Maps and Navigation (C++) ¶

Provides C++ classes for Geocoding and Navigation.

Maps and Navigation provides C++ utilities for geocoding (finding a geographic coordinate from a street address) and navigation (including driving and walking directions).

Currently it is not possible to interact with maps via C++. Mapping applications must use the Maps and Navigation (QML) API.

Geocoding ¶

In C++, an address-to-coordinate query is performed using the geocode() 方法在 QGeoCodingManager class. For coordinate-to-address queries, the reverseGeocode() method is available on the same class. Instances of QGeoCodingManager are available via QGeoServiceProvider .

Key Classes

QGeoServiceProvider

提供 QGeoCodingManager instance ready for use.

QGeoCodingManager

Accepts queries and produces QGeoCodeReply 对象。

QGeoCodeReply

Contains the results of a geocoding query.

导航 ¶

In C++, a route query is performed using the calculate() 方法在 QGeoRoutingManager class. The returned route reply can contain multiple routes to the same destination.

Key Classes

QGeoServiceProvider

提供 QGeoCodingManager instance ready for use.

QGeoRoutingManager

Accepts queries and produces QGeoRouteReply 对象。

QGeoRouteReply

Contains the results of a routing query.

QGeoRoute

Contains information about a route.

`QGeoServiceProvider`	提供 `QGeoCodingManager` instance ready for use.
`QGeoCodingManager`	Accepts queries and produces `QGeoCodeReply` 对象。
`QGeoCodeReply`	Contains the results of a geocoding query.

`QGeoServiceProvider`	提供 `QGeoCodingManager` instance ready for use.
`QGeoRoutingManager`	Accepts queries and produces `QGeoRouteReply` 对象。
`QGeoRouteReply`	Contains the results of a routing query.
`QGeoRoute`	Contains information about a route.

内容表

上一话题

下一话题

快速搜索

Maps and Navigation (C++) ¶

Geocoding ¶

导航 ¶