qt_import_plugins

指定要导入 (或排除) 的自定义插件集。

命令的定义在 核心 组件对于 Qt6 包，可以像这样加载：

find_package(Qt6 REQUIRED COMPONENTS Core)

该命令在 Qt 5.14 引入。

概要

qt_import_plugins(target
                  [INCLUDE plugin ...]
                  [EXCLUDE plugin ...]
                  [INCLUDE_BY_TYPE plugin_type plugin ...]
                  [EXCLUDE_BY_TYPE plugin_type]
                  [NO_DEFAULT]
)

若无版本命令被禁用，使用 qt6_import_plugins() 代替。它支持如此命令的一组相同自变量。

描述

Specifies a custom set of plugins to import. The optional arguments: INCLUDE , EXCLUDE , INCLUDE_BY_TYPE ，和 EXCLUDE_BY_TYPE , can be used more than once.

INCLUDE – can be used to specify a list of plugins to import.
EXCLUDE – can be used to specify a list of plugins to exclude.
INCLUDE_BY_TYPE – can be used to override the list of plugins to import for a certain plugin type.
EXCLUDE_BY_TYPE – can be used to specify a plugin type to exclude; then no plugins of that type are imported.
NO_DEFAULT – prevent the default plugins from being included automatically (for example, the default platform plugin).

Qt 提供插件类型，譬如 imageformats , platforms ，和 sqldrivers .

动态插件

If plugins are dynamic libraries, the function controls the plugin deployment. Using this function, you may exclude specific plugin types from being packaged into an Android APK, for example:

qt_add_executable(MyApp ...)
...
qt_import_plugins(MyApp EXCLUDE_BY_TYPE imageformats)

In the snippet above, all plugins that have the imageformats type will be excluded when deploying MyApp . The resulting Android APK will not contain any of the imageformats 插件。

If the command isn't used, the target automatically deploys all plugins that belong to the Qt modules that the target is linked against.

静态插件

If the command isn't used the target automatically links against a sane set of default static plugins, for each Qt module that the target is linked against. For more information, see target_link_libraries .

Each plugin comes with a C++ stub file that automatically initializes the static plugin. Consequently, any target that links against a plugin has this C++ file added to its SOURCES .

范例

qt_add_executable(myapp main.cpp)
target_link_libraries(myapp Qt::Gui Qt::Sql)
qt_import_plugins(myapp
    INCLUDE Qt::QCocoaIntegrationPlugin
    EXCLUDE Qt::QMinimalIntegrationPlugin
    INCLUDE_BY_TYPE imageformats Qt::QGifPlugin Qt::QJpegPlugin
    EXCLUDE_BY_TYPE sqldrivers
)

In the snippet above, the following occurs with the executable myapp :

The Qt6::QCocoaIntegrationPlugin is imported into myapp.
The Qt6::QMinimalIntegrationPlugin plugin is excluded from being automatically imported into myapp.
The default list of plugins for imageformats is overridden to only include Qt6::QGifPlugin and Qt6::QJpegPlugin.
所有 sqldrivers plugins are excluded from automatic importing.

另请参阅 qt_import_qml_plugins() .