clicks must fall to generate a double-click.}
\twocolitem{{\bf wxSYS\_DCLICK\_Y}}{Height in pixels of rectangle within which two successive mouse
clicks must fall to generate a double-click.}
+\twocolitem{{\bf wxSYS\_DCLICK\_MSEC}}{Maximal time, in milliseconds, which may
+pass between subsequent clicks for a double click to be generated.}
\twocolitem{{\bf wxSYS\_DRAG\_X}}{Width in pixels of a rectangle centered on a drag point
to allow for limited movement of the mouse pointer before a drag operation begins.}
\twocolitem{{\bf wxSYS\_DRAG\_Y}}{Height in pixels of a rectangle centered on a drag point