Pt_ARG_LIST_COLUMN_ATTR does not work in Phindows

Setting list column attributes (e.g. Pt_LIST_COLUMN_LEFT,
Pt_LIST_COLUMN_RIGHT, Pt_LIST_COLUMN_ELLIPSIS) does not work when an
application is run in Phindows.

I wrote a test application with 5 columns in a PtList widget; 3 of the
columns were right-aligned, 2 left-aligned, one of the 2 left-aligned
columns also had Pt_LIST_COLUMN_ELLIPSIS set. The application works
correctly when viewed on my target’s screen. When I run the application on
the same target through Phindows, all columns are left-aligned (the
default) and the ellipses do not appear.

Rick