QLocation Namespace

The QLocation namespace contains miscellaneous identifiers used throughout the QtLocation 模块。 更多...

头: #include <QLocation>
qmake: QT += location

    类型

    enum Visibility { UnspecifiedVisibility, DeviceVisibility, PrivateVisibility, PublicVisibility }
    flags VisibilityScope

    详细描述

    The QLocation namespace contains miscellaneous identifiers used throughout the QtLocation 模块。

    类型文档编制

    enum QLocation:: Visibility
    flags QLocation:: VisibilityScope

    Defines the visibility of a QPlace or QPlaceCategory .

    常量 描述
    QLocation::UnspecifiedVisibility 0x00 No explicit visibility has been defined.
    QLocation::DeviceVisibility 0x01 Places and categories with DeviceVisibility are only stored on the local device.
    QLocation::PrivateVisibility 0x02 Places and categories with PrivateVisibility are only visible to the current user. The data may be stored either locally or on a remote service or both.
    QLocation::PublicVisibility 0x04 Places and categories with PublicVisibility are visible to everyone.

    A particular manager may support one or more visibility scopes. For example a manager from one provider may only provide places that are public to everyone, whilst another may provide both public and private places.

    注意: The meaning of unspecified visibility depends on the context it is used.

    saving a place or category, the default visibility is unspecified meaning that the manager chooses an appropriate visibility scope for the item.

    searching for places, unspecified means that places of any scope is returned.

    The VisibilityScope type is a typedef for QFlags <Visibility>. It stores an OR combination of Visibility values.