The two member functions, SetAsSortKey() and SetSortOrder(), were doing almost
the same thing but differently and the former was only used in the generic
wxDataViewCtrl implementation and not implemented in the native GTK/OS X one.
Remove SetAsSortKey() entirely and only keep UnsetAsSortKey() which is still
needed by generic/MSW wxDataViewCtrl. But only SetSortOrder() should now be
called to indicate that the column is used for sorting.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@69174 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
number of columns in it, it turns out that getting column information from
the associated control is much easier than copying it into the control.
- Provide wxHeaderCtrlSimple derived class which can be used easily if
callback approach of wxHeaderCtrl is not needed.
- Because of wxHeaderCtrl virtualization, port-specific implementations of
wxHeaderColumn are not needed any more and were removed.
- Use wxHeaderCtrl in the generic wxDataViewCtrl: this means that column
events are broken right now in it as they haven't been implemented by
wxHeaderCtrl yet, this will be fixed a.s.a.p.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@57161 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
