如何在wxPython中以编程方式扩展PyCollapsiblePane？

Question

我使用PyCollapsiblePane让用户隐藏或避开某些信息。在某些情况下，我需要将此PyCollapsiblePane默认扩展（在创建时）。

当我使用Expand时，我的问题已解决，但窗口已缩小到最小尺寸。

如何在不缩小窗口的情况下使用此方法？

我已经尝试使用对象或其父对象的Layout方法，但是它不起作用。这是一个显示我的问题的示例：

import wx
import wx.lib.agw.pycollapsiblepane as PCP

class MyFrame(wx.Frame):

    def __init__(self, parent):

        wx.Frame.__init__(self, parent, -1, "PyCollapsiblePane Demo")

        panel = wx.Panel(self)

        title = wx.StaticText(panel, label="PyCollapsiblePane")
        title.SetFont(wx.Font(18, wx.FONTFAMILY_SWISS, wx.FONTSTYLE_NORMAL, wx.FONTWEIGHT_BOLD))
        title.SetForegroundColour("blue")

        self.cp = cp = PCP.PyCollapsiblePane(panel, label="Some Data",
                                             style=wx.CP_DEFAULT_STYLE | wx.CP_NO_TLW_RESIZE)
        self.cp.Collapse(collapse=False)
        #self.open_pane()
        self.MakePaneContent(cp.GetPane())

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(title, 0, wx.ALL, 25)
        sizer.Add(cp, 0, wx.RIGHT | wx.LEFT | wx.EXPAND, 25)

        panel.SetSizer(sizer)
        sizer.Layout()


    def open_pane(self):
        self.cp.Collapse(collapse=False)
        # this change was generated by the user - send the event
        ev = wx.CollapsiblePaneEvent(self.cp, self.cp.GetId(), self.cp.IsCollapsed())
        self.GetEventHandler().ProcessEvent(ev)

    def MakePaneContent(self, pane):
        ''' Just makes a few controls to put on `PyCollapsiblePane`. '''

        nameLbl = wx.StaticText(pane, -1, "Name:")
        name = wx.TextCtrl(pane, -1, "");

        addrLbl = wx.StaticText(pane, -1, "Address:")
        addr1 = wx.TextCtrl(pane, -1, "");
        addr2 = wx.TextCtrl(pane, -1, "");

        cstLbl = wx.StaticText(pane, -1, "City, State, Zip:")
        city  = wx.TextCtrl(pane, -1, "", size=(150,-1));
        state = wx.TextCtrl(pane, -1, "", size=(50,-1));
        zip   = wx.TextCtrl(pane, -1, "", size=(70,-1));

        addrSizer = wx.FlexGridSizer(cols=2, hgap=5, vgap=5)
        addrSizer.AddGrowableCol(1)
        addrSizer.Add(nameLbl, 0,
                      wx.ALIGN_RIGHT | wx.ALIGN_CENTER_VERTICAL)
        addrSizer.Add(name, 0, wx.EXPAND)
        addrSizer.Add(addrLbl, 0,
                      wx.ALIGN_RIGHT | wx.ALIGN_CENTER_VERTICAL)
        addrSizer.Add(addr1, 0, wx.EXPAND)
        addrSizer.Add((5,5))
        addrSizer.Add(addr2, 0, wx.EXPAND)

        addrSizer.Add(cstLbl, 0,
                      wx.ALIGN_RIGHT | wx.ALIGN_CENTER_VERTICAL)

        cstSizer = wx.BoxSizer(wx.HORIZONTAL)
        cstSizer.Add(city, 1)
        cstSizer.Add(state, 0, wx.LEFT | wx.RIGHT, 5)
        cstSizer.Add(zip)
        addrSizer.Add(cstSizer, 0, wx.EXPAND)

        border = wx.BoxSizer()
        border.Add(addrSizer, 1, wx.EXPAND | wx.ALL, 5)
        pane.SetSizer(border)


# our normal wxApp-derived class, as usual

app = wx.App(0)

frame = MyFrame(None)
app.SetTopWindow(frame)
frame.Show()

app.MainLoop()

Answer 1

好吧，我终于找到了避免该问题的技巧。不用wx.lib.agw.pycollapsiblepane.PyCollapsiblePane，而要使用wx.CollapsiblePane。多亏了它，代码可以正常工作，并且可以使用相同的方式。唯一改变的是这些对象以图形方式表示的方式。

这是我的代码的固定版本：

import wx
import wx.lib.agw.pycollapsiblepane as PCP

class MyFrame(wx.Frame):

    def __init__(self, parent):

        wx.Frame.__init__(self, parent, -1, "PyCollapsiblePane Demo")

        panel = wx.Panel(self)

        title = wx.StaticText(panel, label="PyCollapsiblePane")
        title.SetFont(wx.Font(18, wx.FONTFAMILY_SWISS, wx.FONTSTYLE_NORMAL, wx.FONTWEIGHT_BOLD))
        title.SetForegroundColour("blue")

        self.cp = cp = wx.CollapsiblePane(panel, label="Some Data",
                                             style=wx.CP_DEFAULT_STYLE | wx.CP_NO_TLW_RESIZE)
        self.MakePaneContent(cp.GetPane())
        self.cp.Expand()

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(title, 0, wx.ALL, 25)
        sizer.Add(cp, 0, wx.RIGHT | wx.LEFT | wx.EXPAND, 25)

        panel.SetSizer(sizer)
        sizer.Layout()

    def MakePaneContent(self, pane):
        ''' Just makes a few controls to put on `PyCollapsiblePane`. '''

        nameLbl = wx.StaticText(pane, -1, "Name:")
        name = wx.TextCtrl(pane, -1, "");

        addrLbl = wx.StaticText(pane, -1, "Address:")
        addr1 = wx.TextCtrl(pane, -1, "");
        addr2 = wx.TextCtrl(pane, -1, "");

        cstLbl = wx.StaticText(pane, -1, "City, State, Zip:")
        city  = wx.TextCtrl(pane, -1, "", size=(150,-1));
        state = wx.TextCtrl(pane, -1, "", size=(50,-1));
        zip   = wx.TextCtrl(pane, -1, "", size=(70,-1));

        addrSizer = wx.FlexGridSizer(cols=2, hgap=5, vgap=5)
        addrSizer.AddGrowableCol(1)
        addrSizer.Add(nameLbl, 0,
                      wx.ALIGN_RIGHT | wx.ALIGN_CENTER_VERTICAL)
        addrSizer.Add(name, 0, wx.EXPAND)
        addrSizer.Add(addrLbl, 0,
                      wx.ALIGN_RIGHT | wx.ALIGN_CENTER_VERTICAL)
        addrSizer.Add(addr1, 0, wx.EXPAND)
        addrSizer.Add((5,5))
        addrSizer.Add(addr2, 0, wx.EXPAND)

        addrSizer.Add(cstLbl, 0,
                      wx.ALIGN_RIGHT | wx.ALIGN_CENTER_VERTICAL)

        cstSizer = wx.BoxSizer(wx.HORIZONTAL)
        cstSizer.Add(city, 1)
        cstSizer.Add(state, 0, wx.LEFT | wx.RIGHT, 5)
        cstSizer.Add(zip)
        addrSizer.Add(cstSizer, 0, wx.EXPAND)

        border = wx.BoxSizer()
        border.Add(addrSizer, 1, wx.EXPAND | wx.ALL, 5)
        pane.SetSizer(border)


# our normal wxApp-derived class, as usual

app = wx.App(0)

frame = MyFrame(None)
app.SetTopWindow(frame)
frame.Show()

app.MainLoop()