Added workaround for subclassing bug #143 to TouchButton and ToggleButton
Added workaround for subclassing bug #143 to TouchButton and ToggleButton

svn path=/trunk/libavg/; revision=7381

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