更改 tkinter 列表框中的项目顺序

2022-01-16 00:00:00 python tkinter user-interface widget listbox

问题描述

有没有比删除特定键的值然后重新输入新信息更简单的方法来更改 tkinter 列表框中的项目顺序?

Is there an easier way to change the order of items in a tkinter listbox than deleting the values for specific key, then re-entering new info?

例如，我希望能够重新排列列表框中的项目.如果我想交换两个位置，这就是我所做的.它有效，但我只是想看看是否有更快的方法来做到这一点.

For example, I want to be able to re-arrange items in a listbox. If I want to swap the position of two, this is what I've done. It works, but I just want to see if there's a quicker way to do this.

def moveup(self,selection):
    value1 = int(selection[0]) - 1 #value to be moved down one position
    value2 = selection #value to be moved up one position
    nameAbove = self.fileListSorted.get(value1) #name to be moved down
    nameBelow = self.fileListSorted.get(value2) #name to be moved up

    self.fileListSorted.delete(value1,value1)
    self.fileListSorted.insert(value1,nameBelow)
    self.fileListSorted.delete(value2,value2)
    self.fileListSorted.insert(value2,nameAbove)

解决方案

有没有比删除特定键的值然后重新输入新信息更简单的方法来更改 tkinter 列表框中的项目顺序?

Is there an easier way to change the order of items in a tkinter listbox than deleting the values for specific key, then re-entering new info?

没有.删除并重新插入是唯一的方法.但是，如果您只想将单个项目向上移动一个，则只需一次删除和插入即可.

No. Deleting and re-inserting is the only way. If you just want to move a single item up by one you can do it with only one delete and insert, though.

def move_up(self, pos):
    """ Moves the item at position pos up by one """

    if pos == 0:
        return

    text = self.fileListSorted.get(pos)
    self.fileListSorted.delete(pos)
    self.fileListSorted.insert(pos-1, text)

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