\twocolitem{\windowstyle{wxTR\_MULTIPLE}}{Use this style
to allow a range of items to be selected.
If a second range is selected, the current range, if any, is deselected.}
-\twocolitem{\windowstyle{wxTR\_EXTENDED}}{Use this style
-to allow disjoint items to be selected. (Only partially implemented; may not work in all cases.)}
\twocolitem{\windowstyle{wxTR\_DEFAULT\_STYLE}}{The set of flags that are
closest to the defaults for the native control for a particular toolkit.}
\end{twocollist}