\twocolitem{wxDL\_GLOBAL}{equivalent of RTLD\_GLOBAL under Unix, ignored elsewhere}
\twocolitem{wxDL\_VERBATIM}{don't try to append the appropriate extension to
the library name (this is done by default).}
+\twocolitem{wxDL\_DEFAULT}{default flags, same as wxDL\_NOW currently}
\end{twocollist}
Returns \true if the library was successfully loaded, \false otherwise.