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我正在尝试在 Tkinter 中操作列表框，但遇到了一些麻烦。我曾经把所有东西都放在一个课上，在一页上，而且效果很好。我将这些方法分成两个不同页面上的不同类（一个用于显示内容，一个用于修改它们），现在我遇到了一些问题。

我收到以下错误AttributeError: Actions has no attribute 'listbox'。我假设它与继承有关，因为在我将其拆分为两个文件之前它运行良好。

这是第一个文件

from Tkinter import *
import Tkinter
import SortActions

class MakeList(Tkinter.Listbox):

    def BuildMainWindow(self):
        menubar = Frame(relief=RAISED,borderwidth=1)
        menubar.pack()

        mb_file = Menubutton(menubar,text='file')
        mb_file.menu = Menu(mb_file)
        mb_file.menu.add_command(label='open', command = self.BuildListbox)
        mb_file.pack(side=LEFT)

        mb_edit = Menubutton(menubar,text='edit')
        mb_edit.menu = Menu(mb_edit)
        mb_edit.pack(padx=25,side=RIGHT)

        mb_file['menu'] = mb_file.menu
        mb_edit['menu'] = mb_edit.menu
        return 

    def BuildListbox(self):
        self.listbox = Tkinter.Listbox()
        index = SortActions.Actions()
        self.listbox.bind('<<ListboxSelect>>', index.GetWindowIndex)
        MoveItem = SortActions.Actions()
        self.listbox.bind('<B1-Motion>', index.MoveWindowItem)
        for item in ["one", "two", "three", "four"]:
            self.listbox.insert(END, item)    
        self.listbox.insert(END, "a list entry")
        self.listbox.pack()
        #print self.listbox.get(0, END)
        return

if __name__ == '__main__':
    start = MakeList()
    start.BuildMainWindow()
    mainloop()

第二个文件，我遇到的问题

from FileSort import MakeList


class Actions(MakeList):

    #gets the current item that was clicked in the window
    def GetWindowIndex(self, event):
        w = event.widget
        self.curIndex = int(w.curselection()[0])

    #moves the current item in the window when clicked/dragged
    def MoveWindowItem(self, event):
        i = self.listbox.nearest(event.y) #here is where the error is occurring 
        print i

我假设因为我继承了 MakeList 类，所以我应该可以访问。我也尝试过更改它，所以我直接访问了 MakeList（一个对象），但不是说“Actions instance has no...”的错误，而是说“MakeList has no attribute...”

我之前发布了一些东西，但我不小心运行了旧版本的代码，所以我引用了错误的错误。对不起，如果你看到了那个帖子。现在没了

4

1 回答 1

1

在我看来，动作没有理由在课堂上......

#SortActions.py

#gets the current item that was clicked in the window
def GetWindowIndex(self, event):
    w = event.widget
    self.curIndex = int(w.curselection()[0])

#moves the current item in the window when clicked/dragged
def MoveWindowItem(self, event):
    i = self.nearest(event.y) #here is where the error is occurring 
    print i

现在您可以使用以下操作：

   ...
   def BuildListbox(self):
        #self.listbox = Tkinter.Listbox()  #??? This has no master widget ...
        #Since this is already a listbox, there's no point in building another ...

        self.bind('<<ListboxSelect>>', lambda e:SortActions.GetWindowIndex(self,e))

        self.bind('<B1-Motion>', lambda e:SortActions.MoveWindowItem(self,e)
        for item in ("one", "two", "three", "four"):
            self.insert(END, item)    
        self.insert(END, "a list entry")
        self.pack()
于 2013-01-25T14:38:25.057 回答