Collapse all Symbian^3 Application Developer Library

MHidFieldFinder Class Reference

class MHidFieldFinder

Hid field finder class The MHidFieldFinder class defines the call-back interface used by THidFieldSearch . A device driver uses THidFieldSearch::SearchL() along with a custom MHidFieldFinder object to determine whether it is compatible with a given report descriptor.

generichid.lib

Since: S60 v5.0

Public Member Functions
TBool	BeginCollection (const CCollection *)
TBool	EndCollection (const CCollection *)
void	Field (const CField *)

Member Functions Documentation

BeginCollection(const CCollection *)

TBool

BeginCollection

(

const CCollection *

aCollection

)

[pure virtual]

Called by THidFieldSearch::SearchL() during traversal of the report descriptor tree when a CCollection is encountered. It will be called once, and only once, for every CCollection in the descriptor. It is not called for the root collection (the CReportRoot ).

Since: S60 v5.0

Parameters

const CCollection * aCollection

A pointer to the collection object.

EndCollection(const CCollection *)

TBool

EndCollection

(

const CCollection *

aCollection

)

[pure virtual]

Called by THidFieldSearch::SearchL() during traversal of the report descriptor tree when all CFields and child CCollections of a CCollection have been examined. It will be called once, and only once, for every CCollection in the descriptor. It is not called for the root collection (the CReportRoot ).

Since: S60 v5.0

Parameters

const CCollection * aCollection

A pointer to the collection object.

Field(const CField *)

void

Field

(

const CField *

aField

)

[pure virtual]

Called once for each CField in a CCollection by THidFieldSearch::SearchL() during the traversal of a report descriptor tree.

Since: S60 v5.0

Parameters

const CField * aField

The pointer to field