当前位置：文江博客话题详情

使用wxListbox设置当前所选项目的字符串

发布于 2025-01-05 10:19:24 字数 78 浏览 1 评论 0原文

我有一个列表框，

如何将列表框当前所选项目的字符串更改为另一个字符串？

我真的无法在谷歌上找到如何做到这一点。

原文

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

柏拉图鍀咏恒 2025-01-12 10:19:24

只需删除选定的字符串并插入一个新字符串，就像本示例中针对单选列表框所做的那样：

import wx

class MyFrame(wx.Frame):
    def __init__(self, *args, **kwds):
        wx.Frame.__init__(self, *args, style=wx.DEFAULT_FRAME_STYLE)
        self.button = wx.Button(self, -1, "Change")
        self.Bind(wx.EVT_BUTTON, self.ButtonPress, self.button)

        self.tc = wx.TextCtrl(self, -1)
        self.lb = wx.ListBox(self, -1, choices = ('One', 'Two'))

        box = wx.BoxSizer(wx.VERTICAL)
        box.Add(self.lb, 0, wx.EXPAND, 0)
        box.Add(self.tc, 0, wx.EXPAND, 0)
        box.Add(self.button, 0, wx.ADJUST_MINSIZE, 0)
        self.SetSizer(box)
        box.Fit(self)
        self.Layout()

    def ButtonPress(self, evt):
        txt = self.tc.GetValue()
        pos = self.lb.GetSelection()
        self.lb.Delete(pos)
        self.lb.Insert(txt, pos)

if __name__ == "__main__":
    app = wx.PySimpleApp(0)
    frame = MyFrame(None, -1, "")
    frame.Show()
    app.MainLoop()

如果您需要多选列表框，那么您应该使用 style=wx.LB_MULTIPLE 创建它：

        self.lb = wx.ListBox(self, -1, choices = ('One', 'Two'), style=wx.LB_MULTIPLE)

现在您可以一次更改多个字符串：

    def ButtonPress(self, evt):
        txt = self.tc.GetValue()
        for pos in self.lb.GetSelections():
            self.lb.Delete(pos)
            self.lb.Insert(txt, pos)

Just delete selected string and insert a new one, like it is done in this example for a single-choice listbox:

import wx

class MyFrame(wx.Frame):
    def __init__(self, *args, **kwds):
        wx.Frame.__init__(self, *args, style=wx.DEFAULT_FRAME_STYLE)
        self.button = wx.Button(self, -1, "Change")
        self.Bind(wx.EVT_BUTTON, self.ButtonPress, self.button)

        self.tc = wx.TextCtrl(self, -1)
        self.lb = wx.ListBox(self, -1, choices = ('One', 'Two'))

        box = wx.BoxSizer(wx.VERTICAL)
        box.Add(self.lb, 0, wx.EXPAND, 0)
        box.Add(self.tc, 0, wx.EXPAND, 0)
        box.Add(self.button, 0, wx.ADJUST_MINSIZE, 0)
        self.SetSizer(box)
        box.Fit(self)
        self.Layout()

    def ButtonPress(self, evt):
        txt = self.tc.GetValue()
        pos = self.lb.GetSelection()
        self.lb.Delete(pos)
        self.lb.Insert(txt, pos)

if __name__ == "__main__":
    app = wx.PySimpleApp(0)
    frame = MyFrame(None, -1, "")
    frame.Show()
    app.MainLoop()

If you need multiple-selection listbox, then you should create it with style=wx.LB_MULTIPLE:

        self.lb = wx.ListBox(self, -1, choices = ('One', 'Two'), style=wx.LB_MULTIPLE)

Now you're able to change multiple strings at once:

    def ButtonPress(self, evt):
        txt = self.tc.GetValue()
        for pos in self.lb.GetSelections():
            self.lb.Delete(pos)
            self.lb.Insert(txt, pos)

回复收藏 0 原文

~没有更多了~