more verbose Exception message for setEventCapture()
more verbose Exception message for setEventCapture()

svn path=/trunk/libavg/; revision=3035

libavg/libavg,yyd01245/libavg,libavg/libavg,scotty007/libavg,yyd01245/libavg,libavg/libavg,scotty007/libavg,yyd01245/libavg,hoodie/libavg,th3infinity/libavg,scotty007/libavg,libavg/libavg,yyd01245/libavg,hoodie/libavg,th3infinity/libavg,scotty007/libavg,hoodie/libavg,hoodie/libavg,th3infinity/libavg,th3infinity/libavg