---
name: "PQtypesRegister"
section: "3"
platform: "linux"
package: "libpqtypes-dev"
version: "1.5.1-9"
release: "Debian 12 (Bookworm)"
platforms: ["linux"]
url: "https://new.carta.tech/PQtypesRegister"
---

# PQtypesRegister(3)

Registers libpqtypes with the libpq event system.

## NAME

PQtypesRegister - Registers libpqtypes with the libpq event system.

## SYNOPSIS

**#include \<libpqtypes.h\>**\

**int PQtypesRegister(PGconn \*conn);**

## DEPRECATED

THIS FUNCTION IS DEPRECATED.  New applications should use PQinitTypes. This function is now a wrapper to PQinitTypes.

## DESCRIPTION

libpqtypes makes use of the libpq Event System.  Before using libpqtypes, you must register libpqtypes as a libpq EventProc. The function takes a PGconn that libpqtypes will be registered with; each PGconn requires its own registration.

## RETURN VALUE

The function returns zero if it fails and non-zero if it succeeds.

## EXAMPLES

### Registering libpqtypes

The examples shows how to register libpqtypes with the libpq event system.

```

```

**/\* call prior to any other libpqtypes functions that operate on conn. \*/** **PQtypesRegister(conn);**

## AUTHOR

A contribution of eSilo, LLC. for the PostgreSQL Database Management System. Written by Andrew Chernow and Merlin Moncure.

## REPORTING BUGS

Report bugs to \<libpqtypes@esilo.com\>.

## COPYRIGHT

Copyright (c) 2011 eSilo, LLC. All rights reserved.\
 This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or  FITNESS FOR A PARTICULAR PURPOSE.

## SEE ALSO

None