Content of RPM libxfcegui4-devel-4.0.3-1mdk.i586.rpm :
/usr/include/xfce4/libxfcegui4
/usr/include/xfce4/libxfcegui4/dialogs.h
/usr/include/xfce4/libxfcegui4/gtk_style.h
/usr/include/xfce4/libxfcegui4/gtktoxevent.h
/usr/include/xfce4/libxfcegui4/icons.h
/usr/include/xfce4/libxfcegui4/libnetk.h
/usr/include/xfce4/libxfcegui4/libxfcegui4.h
/usr/include/xfce4/libxfcegui4/netk-application.h
/usr/include/xfce4/libxfcegui4/netk-enum-types.h
/usr/include/xfce4/libxfcegui4/netk-marshal.h
/usr/include/xfce4/libxfcegui4/netk-pager.h
/usr/include/xfce4/libxfcegui4/netk-screen.h
/usr/include/xfce4/libxfcegui4/netk-tasklist.h
/usr/include/xfce4/libxfcegui4/netk-trayicon.h
/usr/include/xfce4/libxfcegui4/netk-util.h
/usr/include/xfce4/libxfcegui4/netk-window-menu.h
/usr/include/xfce4/libxfcegui4/netk-window.h
/usr/include/xfce4/libxfcegui4/netk-workspace.h
/usr/include/xfce4/libxfcegui4/preview_filesel.h
/usr/include/xfce4/libxfcegui4/session-client.h
/usr/include/xfce4/libxfcegui4/xfce_clock.h
/usr/include/xfce4/libxfcegui4/xfce_decorbutton.h
/usr/include/xfce4/libxfcegui4/xfce_decortoggle.h
/usr/include/xfce4/libxfcegui4/xfce_framebox.h
/usr/include/xfce4/libxfcegui4/xfce_iconbutton.h
/usr/include/xfce4/libxfcegui4/xfce_marshal.h
/usr/include/xfce4/libxfcegui4/xfce_menubutton.h
/usr/include/xfce4/libxfcegui4/xfce_movehandler.h
/usr/include/xfce4/libxfcegui4/xfce_systemtray.h
/usr/include/xfce4/libxfcegui4/xfce_togglebutton.h
/usr/include/xfce4/libxfcegui4/xinerama.h
/usr/lib/libxfcegui4
/usr/lib/libxfcegui4.1
/usr/lib/libxfcegui4.1.0.6
/usr/lib/libxfcegui4.a
/usr/lib/libxfcegui4.la
/usr/lib/pkgconfig/libxfcegui4-1.0.pc