windows-server-2003/shell/shdocvw/autoscrl.h

// stuff for doing auto scrolling
#define NUM_POINTS	3
typedef struct {	// asd
    int iNextSample;
    DWORD dwLastScroll;
    BOOL bFull;
    POINT pts[NUM_POINTS];
    DWORD dwTimes[NUM_POINTS];
} AUTO_SCROLL_DATA;

#define DAD_InitScrollData(pad) (pad)->bFull = FALSE, (pad)->iNextSample = 0, (pad)->dwLastScroll = 0
BOOL DAD_AutoScroll(HWND hwnd, AUTO_SCROLL_DATA *pad, const POINT *pptNow);