ScrolledPanel with vertical scrollbar only and WrapSizer

python, sizer, wxpython, wxwidgets

Solution

Solution:

reset the width of the scroll panel virtual size to the displayable size.

import wx
import wx.lib.scrolledpanel as scrolled

class MyPanel(scrolled.ScrolledPanel):
    def __init__(self, parent):
        scrolled.ScrolledPanel.__init__(self, parent, style=wx.VSCROLL)
        self.SetBackgroundColour('#f8f8f8')
        self.sizer = wx.WrapSizer()
        self.SetupScrolling(scroll_x = False)
        self.parent = parent

        self.addButton(self.sizer , 10)
        self.SetSizer(self.sizer )
        self.Bind(wx.EVT_SIZE, self.onSize)

    def onSize(self, evt):
        size = self.GetSize()
        vsize = self.GetVirtualSize()
        self.SetVirtualSize((size[0], vsize[1]))

        evt.Skip()

    def addButton(self, sizer, num):
        for i in range(1, num):
            btn =wx.Button( self, wx.ID_ANY, "btn"+str(i), wx.DefaultPosition, wx.DefaultSize, 0 )
            sizer.Add(btn, 0, wx.ALL, 10)

if __name__=='__main__':
    app = wx.App(redirect=False)
    frame = wx.Frame(None)
    MyPanel(frame)
    frame.Show()
    app.MainLoop()

Problem

I uses a `WrapSizer` in order to have an automatic layout (as thumbnail gallery) like this (see screenshot on the left) : I would like that if there are two many elements, a (vertical only)-`ScrollBar` is added on the panel (see right screenshot). How to add such a vertical scrollbar to a panel using a WrapSizer? I tried by mixing `WrapSizer` and `ScrolledPanel`, but I cannot get the desired layout. ``` class MyPanel(scrolled.ScrolledPanel): def __init__(self, parent): scrolled.ScrolledPanel.__init__(self, parent) self.SetBackgroundColour('#f8f8f8') sizer = wx.WrapSizer() self.SetupScrolling() # add some widgets btn1, btn2, etc. in the WrapSizer sizer.Add(btn1, 0, wx.ALL, 10) sizer.Add(btn2, 0, wx.ALL, 10) ```

Original source