The
qt.conf
file overrides the hard-coded paths that are compiled into the Qt library. These paths are accessible using the
QLibraryInfo
class. Without
qt.conf
, the functions in
QLibraryInfo
return these hard-coded paths; otherwise they return the paths as specified in
qt.conf
.
Without
qt.conf
, the Qt libraries will use the hard-coded paths to look for plugins, translations, and so on. These paths may not exist on the target system, or they may not be accesssible. Because of this, you need
qt.conf
to make the Qt libraries look elsewhere.
QLibraryInfo
将加载
qt.conf
从以下位置之一：
:/qt/etc/qt.conf
使用资源系统
assistant.app/Contents/Resources/qt.conf
The
qt.conf
文件是 INI 文本文件，作为描述在
QSettings
documentation. The file should have a
Paths
group which contains the entries that correspond to each value of the
QLibraryInfo::LibraryLocation
enum. See the
QLibraryInfo
documentation for details on the meaning of the various locations.
| Entry | 默认值 |
|---|---|
| 前缀 | QCoreApplication::applicationDirPath () |
| 文档编制 |
doc
|
| 头 |
包括
|
| 库 |
lib
|
| Binaries |
bin
|
| 插件 |
plugins
|
| Imports |
imports
|
| 数据 |
.
|
| 翻译 |
translations
|
| 设置 |
.
|
| 范例 |
.
|
| 演示 |
.
|
Absolute paths are used as specified in the
qt.conf
file. All paths are relative to the
前缀
. On Windows and X11, the
前缀
is relative to the directory containing the application executable (
QCoreApplication::applicationDirPath
()). On Mac OS X, the
前缀
is relative to the
内容
in the application bundle. For example,
application.app/Contents/plugins/
is the default location for loading Qt plugins. Note that the plugins need to be placed in specific sub-directories under the
plugins
directory (see
如何创建 Qt 插件
了解细节)。
For example, a
qt.conf
file could contain the following:
[Paths] Prefix = /some/path Translations = i18n
Subgroups of the
Paths
group may be used to specify locations for specific versions of the Qt libraries. Such subgroups are of the form
Paths/x.y.z
, where x is the major version of the Qt libraries, y the minor, and z the patch level. The subgroup that most closely matches the current Qt version is used. If no subgroup matches, the
Paths
group is used as the fallback. The minor and patch level values may be omitted, in which case they default to zero.
For example, given the following groups:
Paths Paths/4 Paths/4.1 Paths/4.2.5 Paths/6
The current version will be matched as shown:
Paths/4
Paths/4.1
Paths/4.2.5
(because 4.2.5 is the latest version with the same major version number)
Paths
Paths/6