CanCopy, CanCut, CanPaste, GetSelection, IsEditable. Also added wxNotebook::SetTabSize (only implemented on wxMSW but necessary when using just an icon). git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2054 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775