Added missing wxID_ANY in the control creation calls. Also rephrase/extend the discussion about creating windows shown inside the static box as its children or siblings. Closes #11086. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@61628 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775