Wxpython Collapsiblepane Strange Clipping Issue

This is a follow up from allocating more size in sizer to wx.CollapsiblePane when expanded. EDIT: The answer to that question solved my original problem, which was that nothing mo

Solution 1:

If I am getting you right, you want the code here - allocating more size in sizer to wx.CollapsiblePane when expanded to work properly. The reason it did not work was you forgot to bind the wx.EVT_COLLAPSIBLEPANE_CHANGED. Here is a code which worked for me -

import wx

class SampleCollapsiblePane(wx.CollapsiblePane):
    def __init__(self, *args, **kwargs):
        wx.CollapsiblePane.__init__(self,*args,**kwargs)
        sizer = wx.BoxSizer(wx.VERTICAL)

        for x in range(5):
            sizer.Add(wx.Button(self.GetPane(), label = str(x)))

        self.GetPane().SetSizer(sizer)
        self.Bind(wx.EVT_COLLAPSIBLEPANE_CHANGED, self.on_change)

    def on_change(self, event):
        self.GetParent().Layout()

class Main_Frame(wx.Frame):
    def __init__(self, *args, **kwargs):
        wx.Frame.__init__(self, *args, **kwargs)

        self.main_panel = wx.Panel(self)
        sizer = wx.BoxSizer(wx.VERTICAL)

        for x in range(5):
            sizer.Add(SampleCollapsiblePane(self.main_panel, label = str(x)), 0)

        self.main_panel.SetSizer(sizer)


class SampleApp(wx.App):
    def OnInit(self):
        frame = Main_Frame(None, title = "Sample App")
        frame.Show(True)
        frame.Centre()
        return True

def main():
    app = SampleApp(0)
    app.MainLoop()

if __name__ == "__main__":
    main()

EDIT: Looks like it may be a bug in wxPython running on windows. Below is screen shot of the the exact same code that has problems on Windows running on Ubuntu with no problems.