Question

我尝试使用顶级窗口中的滚动条创建一个应用程序，当在主根窗口中按下按钮bttn时，该按钮会打开，并且从下面的代码中我需要帮助以下内容：

通过按下widget（）中定义的按钮bttn，滚动条应位于主根窗口的新顶层窗口中
新的弹出窗口应包含VerticalScrollFrame

滚动条vscrollbar不应出现在主根窗口中，只能出现在新的弹出窗口中

from Tkinter import * 
class VerticalScrolledFrame(Frame):


    def __init__(self, parent, *args, **kw):
        Frame.__init__(self, parent, *args, **kw)            

        # create a canvas object and a vertical scrollbar for scrolling it
        vscrollbar = Scrollbar(self, orient=VERTICAL)
        vscrollbar.pack(fill=Y, side=RIGHT, expand=FALSE)
        canvas = Canvas(self, bd=0, highlightthickness=0,
                        yscrollcommand=vscrollbar.set)
        canvas.pack(side=LEFT, fill=BOTH, expand=TRUE)
        vscrollbar.config(command=canvas.yview)

        # reset the view
        canvas.xview_moveto(0)
        canvas.yview_moveto(0)

        # create a frame inside the canvas which will be scrolled with it
        self.interior = interior = Frame(canvas)
        interior_id = canvas.create_window(0, 0, window=interior,
                                           anchor=NW)

        # track changes to the canvas and frame width and sync them,
        # also updating the scrollbar
        def _configure_interior(event):
            # update the scrollbars to match the size of the inner frame
            size = (interior.winfo_reqwidth(), interior.winfo_reqheight())
            canvas.config(scrollregion="0 0 %s %s" % size)
            if interior.winfo_reqwidth() != canvas.winfo_width():
                # update the canvas's width to fit the inner frame
                canvas.config(width=interior.winfo_reqwidth())
        interior.bind('<Configure>', _configure_interior)

        def _configure_canvas(event):
            if interior.winfo_reqwidth() != canvas.winfo_width():
                # update the inner frame's width to fill the canvas
                canvas.itemconfigure(interior_id, width=canvas.winfo_width())
        canvas.bind('<Configure>', _configure_canvas)


if __name__ == "__main__":

    class SampleApp(Frame):
        def __init__(self,root, *args, **kwargs):
            Frame.__init__(self, root,*args, **kwargs)


            self.frame = VerticalScrolledFrame(root)
            self.frame.pack()

            self.widget()


        def widget(self):
            self.label = Label(text="Shrink the window to activate the scrollbar.")
            self.label.pack()

            bttn = Button(self.frame.interior, text = "Flytta fram/bak i listvy", command = self.open_new_window_with_text_and_scrollbar)
            bttn.pack()

        # Should be opened in a new, top-level, window from the main root window by pressing the #button bttn defined in widget()
        # the new popup window should contain the scrollbar vscrollbar defined in SampleApp
        # the scrollbar vscrollbar shouldn't appear in the main root window, only in the new #popup window

        def open_new_window_with_text_and_scrollbar(self):

            self.top = tk.Toplevel(self)
            frame = VerticalScrolledFrame(root)
            frame.pack()
            Button = tk.Button(self.top, text="Close window", command=self.top.destroy)
            Label = tk.Label(self.top, wraplength = 500,text="testing")
            Label.pack(side="left", fill="both", expand=True)
            Button.pack()



    root = tk.Tk()
    root.title("Maltparser1.0_demo")

    root.geometry("900x700")
    app = SampleApp(root)
    root.mainloop()

Answer 1

您将root作为父母VerticalScrolledFrame传递，您需要传递self.top：

class SampleApp(Frame):

     # ...Other code...

     def open_new_window_with_text_and_scrollbar(self):
        self.top = tk.Toplevel(self)
        frame = VerticalScrolledFrame(self.top)
        frame.pack()
        # Other widgets

这就是为什么它将自己添加到主根窗口而不是Toplevel。

Tkinter的;如何在弹出/顶级窗口中使用滚动条，该窗口在主根窗口中按下按钮时打开

1 个答案: