QLibraryInfo Class

The QLibraryInfo class provides information about the Qt library. More...

Header:	#include <QLibraryInfo>
qmake:	QT += core

• List of all members, including inherited members
• Obsolete members

Public Types

enum	LibraryLocation { PrefixPath, DocumentationPath, HeadersPath, LibrariesPath, LibraryExecutablesPath, …, SettingsPath }

Static Public Members

bool	isDebugBuild()
QString	location(QLibraryInfo::LibraryLocation loc)
QVersionNumber	version()

Detailed Description

Many pieces of information are established when Qt is configured and built. This class provides an abstraction for accessing that information. By using the static functions of this class, an application can obtain information about the instance of the Qt library which the application is using at run-time.

You can also use a qt.conf file to override the hard-coded paths that are compiled into the Qt library. For more information, see the Using qt.conf documentation.

See also QSysInfo and Using qt.conf.

Member Type Documentation

enum QLibraryInfo::LibraryLocation

This enum type is used to specify a specific location specifier:

Constant	Value	Description
QLibraryInfo::PrefixPath	0	The default prefix for all paths.
QLibraryInfo::DocumentationPath	1	The location for documentation upon install.
QLibraryInfo::HeadersPath	2	The location for all headers.
QLibraryInfo::LibrariesPath	3	The location of installed libraries.
QLibraryInfo::LibraryExecutablesPath	4	The location of installed executables required by libraries at runtime.
QLibraryInfo::BinariesPath	5	The location of installed Qt binaries (tools and applications).
QLibraryInfo::PluginsPath	6	The location of installed Qt plugins.
QLibraryInfo::ImportsPath	7	The location of installed QML extensions to import (QML 1.x).
QLibraryInfo::Qml2ImportsPath	8	The location of installed QML extensions to import (QML 2.x).
QLibraryInfo::ArchDataPath	9	The location of general architecture-dependent Qt data.
QLibraryInfo::DataPath	10	The location of general architecture-independent Qt data.
QLibraryInfo::TranslationsPath	11	The location of translation information for Qt strings.
QLibraryInfo::ExamplesPath	12	The location for examples upon install.
QLibraryInfo::TestsPath	13	The location of installed Qt testcases.
QLibraryInfo::SettingsPath	100	The location for Qt settings. Not applicable on Windows.

See also location().

Member Function Documentation

[static] bool QLibraryInfo::isDebugBuild()

Returns true if this build of Qt was built with debugging enabled, or false if it was built in release mode.

This function was introduced in Qt 5.0.

[static] QString QLibraryInfo::location(QLibraryInfo::LibraryLocation loc)

Returns the location specified by loc.

[static] QVersionNumber QLibraryInfo::version()

Returns the version of the Qt library.

This function was introduced in Qt 5.8.

See also qVersion().