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These classes provide interfaces to hardware.

QBootSourceAccessoryInterface for querying the event which triggered the last boot sequence
QBootSourceAccessoryProviderInterface for integrating device specific boot source detection code into Qtopia
QCommDeviceControllerFacilities to control the power state of a hardware communications device
QCommDeviceSessionFacilities to initiate a device session
QDeviceIndicatorsAllows applications to control indicator lights
QHardwareInterfaceThe base class of all hardware abstraction classes
QHardwareManagerFinds available hardware abstraction providers for a given interface
QKeypadLightAccessoryAccess to the keypad light on a phone
QKeypadLightAccessoryProviderInterface for keypad light devices to integrate into Qtopia
QPowerSourceAccess to information about power sources on the device
QPowerSourceProviderInterface for power sources to integrate into Qtopia
QPowerStatusSimplified interface to the device's primary power sources
QScreenInformationAdditional information about screens beyond that from QDesktopWidget
QScreenInformationProviderThe back end implementation of QScreenInformation
QSignalSourceAccess to information about signal sources on devices
QSignalSourceProviderInterface for signal sources to integrate into Qtopia
QUsbEthernetGadgetUsed to enable ethernet communication class of USB gadgets
QUsbEthernetGadgetProviderBackend implementation for QUsbEthernetGadget
QUsbGadgetThe base class of all USB gadget classes
QUsbManagerManagers all available USB gadgets providers
QUsbSerialGadgetUsed to enable serial communication class of USB gadgets
QUsbSerialGadgetProviderBackend implementation for QUsbSerialGadget
QUsbStorageGadgetUsed to enable mass storage class of USB gadgets
QUsbStorageGadgetProviderBackend implementation for QUsbStorageGadget
QVibrateAccessoryAccess to the vibrate device on a phone
QVibrateAccessoryProviderInterface for vibrate devices to integrate into Qtopia

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Qt Extended 4.4.3