QLibraryInfo Class

QLibraryInfo class provides information about the Qt library. 更多...

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


enum LibraryLocation { PrefixPath, DocumentationPath, HeadersPath, LibrariesPath, ..., SettingsPath }


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


QLibraryInfo class provides information about the Qt library.

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 文档编制。

另请参阅 QSysInfo and Using qt.conf .


enum QLibraryInfo:: LibraryLocation

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

常量 描述
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.

另请参阅 location ().


[static] bool QLibraryInfo:: isDebugBuild ()

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

该函数在 Qt 5.0 引入。

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

Returns the location specified by loc .

[static] QVersionNumber QLibraryInfo:: version ()

Returns the version of the Qt library.

该函数在 Qt 5.8 引入。

另请参阅 qVersion ().