From Tracker Software PDF SDK
Removes items from the command items box.
HRESULT DeleteItems([in] LONG nIndex, [in, defaultvalue(1)] LONG nCount);
- [in] Value of LONG containing the starting index of the items that should be removed.
- [in, defaultvalue(1)] Value of LONG containing the number of the command items that should be removed.
Returns S_OK if operation was successful or error code in other cases.