Question

目前，我有这个：

from tkinter import *
from tkinter.ttk import *


class MainGUI(Frame):

    chapters = []

    def __init__(self, parent):
        Frame.__init__(self, parent)
        self.parent = parent
        #refresh function contents here
        self.chapters.append("hi")
        #
        self.initUI()

    def initUI(self):
        self.parent.title("Latest Chapters")
        self.style = Style()
        #self.style.theme_use("default")

        scrollbar = Scrollbar(self)
        scrollbar.pack(side=RIGHT, fill=BOTH)

        listbox = Listbox(self, yscrollcommand=scrollbar.set)

        for newChapter in self.chapters:
            listbox.insert(END, newChapter)

        listbox.pack(side=TOP, fill=BOTH)
        scrollbar.config(command=listbox.yview)

        frame = Frame(self, relief=RAISED, borderwidth=1)
        frame.pack(fill=BOTH, expand=True)

        self.pack(fill=BOTH, expand=True)

        closeButton = Button(self, text="Close", command=self.master.destroy)
        closeButton.pack(side=RIGHT, padx=5, pady=5)
        refreshButton = Button(self, text="Refresh Now", command=self.refresh)
        refreshButton.pack(side=RIGHT)

    def refresh(self):
        self.chapters.append("hi")
        #print("Refresh")
        #refresh func here
        self.initUI()

def main():
    root = Tk()
    root.geometry("300x207+300+300")
    app = MainGUI(root)
    root.mainloop()

if __name__ == '__main__':
    main()

单击我的刷新按钮，chapters数组附加了一个附加项。 chapters数组已初始化，并在Listbox中显示为initUI()。当我单击 refresh 按钮时，我希望对GUI窗口中显示的chapters数组进行更改。我不确定该怎么做 - 到目前为止，我已经尝试再次调用self.initUI()，但它只是制作了多个较小的帧。感谢所有帮助！

Answer 1

您可以通过Listbox实例的MainGUI属性来实现，以便您可以在refresh()方法中轻松引用它。完成后，向chapters列表和 Listbox实例添加新项目非常简单：

这就是我的意思：

from tkinter import *
from tkinter.ttk import *


class MainGUI(Frame):
    chapters = []

    def __init__(self, parent):
        Frame.__init__(self, parent)
        self.parent = parent
        #refresh function contents here
        self.chapters.append("hi")
        self.initUI()

    def initUI(self):
        self.parent.title("Latest Chapters")
        self.style = Style()
        #self.style.theme_use("default")
        scrollbar = Scrollbar(self)
        scrollbar.pack(side=RIGHT, fill=BOTH)

        self.listbox = Listbox(self, yscrollcommand=scrollbar.set)

        for newChapter in self.chapters:
            self.listbox.insert(END, newChapter)

        self.listbox.pack(side=TOP, fill=BOTH)
        scrollbar.config(command=self.listbox.yview)

        frame = Frame(self, relief=RAISED, borderwidth=1)
        frame.pack(fill=BOTH, expand=True)

        self.pack(fill=BOTH, expand=True)

        closeButton = Button(self, text="Close", command=self.master.destroy)
        closeButton.pack(side=RIGHT, padx=5, pady=5)
        refreshButton = Button(self, text="Refresh Now", command=self.refresh)
        refreshButton.pack(side=RIGHT)

    def refresh(self):
        self.chapters.append("hi2")  # add string to list
        self.listbox.insert(END, self.chapters[-1])  # update Listbox

def main():
    root = Tk()
    root.geometry("300x207+300+300")
    app = MainGUI(root)
    root.mainloop()

if __name__ == '__main__':
    main()

这里是几次单击立即刷新按钮后的样子。

更新列表框的显示内容作为单独列表的内容更改？

1 个答案: