View Port class (scroll container) has name _vp_viewport and is define in viewport.vcx. Objects are puts in inner object with name cntDesktop. After addign objects is need call method SetDesktopSize(). Example test.scx shows big image. Example test_list.scx shows long list of objects.
VFP 5, VFP 6, VFP 7, VFP 8, VFP 9, VFP Advanced, VFP Advanced 64 bit