In the previous section, we defined an overloaded version of GetNextItem()
which returns the next item in the outline as if the outline were completely
expanded. We now define its counterpart: GetPrevItem(). This function uses
the GetLastItem() defined in an earlier section.
// GetNextItem - Get previous item
as if outline was completely expanded
- The item immediately above the reference item
- The reference item
HTREEITEM CTreeCtrlX::GetPrevItem( HTREEITEM hItem )
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