invert_compose.txt

howabout, instead of inheriting and deriving, and overriding:

    virtual bool     DrawSubitem            ( const column::ENUM_COL,           CDC&,                  CRect,         const UINT, INT* const, INT* const ) const = 0;
    virtual HRESULT  Text_WriteToStackBuffer( const column::ENUM_COL,           PWSTR,                 const rsize_t, rsize_t&,   rsize_t& ) const = 0;
    virtual INT      Compare                ( const COwnerDrawnListItem* const, const column::ENUM_COL ) const = 0;
    virtual COLORREF ItemTextColor          ( ) const = 0;

like:

COwnerDrawnListItem
^---CTreeListItem
    ^---CItemBranch
    
^---CDriveItem
    
^---CListItem

We invert and compose, like:

+--------------
|CTreeListItem
|--------------
||m_COwnerDrawnListItem<CTreeListItem>
||(methods):
||DrawSubitem
||Text_WriteToStackBuffer
||Compare
||ItemTextColor
|--------------
+--------------





(current heirarchy)
1>  class CItemBranch	size(80):
1>  	+---
1>  	| +--- (base class CTreeListItem)
1>  	| | +--- (base class COwnerDrawnListItem)
1>   0	| | | {vfptr}
1>   8	| | | unique_ptr m_name
1>  16	| | | m_name_length
1>    	| | | <alignment member> (size=6)
1>  	| | +---
1>  24	| | m_parent
1>  32	| | unique_ptr m_vi
1>  	| +---
1>  40	| m_childCount
1>  44	| attribs m_attr
1>    	| <alignment member> (size=3)
1>  48	| unique_ptr m_children
1>  56	| m_size
1>  64	| _FILETIME m_lastChange
1>  72	| SRECT m_rect
1>  	+---