51Degrees Device Detection C/C++  4.4

Meta data example of using 51Degrees device detection.The example shows how to:

1. Specify the name of the data file, properties the data set should be initialised with, and the configuration.
   using namespace FiftyoneDegrees;

   string fileName = "51Degrees-V4.1.hash";

   string propertiesString = "ScreenPixelsWidth,HardwareModel,IsMobile,BrowserName";

   Common::RequiredPropertiesConfig *properties =

   new Common::RequiredPropertiesConfig(&propertiesString);

   DeviceDetection::Hash::ConfigHash *config =

   new DeviceDetection::Hash::ConfigHash();
2. Construct a new engine from the specified data file with the required properties and the specified configuration.
   using namespace FiftyoneDegrees;

   DeviceDetection::Hash::EngineHash *engine =

   new DeviceDetection::Hash::EngineHash(

   dataFilePath,

   config,

   properties);
3. Fetch a collection containing the meta data of all the properties in the engine's data set.
   using namespace FiftyoneDegrees;

   Common::Collection<string, Common::PropertyMetaData> *properties =

   engine->getMetaData()->getProperties();
4. Iterate over all the properties and print the name and description. Note that getting a property meta data instance will return a new instance which holds no reference to the engine nor any of its internals. Therefore it is the responsibility of the caller to delete it once it is no longer needed.
   using namespace FiftyoneDegrees;

   for (uint32_t i = 0; i < properties->getSize(); i++){

   Common::PropertyMetaData *property = properties->getByIndex(i);

   cout << property->getName() << " - " << property->getDescription() << "\n";

   delete property;

   }
5. Release the memory used by the properties collection, and its reference to the engine's underlying data set.
   delete properties;
6. Finally release the memory used by the engine.
   delete engine;