Function DeleteColumn

Libraries/PropertyGrid/PropertyGrid.h:370–379

   }

   BOOL DeleteColumn(int nCol)
   {
      ATLASSERT(::IsWindow(m_hWnd));
      if( TBase::GetItemCount() == 0 ) {
         m_nColumns = 0;
         return TBase::DeleteColumn(nCol);
      }
      ATLASSERT(false); // Remove items first
      return FALSE;
   }

   BOOL GetColumnCount() const
   {