[This is preliminary documentation and subject to change.]
Finds the result item that matches the specified string.
HRESULT FindItem(
LPRESULTFINDINFO pFindinfo, // Pointer to RESULTFINDITEM structure
int pnFoundIndex, // Pointer to returned index
);
Supports keyboard navigation through the virtual list. FindItem requests the callee to find the next result item whose display name matches the search string and return its index.