Default constructor. The pen will be uninitialised, and \helpref{wxPen::Ok}{wxpenok} will
return false.
-\func{}{wxPen}{\param{const wxColour\&}{ colour}, \param{int}{ width}, \param{int}{ style}}
+\func{}{wxPen}{\param{const wxColour\&}{ colour}, \param{int}{ width = $1$}, \param{int}{ style = {\tt wxSOLID}}}
Constructs a pen from a colour object, pen width and style.