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C H A P T E R 1 6
Find
Using the Find Service
16-21
Note
Applications implementing these methods must also implement
the usual
Find
and
DateFind
methods since a find operation
may be dispatched as other than a Selected find.
Returning Search Results
16
After constructing the finder frame, your search method needs to append it to the
system-supplied
results
array. Each element in this array is a finder frame. In
the case of a finder based on the
ROM_SoupFinder
, the array the frame has a
cursor for obtaining the items found in the search. In the case of a finder based on
the
ROM_CompatibleFinder
proto, your finder frame contains an array of the
found items themselves. You need to use the global function
AddArraySlot
to
append your finder frame to the
results
array.
The following example shows a line of code that would be placed at the end of
your application's search method to store the results of the search. In this code
fragment, the
results
parameter is the system-supplied array passed to the
Find
method, and the
myFinder
parameter is the finder frame resulting from the
search. The following call to
AddArraySlot
places the finder frame,
myFinder
,
at the end of the
results
array:
AddArraySlot(results, myFinder);
Note that the system's
results
array is cleared when the Find slip closes.
Implementing Find Overview Support
16
The messages described in this section are sent to your application when the user
taps buttons in the Find overview. These include:
the
FindSoupExcerpt
message
the
ShowFoundItem
message
If your finder frame is based on
ROM_CompatibleFinder
, you do not need to
write a
FindSoupExcerpt
method, but you must also write a
ShowFakeEntry
method to call your
ShowFoundItem
method.
The FindSoupExcerpt Method
16
If you use the
ROM_SoupFinder
proto to construct a finder frame, your
application must supply a
FindSoupExcerpt
method. This methods must extract
the name of a found item when it is given the soup entry and the finder frame, and
return it to the system as a string to display in the Find overview.
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