This event class contains information about the events generated by the mouse:
they include mouse buttons press and release events and mouse move events.
-All mouse events involving the buttons use $1$ for the left mouse button, $2$
-for the middle one and $3$ for the right one. Note that not all mice have
-a middle button so a portable application should avoid relying on the events
-from it.
+All mouse events involving the buttons use {\tt wxMOUSE\_BTN\_LEFT} for the
+left mouse button, {\tt wxMOUSE\_BTN\_MIDDLE} for the middle one and
+{\tt wxMOUSE\_BTN\_RIGHT} for the right one. Note that not all mice have a
+middle button so a portable application should avoid relying on the events from
+it.
{\bf NB:} Note that under Windows mouse enter and leave events are not natively supported
by the system but are generated by wxWindows itself. This has several
\member{int}{m\_wheelDelta}
-The wheel delta, normally 120.
+The wheel delta, normally $120$.
\membersection{wxMouseEvent::m\_linesPerAction}
Returns true if the Alt key was down at the time of the event.
-\membersection{wxMouseEvent::Button}
+\membersection{wxMouseEvent::Button}\label{wxmouseeventbutton}
\func{bool}{Button}{\param{int}{ button}}
Returns true if the identified mouse button is changing state. Valid
-values of {\it button} are 1, 2 or 3 for left, middle and right
-buttons respectively.
+values of {\it button} are:
-\membersection{wxMouseEvent::ButtonDClick}\label{buttondclick}
+\begin{twocollist}\itemsep=0pt
+\twocolitem{{\tt wxMOUSE\_BTN\_LEFT}}{check if left button was pressed}
+\twocolitem{{\tt wxMOUSE\_BTN\_MIDDLE}}{check if left button was pressed}
+\twocolitem{{\tt wxMOUSE\_BTN\_RIGHT}}{check if left button was pressed}
+\twocolitem{{\tt wxMOUSE\_BTN\_ANY}}{check if any button was pressed}
+\end{twocollist}
+
+\membersection{wxMouseEvent::ButtonDClick}
-\func{bool}{ButtonDClick}{\param{int}{ but = -1}}
+\func{bool}{ButtonDClick}{\param{int}{ but = wxMOUSE\_BTN\_ANY}}
If the argument is omitted, this returns true if the event was a mouse
double click event. Otherwise the argument specifies which double click event
-was generated (1, 2 or 3 for left, middle and right buttons respectively).
+was generated (see \helpref{Button}{wxmouseeventbutton} for the possible
+values).
\membersection{wxMouseEvent::ButtonDown}
If the argument is omitted, this returns true if the event was a mouse
button down event. Otherwise the argument specifies which button-down event
-was generated (1, 2 or 3 for left, middle and right buttons respectively).
+was generated (see \helpref{Button}{wxmouseeventbutton} for the possible
+values).
+
\membersection{wxMouseEvent::ButtonUp}
If the argument is omitted, this returns true if the event was a mouse
button up event. Otherwise the argument specifies which button-up event
-was generated (1, 2 or 3 for left, middle and right buttons respectively).
+was generated (see \helpref{Button}{wxmouseeventbutton} for the possible
+values).
+
\membersection{wxMouseEvent::ControlDown}
\constfunc{int}{GetButton}{\void}
-Returns the mouse button which generated this event or $-1$ if no button is
-involved (for mouse move, enter or leave event, for example). The value $1$ is
-returned for the left button down, up and double click events, $2$ and $3$ for
-the same events for the middle and the right buttons respectively.
+Returns the mouse button which generated this event or {\tt wxMOUSE\_BTN\_NONE}
+if no button is involved (for mouse move, enter or leave event, for example).
+Otherwise {\tt wxMOUSE\_BTN\_LEFT} is returned for the left button down, up and
+double click events, {\tt wxMOUSE\_BTN\_MIDDLE} and {\tt wxMOUSE\_BTN\_RIGHT}
+for the same events for the middle and the right buttons respectively.
\membersection{wxMouseEvent::GetPosition}\label{wxmouseeventgetposition}
\constfunc{int}{GetWheelDelta}{\void}
-Get wheel delta, normally 120. This is the threshold for action to be
+Get wheel delta, normally $120$. This is the threshold for action to be
taken, and one such action (for example, scrolling one increment)
should occur for each delta.