Scrolledpanel Inside Panel Not Sizing

I've been toying with this for a while and just can't seem to figure it out. self.panel = wx.Panel(self, wx.ID_ANY) I have a scrolledPanel inside a panel that does not scroll. self

Solution 1:

I think I figured it out. As usual, when adding or deleting widgets, you need to call Layout on the parent, which in this case is the scrolled panel that is getting new children. You also have to call SetupScrolling() so it can recalculate how much space there is and whether or not it needs scrollbars. Here's an example that works for me on Windows:

import wx
import wx.lib.scrolledpanel as scrolled

########################################################################
class MyForm(wx.Frame):

    #----------------------------------------------------------------------
    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY, "Tutorial", size=(200,500))

        # Add a panel so it looks the correct on all platforms
        self.panel = wx.Panel(self, wx.ID_ANY)

        # --------------------
        # Scrolled panel stuff
        self.scrolled_panel = scrolled.ScrolledPanel(self.panel, -1, 
                                 style = wx.TAB_TRAVERSAL|wx.SUNKEN_BORDER, name="panel1")
        self.scrolled_panel.SetAutoLayout(1)
        self.scrolled_panel.SetupScrolling()

        words = "A Quick Brown Insane Fox Jumped Over the Fence and Ziplined to Cover".split()
        self.spSizer = wx.BoxSizer(wx.VERTICAL)
        for word in words:
            text = wx.TextCtrl(self.scrolled_panel, value=word)
            self.spSizer.Add(text)
        self.scrolled_panel.SetSizer(self.spSizer)
        # --------------------

        btn = wx.Button(self.panel, label="Add Widget")
        btn.Bind(wx.EVT_BUTTON, self.onAdd)

        panelSizer = wx.BoxSizer(wx.VERTICAL)
        panelSizer.AddSpacer(50)
        panelSizer.Add(self.scrolled_panel, 1, wx.EXPAND)
        panelSizer.Add(btn)
        self.panel.SetSizer(panelSizer)

    #----------------------------------------------------------------------
    def onAdd(self, event):
        """"""
        print "in onAdd"
        new_text = wx.TextCtrl(self.scrolled_panel, value="New Text")
        self.spSizer.Add(new_text)
        self.scrolled_panel.Layout()
        self.scrolled_panel.SetupScrolling()

# Run the program
if __name__ == "__main__":
    app = wx.App(False)
    frame = MyForm().Show()
    app.MainLoop()