With wxMSW it is possible to call e.g. wxToolBarTool::Enable(false) on a tool before calling wxToolBar::Realize() to create the tool in an initially disabled state but this wasn't done in wxGTK version. Override Realize() now under wxGTK to bring the native toolbar buttons state in sync with the internal state of the corresponding wxToolBarTools. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@62994 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775