| QAbstractSecuritySession | Generic mechanism to enable permission checks for services |
| QAbstractValueSpaceLayer | Support for adding new logical data layers to the Qt Value Space |
| QAudioCaptureSource | Interface to query and select an audio input device |
| QAudioDeviceControl | Audio input/output device selector media control |
| QAudioEncoderControl | Access to the settings of a media service that performs audio encoding |
| QAudioEncoderSettings | Set of audio encoder settings |
| QAudioFormat | Stores audio parameter information |
| QCamera | Interface for system camera devices |
| QCameraControl | Abstract base class for classes that control still cameras or video cameras |
| QCameraExposureControl | Supplies control for exposure related camera parameters |
| QCameraFocusControl | Supplies control for focusing related camera parameters |
| QContact | Addressbook contact |
| QContactAbstractRequest | Mechanism for asynchronous requests to be made of a manager if it supports them |
| QContactAction | Interface for performing an action on a QContact or QContactDetail |
| QContactActionDescriptor | Information that uniquely identifies a specific implementation of an action |
| QContactActionFactory | Interface for clients to retrieve instances of action implementations |
| QContactActionFilter | Filter based around an action availability criterion |
| QContactAddress | Contains an address of a contact |
| QContactAnniversary | Contains the anniversary of a contact |
| QContactAvatar | Contains the avatar of a contact |
| QContactBirthday | Contains the birthday of a contact |
| QContactChangeLogFilter | Filter based around a contact timestamp criterion |
| QContactChangeSet | Simple API to simplify the emission of state-change signals from QContactManagerEngine implementations |
| QContactDetail | Access to a single, complete detail about a contact |
| QContactDetailDefinition |
| QContactDetailDefinitionFetchRequest | Allows a client to asynchronously request detail definitions from a contacts store manager |
| QContactDetailDefinitionField | Field in a QContactDetail |
| QContactDetailDefinitionRemoveRequest | Allows a client to asynchronously request that certain detail definitions be removed from a contacts store |
| QContactDetailDefinitionSaveRequest | Allows a client to asynchronously request that certain detail definitions be saved in a contacts store |
| QContactDetailFilter | Filter based around a detail value criterion |
| QContactDetailRangeFilter | Filter based around a detail value range criterion |
| QContactDisplayLabel | The (possibly synthesized) display label of a contact |
| QContactEmailAddress | Contains the email address of a contact |
| QContactFamily | Contains the names of the family members of a contact |
| QContactFetchRequest | Allows a client to asynchronously request contacts from a contacts store manager |
| QContactFilter | Used to select contacts made available through a QContactManager |
| QContactGender | Contains the gender of a contact |
| QContactGeolocation | Contains the global location coordinate associated with a contact |
| QContactGuid | Contains the globally unique Id of a contact |
| QContactId | Information that uniquely identifies a contact in a particular manager |
| QContactIntersectionFilter | Filter which intersects the results of other filters |
| QContactInvalidEngine | Implementation of QContactManagerEngine whose functions always return an error |
| QContactInvalidFilter | Matches no contacts |
| QContactLocalIdFetchRequest | Allows a client to asynchronously request a list of contact ids from a contacts store manager |
| QContactLocalIdFilter | Filter based around a list of contact ids |
| QContactManager |
| QContactManagerEngine | The interface for all implementations of the contact manager backend functionality |
| QContactManagerEngineFactory | The interface for plugins that implement QContactManagerEngine functionality |
| QContactMemoryEngine | In-memory implementation of a contacts backend |
| QContactName | Contains the name of a contact |
| QContactNickname | Contains a nickname of a contact |
| QContactNote | Contains a note associated with a contact |
| QContactOnlineAccount | The online account, which the contact uses to communicate with friends and family |
| QContactOrganization | Details about an organization that the contact is either a part of, or stands for |
| QContactPhoneNumber | Phone number of a contact |
| QContactRelationship | Describes a one-to-one relationship between a locally-stored contact and another (possibly remote) contact |
| QContactRelationshipFetchRequest | Allows a client to asynchronously request relationships from a contacts store manager |
| QContactRelationshipFilter | Filter based around relationship criteria |
| QContactRelationshipRemoveRequest | Allows a client to asynchronously request that certain relationships be removed from a contacts store |
| QContactRelationshipSaveRequest | Allows a client to asynchronously request that certain groups be saved to a contacts store |
| QContactRemoveRequest | Allows a client to asynchronously request that certain contacts be removed from a contacts store |
| QContactSaveRequest | Allows a client to asynchronously request that certain contacts be saved to a contacts store |
| QContactSortOrder | Defines how a list of contacts should be ordered according to some criteria |
| QContactSyncTarget | Sync target for a contact |
| QContactTimestamp | Contains the creation and last-modified timestamp associated with the contact |
| QContactType | Describes the type of the contact |
| QContactUnionFilter | Filter which unions the results of other filters |
| QContactUrl | Contains a url associated with a contact |
| QGeoAreaMonitor | Enables the detection of proximity changes for a specified set of coordinates |
| QGeoCoordinate | Defines a geographical position on the surface of the Earth |
| QGeoPositionInfo | Contains information gathered on a global position, direction and velocity at a particular point in time |
| QGeoPositionInfoSource | Abstract base class for the distribution of positional updates |
| QGeoSatelliteInfo | Contains basic information about a satellite |
| QGeoSatelliteInfoSource | Abstract base class for the distribution of satellite information updates |
| QGraphicsVideoItem | Graphics item which display video produced by a QMediaObject |
| QImageCaptureControl | Control interface for image capture services |
| QImageEncoderControl | Access to the settings of a media service that performs image encoding |
