https://lxr.kde.org/source/libraries/ktextaddons/textaddonswidgets/slidecontainer.cpp
/kf6-qt6/libraries/ktextaddons/textaddonswidgets/slidecontainer.cpp
KDE Source Cross Reference
librariescpp
https://lxr.kde.org/source/libraries/ktextaddons/textaddonswidgets/lineeditcatchreturnkey.cpp
/kf6-qt6/libraries/ktextaddons/textaddonswidgets/lineeditcatchreturnkey.cpp
KDE Source Cross Reference
librariescpp