窗口大小。比如frame1-300x300，frame2-400x550等等。我有什么办法可以做到吗？事实上，这比我想象的要容易。show_框架中很少有if语句起作用。@user134：最简单的方法是在每个框架上将

overrideredirect

设置为false。这样，您就可以按常规方式直接为框架指定宽度和高度。这通常不是最好的方法。相反，将内部小部件配置为您想要的大小，并让框架增大或缩小以容纳小部件。如果显式设置宽度和高度，如果用户更改字体，或者UI运行在具有不同分辨率的系统上，则UI可能无法正常工作。@BryanOakley据您所知，是否有方法使此转换看起来更平滑？虽然从功能上讲，它完成了任务，但我发现在删除当前帧然后添加新帧的过程中出现了一些闪光，这是不吸引人的。我尝试使用winfo_reqwidth/reqheight属性，但在设置几何体和重新调整小部件时，加载过程中似乎有很多延迟。