/usr/include/kpropsdlg.h is in kdelibs5-dev 4:4.14.16-0ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | #ifdef KDE_NO_COMPAT
#error "kpropsdlg.h needs to be replaced with kpropsdialog.h"
#else
#include <kpropsdialog.h>
#endif
|