//
// delegate methods
//
--(void) outlineView:(NSOutlineView*)outlineView mouseDownInHeaderOfTableColumn:(NSTableColumn*)tableColumn
+-(void) outlineView:(NSOutlineView*)outlineView didClickTableColumn:(NSTableColumn*)tableColumn
{
wxDataViewColumn* const
col([static_cast<wxDVCNSTableColumn*>(tableColumn) getColumnPointer]);