Using 2 screens in wxpython

[Barrowman]

I am trying to use a 19" T.V with my laptop connecting it via the hdmi port.
I am running python 3.53 and wxpython 4.0.2 on my Linux Mint 18.2 HP laptop.
I found a script which allowed me to set this up. I have just been testing it out but there seems to be a snag.

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num_displays = wx.Display.GetCount()   #Open a frame on each display for display_num in range(0,num_displays): #Get a display object     display = wx.Display(display_num) #To get a wx.Rect that gives the geometry of a display     geometry = display.GetGeometry()   #Create a frame on the display     if display_num == 0:         frame0 = wx.Frame(None,-1,"Display %d"%display_num, geometry.GetTopLeft(),geometry.GetSize())         frame0.Show()     else:         frame1 = wx.Frame(None,-1,"Display %d"%display_num, geometry.GetTopLeft(),geometry.GetSize())         frame1.Show() vbox0 = wx.BoxSizer(wx.VERTICAL)   gs = wx.GridSizer(6, 5, 10, 10)           for msg in range(1,27):     mytext = str(msg)     gs.Add(wx.Button(frame0, label=mytext), 0, border=10) vbox0.Add(gs, proportion=.3, flag=wx.TOP) frame0.SetSizer(vbox0)   #=========================================================================================        vbox1 = wx.BoxSizer(wx.VERTICAL)   gt = wx.GridSizer(6, 5, 15, 15)           for msg in range(1,27):     mytext = str(msg)     gt.Add(wx.Button(frame1, label=mytext), 0, border = 15) vbox1.Add(gt, proportion=.9, flag=wx.TOP) frame1.SetSizer(vbox1)

With this the BoxSizer in frame0 ( my laptop ) appears correctly but the other one has half the column of buttons on the left obscured but not showing on my laptop screen.
Running

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import wx myapp =wx.App() for idx in range(wx.Display.GetCount()):     d = wx.Display(idx)     print( d.IsPrimary(), d.GetGeometry())

Shows the screens as 1336 x 768 ( laptop )
and 1920 x 1080 ( T.V )
altering the code for the T.V as

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frame1 = wx.Frame(None, -1, size=(1860,1080), pos=(2100, 0)) frame1.SetTitle('Frame 1') #frame1 = wx.Frame(None,-1,"Display %d"%display_num, geometry.GetTopLeft(),geometry.GetSize()) frame1.Show()

I have to position the vbox way over to the right of where I expect it should be so all columns of buttons show correctly.
I expect I am doing something wrong but I hope someone can say what that is.
Any ideas please?

[Barrowman]

I made a mistake with the above. In fact with my second way of placing the vbox using pos it does display correctly. This is true with python 3.5.3 and 3.64