KIdleTime
Reporting of idle time of user and system.
KIdleTime is a singleton reporting information on idle time. It is useful not only for finding out about the current idle time of the PC, but also for getting notified upon idle time events, such as custom timeouts, or user activity.
Using the Module
Using a Qt module's C++ API requires linking against the module library, either directly or through other dependencies. Several build tools have dedicated support for this, including CMake and qmake.
Building with CMake
Use the find_package() command to locate the needed module component in the Qt6 package:
find_package(Qt6 REQUIRED COMPONENTS KF6)
target_link_libraries(mytarget PRIVATE Qt6::KF6)
For more details, see the Build with CMake overview.