---
name: "libQgpsmm"
section: "3"
platform: "linux"
package: "gpsd"
version: "3.27.5-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/libQgpsmm"
---

# libQgpsmm(3)

C++ and QT class wrappers for the GPS daemon

## NAME

libgpsmm, libQgpsm - C++ and QT class wrappers for the GPS daemon

## SYNOPSIS

C++:

```
#include <libgpsmm>
struct gps_data_t * open(char * host char * port)
struct gps_data_t * open(void)
struct gps_data_t * send(char * request)
struct gps_data_t * read(void)
struct gps_data_t * waiting(int)
struct gps_data_t * stream unsigned(int flags)
```

## DESCRIPTION

*libgpsmm* and *libQgpsmm* are mere wrappers over *libgps*. The important difference between the libraries is that *libgpsmm* is targeted at C++ applications and contained in *libgps*, while *libQgpsmm* is platform independent by using *QTcpSocket* to connect to *gpsd* and shipped as an additional library due to the necessary linking to QT. Method names are the same as the analogue C functions. For a detailed description of the functions please read [libgps(3)](/libgps/3.md). `open()` must be called after class constructor and before any other method (open()\` is not inside the constructor since it may fail, however constructors have no return value). The analogue of the C function `gps_close()` is in the destructor.

## SEE ALSO

[**gpsd**(8)](/gpsd/8.md), [**gps**(1)](/gps/1.md), [**libgps**(3)](/libgps/3.md)

## RESOURCES

**Project web site:**  \<https://gpsd.io/\>

## COPYING

This file is Copyright 2013 by the GPSD project\
 SPDX-License-Identifier: BSD-2-clause

## AUTHOR

Alfredo Pironti