| QImageEncoderSettings | Set of image encoder settings |
| QImageProcessingControl | Abstract class for controling image processing parameters, like white balance, contrast, saturation, sharpening and denoising |
| QMediaContent | Access to the resources relating to a media content |
| QMediaControl | Base interface for media service controls |
| QMediaFormatControl | Access to the output format of a QMediaService |
| QMediaImageViewer | Means of viewing image media |
| QMediaObject | Common base for multimedia objects |
| QMediaPlayer | Allows the playing of a media source |
| QMediaPlayerControl | Access to the media playing functionality of a QMediaService |
| QMediaPlaylist | List of media content to play |
| QMediaPlaylistControl | Access to the playlist functionality of a QMediaService |
| QMediaPlaylistIOPlugin | Interface for media playlist I/O plug-ins |
| QMediaPlaylistNavigator | Navigation for a media playlist |
| QMediaPlaylistProvider | Abstract list of media |
| QMediaPlaylistReader | Interface for reading a playlist file |
| QMediaPlaylistWriter | Interface for writing a playlist file |
| QMediaRecorder | Used for the recording of media content |
| QMediaRecorderControl | Access to the recording functionality of a QMediaService |
| QMediaResource | Description of a media resource |
| QMediaService | Common base class for media service implementations |
| QMediaServiceFeaturesInterface | Interface identifies features supported by a media service plug-in |
| QMediaServiceProvider | Abstract allocator for media services |
| QMediaServiceProviderHint | Describes what is required of a QMediaService |
| QMediaServiceProviderPlugin | Interface provides an interface for QMediaService plug-ins |
| QMediaServiceSupportedDevicesInterface | Interface identifies the devices supported by a media service plug-in |
| QMediaServiceSupportedFormatsInterface | Interface identifies if a media service plug-in supports a media format |
| QMediaStreamsControl | Media stream selection control |
| QMessage | Convenient interface for working with messages |
| QMessageAccount | Represents a messaging account in the messaging store |
| QMessageAccountFilter | Defines the parameters used for querying a subset of all available accounts from the messaging store |
| QMessageAccountId | Unique identifier for a QMessageAccount messaging account, within the scope of the messaging store |
| QMessageAccountOrdering | Defines the parameters used for sorting a subset of queried accounts from the messaging store |
| QMessageAddress | Interface for a message address |
| QMessageContentContainer | Interface for internet media (MIME) and Transport Neutral Encapsulation Format (TNEF) content that is possibly only partially retrieved |
| QMessageContentContainerId | Unique identifier for QMessageContentContainer internet media (MIME) type entities, within the scope of the containing message |
| QMessageFilter | Defines the parameters used for querying a subset of all available messages from the messaging store |
| QMessageFolder | Interface for folders containing messages in the messaging store |
| QMessageFolderFilter | Defines the parameters used for querying a subset of all available folders from the messaging store |
| QMessageFolderId | Unique identifier for a QMessageFolder message folder, within the scope of the messaging store |
| QMessageFolderOrdering | Defines the parameters used for sorting a subset of queried folders from the messaging store |
| QMessageId | Unique identifier for a QMessage message within the scope of the messaging store |
| QMessageOrdering | Defines the parameters used for sorting a subset of queried messages from the messaging store |
| QMessageServiceAction | The interface for requesting messaging services |
| QMessageStore | Represents the main interface for storage and retrieval of messages, folders and accounts in the messaging store |
| QMetaDataControl | Access to the meta-data of a QMediaService's media |
| QNetworkConfiguration | Abstraction of one or more access point configurations |
| QNetworkConfigurationManager | Manages the network configurations provided by the system |
| QNetworkSession | Control over the system's access points and enables session management for cases when multiple clients access the same access point |
| QNmeaPositionInfoSource | Positional information using a NMEA data source |
| QRadioTuner | Interface to the systems analog radio device |
| QRadioTunerControl | Access to the radio tuning functionality of a QMediaService |
| QServiceContext | Context information to services |
| QServiceFilter | Defines criteria for defining a sub-set of all available services |
| QServiceInterfaceDescriptor | Identifies a service implementation |
| QServiceManager | Enables the loading of service plugins and the (de)registration of services |
| QServicePluginInterface | Defines the interface that every plug-in based service must implement |
| QSystemDeviceInfo | Access to device information from the system |
| QSystemDisplayInfo | Access to display information from the system |
| QSystemInfo | Access to various general information from the system |
| QSystemNetworkInfo | Access to network information from the system |
| QSystemScreenSaver | Access to screen saver and blanking |
| QSystemStorageInfo | Access to memory and disk information from the system |
| QValueSpacePublisher | Allows applications to publish values in the Value Space |
| QValueSpaceSubscriber | Allows applications to read and subscribe to Value Space paths |
| QVersitContactExporter | Exports QContact(s) into QVersitDocument(s) |
| QVersitContactImporter | Creates QContacts from QVersitDocuments |
| QVersitDocument | Container for 0..n versit properties |
| QVersitProperty | Stores the name, value and parameters of a versit property |
| QVersitReader | Interface for reading versit documents such as vCards from a stream |
| QVersitWriter | Interface for writing a versit document such as a vCard to a text stream |
| QVideoDeviceControl | Video device selector media control |
| QVideoEncoderControl | Access to the settings of a media service that performs video encoding |
| QVideoEncoderSettings | Set of video encoder settings |
| QVideoOutputControl | Means of selecting the active video output control |
| QVideoRendererControl | Control for rendering to a video surface |
| QVideoWidget | Widget which presents video produced by a media object |
| QVideoWidgetControl | Media control which implements a video widget |
| QVideoWindowControl | Media control for rendering video to a window |