Change the return type of {Append,Insert,Prepend}Column() to bool and add
missing "const" to Compare().
Closes #14089.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70874 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Change the return type of {Append,Insert,Prepend}Column() to bool and add
missing "const" to Compare().
Closes #14089.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70874 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775