whether the left mouse button is (still) depressed. Also, by convention, if
\helpref{LeftDown}{wxmouseeventleftdown} returns {\tt true},
\helpref{LeftIsDown}{wxmouseeventleftisdown} will also return {\tt true} in
whether the left mouse button is (still) depressed. Also, by convention, if
\helpref{LeftDown}{wxmouseeventleftdown} returns {\tt true},
\helpref{LeftIsDown}{wxmouseeventleftisdown} will also return {\tt true} in