Added PEN input support to GraphicsWindowWin32 with the WM_POINTER* framework available since Windows 8. Fallback on existing WM_TOUCH implementation for actual touch inputs.
Added PEN input support to GraphicsWindowWin32 with the WM_POINTER* framework available since Windows 8.
Fallback on existing WM_TOUCH implementation for actual touch inputs.

openscenegraph/osg,jtorresfabra/osg,openscenegraph/osg,scrawl/osg,scrawl/osg,openscenegraph/osg,jtorresfabra/osg,scrawl/osg,scrawl/osg,openscenegraph/osg,jtorresfabra/osg,jtorresfabra/osg