I am creating a layout using wxFormBuilder. I have a frame, wxBoxSizer (wxToolBar and wxListBook in it) and a wxMenuBar with a wxMenu in it, like so: https://i.sstatic.net/GVc5J.png
I then view the XRC Window and it seems ok: https://i.sstatic.net/jnOYv.png
Then, I add a tool to the toolbar, like so: https://i.sstatic.net/MrMRa.png
The problem shows up when I then check the XRC Window and I see that there is a blank space between the menubar and the toolbar: https://i.sstatic.net/N93nc.png
How can I remove this gap? Thanks.
Normal, default frame toolbar shouldn't be added to the sizer managing the rest of the frame elements because it's already handled by wxFrame itself automatically, so if you just need a toolbar positioned in the standard location (as opposed to having a toolbar in the middle of a window or something like that) you just shouldn't do this. I'm still not sure where does the gap come from but I am pretty sure that it will disappear once you stop adding toolbar to the sizer.
