After the change to the sample in r62390 it turned out that wxGTK version didn't handle items without attributes in a column where other items did have attributes neither -- they inherited the last used attribute. Fix this by remembering whether we are using any non-default attributes or not and resetting them if we do. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@62392 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775