wxpython：GridBagSizer 让我很困惑

Question

我是 python GUI 的新手，wxpython也是。现在我面临以下问题。

这里的代码是

import wx

class Example(wx.Frame):

    def __init__(self, parent, title):

        super(Example, self).__init__(parent, title=title)

        self.InitUI()

        self.Centre()

        self.Show()

    def InitUI(self):

        panel = wx.Panel(self)

        sizer = wx.GridBagSizer(0, 0)

        text = wx.StaticText(panel, label="Name:")

        sizer.Add(text, pos=(0, 0), flag=wx.ALL, border=5)

        tc = wx.TextCtrl(panel)

        sizer.Add(tc, pos=(0, 1), span=(1, 2), flag=wx.EXPAND | wx.ALL, border=5)

        text1 = wx.StaticText(panel, label="address")

        sizer.Add(text1, pos=(1, 0), flag=wx.ALL, border=5)

        tc1 = wx.TextCtrl(panel, style=wx.TE_MULTILINE)

        sizer.Add(tc1, pos=(1, 1), span=(1, 3), flag=wx.EXPAND | wx.ALL, border=5)

        text11 = wx.StaticText(panel, label="address2")

        sizer.Add(text11, pos=(1, 4), flag=wx.ALL, border=5)

        tc11 = wx.TextCtrl(panel, style=wx.TE_MULTILINE)

        sizer.Add(tc11, pos=(1, 5), span=(1, 3), flag=wx.EXPAND | wx.ALL, border=5)

        text2 = wx.StaticText(panel, label="age")

        sizer.Add(text2, pos=(2, 0), flag=wx.ALL, border=5)

        tc2 = wx.TextCtrl(panel)

        sizer.Add(tc2, pos=(2, 1), flag=wx.ALL, border=5)

        text3 = wx.StaticText(panel, label="Mob.No")

        sizer.Add(text3, pos=(2, 2), flag=wx.ALIGN_CENTER | wx.ALL, border=5)

这里的结果是

让我感到困惑的是标签。address2它显然没有跨越三列。

text11 = wx.StaticText(panel, label="address2")

sizer.Add(text11, pos=(1, 4), flag=wx.ALL, border=5)

tc11 = wx.TextCtrl(panel, style=wx.TE_MULTILINE)

sizer.Add(tc11, pos=(1, 5), span=(1, 3), flag=wx.EXPAND | wx.ALL, border=5)

但是address2标签的代码与标签相同，address除了 param pos。有人可以解释一下。

环境：python3.7/wxpython4.0.4（最新）

Answer 1

那3列的定义是什么？您是否为要使用的第 5,6 和 7 列定义了任何内容sizer？没有东西可以使用 sizer 不知道这些列有多大，所以你必须给它一些东西来使用或定义一个空的单元格大小。import wxclass Example(wx.Frame):    def __init__(self, parent, title):        super(Example, self).__init__(parent, title=title, size=(750,-1))        self.InitUI()        self.Centre()        self.Show()    def InitUI(self):        panel = wx.Panel(self, -1)        sizer = wx.GridBagSizer(0, 7)        text = wx.StaticText(panel, label="Name:")        sizer.Add(text, pos=(0, 0), flag=wx.ALL, border=5)## place some dummy text to give the sizer something to work with##        dummy4 = wx.StaticText(panel, label="something")#        sizer.Add(dummy4, pos=(0, 4), flag=wx.ALL, border=5)#        dummy5 = wx.StaticText(panel, label="something")#        sizer.Add(dummy5, pos=(0, 5), flag=wx.ALL, border=5)#        dummy6 = wx.StaticText(panel, label="something")#        sizer.Add(dummy6, pos=(0, 6), flag=wx.ALL, border=5)#        dummy7 = wx.StaticText(panel, label="something")#        sizer.Add(dummy7, pos=(0, 7), flag=wx.ALL, border=5)## or set a cell size for empty cells#        sizer.SetEmptyCellSize((130,20))        tc = wx.TextCtrl(panel)        sizer.Add(tc, pos=(0, 1), span=(1, 2), flag=wx.EXPAND | wx.ALL, border=5)        text1 = wx.StaticText(panel, label="address")        sizer.Add(text1, pos=(1, 0), flag=wx.ALL, border=5)        tc1 = wx.TextCtrl(panel, style=wx.TE_MULTILINE)        sizer.Add(tc1, pos=(1, 1), span=(1, 3), flag=wx.EXPAND | wx.ALL, border=5)        text11 = wx.StaticText(panel, label="address2")        sizer.Add(text11, pos=(1, 4), flag=wx.ALL, border=5)        tc11 = wx.TextCtrl(panel, style=wx.TE_MULTILINE)        sizer.Add(tc11, pos=(1, 5), span=(1, 3), flag=wx.EXPAND | wx.ALL, border=5)        text2 = wx.StaticText(panel, label="age")        sizer.Add(text2, pos=(2, 0), flag=wx.ALL, border=5)        tc2 = wx.TextCtrl(panel)        sizer.Add(tc2, pos=(2, 1), flag=wx.ALL, border=5)        text3 = wx.StaticText(panel, label="Mob.No")        sizer.Add(text3, pos=(2, 2), flag=wx.ALIGN_CENTER | wx.ALL, border=5)        tc3 = wx.TextCtrl(panel)        sizer.Add(tc3, pos=(2, 3), flag=wx.EXPAND | wx.ALL, border=5)        text4 = wx.StaticText(panel, label="Description")        sizer.Add(text4, pos=(3, 0), flag=wx.ALL, border=5)        tc4 = wx.TextCtrl(panel, style=wx.TE_MULTILINE)        sizer.Add(tc4, pos=(3, 1), span=(1, 3), flag=wx.EXPAND | wx.ALL, border=5)        sizer.AddGrowableRow(3)        buttonOk = wx.Button(panel, label="Ok")        buttonClose = wx.Button(panel, label="Close")        sizer.Add(buttonOk, pos=(4, 2), flag=wx.ALL, border=5)        sizer.Add(buttonClose, pos=(4, 3), flag=wx.ALL, border=5)        panel.SetSizerAndFit(sizer)app = wx.App()Example(None, title='GridBag Demo')app.MainLoop()ps 如果您只是将地址 2 放在地址 1 下方，则布局可能会更好