How to use Landmarks API

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Article

Created: eswar_illuri (25 Mar 2008)

Last edited: hamishwillee (26 Jul 2012)

The following code snippets are how to open and read the landmarks from landmarks database

Header required:

#include <epos_cposlandmarkdatabase.h>
#inlcude <epos_CPosLmItemIterator.h>

Library required:

LIBRARY eposlandmarks.lib

Capability required:

Capability LocalServices NetworkServices ReadDeviceData 
Calability ReadUserData WriteDeviceData WriteUserData

Opening Landmarks database

CPosLandmarkDatabase* db = CPosLandmarkDatabase::OpenL();
CleanupStack::PushL(db);
ExecuteAndDeleteLD(db->InitializeL());
CPosLmItemIterator* iter = db->LandmarkIteratorL();
CleanupStack::PushL(iter);
TPosLmItemId lmID;
while ((lmID = iter->NextL()) != KPosLmNullItemId)
    {
    CPosLandmark* lm = db->ReadLandmarkLC(lmID);    
    CleanupStack::PopAndDestroy(lm);
    }
CleanupStack::PopAndDestroy(2, db);

Reading Landmarks from database

CPosLmCategoryManager* categoryManager = CPosLmCategoryManager::NewL(*aDb);
CleanupStack::PushL(categoryManager);
CPosLmItemIterator* iter = categoryManager->CategoryIteratorL();
CleanupStack::PushL(iter);
TPosLmItemId catID;
while ((catID = iter->NextL()) != KPosLmNullItemId)
    {
    CPosLandmarkCategory* cat = categoryManager->ReadCategoryLC(catID);
    CleanupStack::PopAndDestroy(cat);
    }
CleanupStack::PopAndDestroy(2, categoryManager);

Related Links:

• Landmarks/web client example using Carbide.c++ and UI designer
• How to select and show a landmark
• How to compact local landmark databases
• How to export landmarks from database to file
• How to import landmarks from file to database
• Execution of landmark operations
• How to obtain and save current location
• Retrieving location information