Application

  + Object
    + Database
      + GenericDB
        + ResourceDB
          + Application

The Application class implements the behaviors necessary for interfacing Palm OS^® and your application. This class is not instantiable or cloneable. Its functions are only available by derivation.

All applications written in HB++ must declare a single unique class deriving from the Application class. This is the main class of your project, which. the system automatically creates an instance, accessible via the global App variable. If your project does not contain a class deriving from Application, or it contains more than one, a warning is generated and your program may not work properly.

You can see in the Autograph sample an implementation of the Application class called clsApplication which manages different launch modes.

Members	Description

Alarm	Date and time of the next alarm.
AlarmTriggered	Activation of an alarm.
CustomLaunch	Custom application launch.
DisplayAlarm	Activation of an alarm.
ExgAskUser	Data reception request.
ExgReceive	Data reception.
FindItem	Global search.
GotoItem	Display a record.
NormalLaunch	Normal application launch.
Notify	Notification.
PanelCalled	Launch of a preference panel.
PhoneEvent	Phone event.
Preferences	Access application preferences.
PreferenceStrings	Access application preferences as a string.
Quit	Closes the application.
RegisterExtension	Registers the application for the reception of data.
RegisterNotify	Registers a notification request.
ReturnFromPanel	Launch after closing a configuration panel.
SubCall	Indicates if the application is already running.
SyncNotify	Startup after modifying application databases.
SystemLock	Event sent to the internal security application to lock the device.
SystemReset	Startup after system is reinitialized.
Title	Application Title.
UnregisterExtensions	Unregisters the application for reception of data.
UnregisterNotify	Unregister a notification request.
Version	Application version.

Inherited from ResourceDB	Description

FindResource	Finds a resource in a database.
Resource	Accesses a resource in a database.

Inherited from GenericDB	Description

DeleteRecord	Deletes a record from a database.
Open	Opens a database from a DatabaseInfo object.
OpenByName	Opens a database from its name.
Record	Accesses a record in a database.
RecordCount	Number of records in the database.

Inherited from Database	Description

CategoryName	Set or return a category name.
Close	Closes the database.
DmOpenRef	Internal database reference.
Info	Returns a DatabaseInfo object.
OpenCount	Number of times the database was opened.

Inherited from Object	Description

ClassID	Returns the type identifier corresponding to the actual class of the object.
Implements	Determines whether the object implements the features of a given class.
Iterate	Event raised to iterate over the elements of a container object.
Recipient	Recipient of events sent by the object.
Serialize	Event raised to serialize the object content into a stream.

System	Minimal version	Remarks

Palm OS	Palm OS 3.0	N/A