BCGControlBar Pro for MFC
DWORD_PTR CBCGPTreeCtrl::GetSafeItemData ( HTREEITEM  hItem) const

Retrieves the application-specific value associated with the item specified by nItem.

This method is very similar to CTreeCtrl::GetItemData, but if the specified index is incorrect, the method returns 0 instead of the thowing exception.

Parameters
hItemThe item whose data is to be retrieved.