Please notice that it is \emph{not} the same as
\helpref{LeftDown}{wxmouseeventleftdown} which returns \true if the event was
generated by the left mouse button being pressed. Rather, it simply describes
-the state of the left mouse button at the time when the event was generated.
+the state of the left mouse button at the time when the event was generated
+(so while it will be true for a left click event, it can also be true for
+a right click if it happened while the left mouse button was pressed).
This event is usually used in the mouse event handlers which process "move
mouse" messages to determine whether the user is (still) dragging the mouse.