\twocolwidtha{7cm}
\begin{twocollist}\itemsep=0pt
-\twocolitem{{\bf EVT\_CHECKLISTBOX(id, func)}}{Process a wxEVT\_COMMAND\_CHECKLISTBOX\_TOGGLE event,
+\twocolitem{{\bf EVT\_CHECKLISTBOX(id, func)}}{Process a wxEVT\_COMMAND\_CHECKLISTBOX\_TOGGLED event,
when an item in the check list box is checked or unchecked.}
\end{twocollist}