How to start KDE in Cygwin/X vs LXDE

[Keith Christian]

When I click the XWin Server icon on the task bar, Cygwin/X starts up
just fine, and so does the LXDE desktop.

In the Start Menu, Cygwin/X offers several desktop environments
including KDE-Openbox, but choosing that shows the KDE "gear" icon and
then the LXDE desktop appears instead.

The kde-workspace kde-workspace-4.11.22-1.tar.bz2 1 package is
installed, not sure how to force X to invoke KDE instead of LXDE.

Environment is Windows 10, CYGWIN_NT-10.0 3.3.3.

Thanks!