SCROLLINFO

The SCROLLINFO structure contains scroll bar parameters to be set by the SetScrollInfo function (or SBM_SETSCROLLINFO message), or retrieved by the GetScrollInfo function (or SBM_GETSCROLLINFO message).

typedef struct tagSCROLLINFO {  // si 
    UINT cbSize; 
    UINT fMask; 
    int  nMin; 
    int  nMax; 
    UINT nPage; 
    int  nPos; 
    int  nTrackPos; 
}   SCROLLINFO; 
typedef SCROLLINFO FAR *LPSCROLLINFO; 
 

Members

cbSize

Specifies the size, in bytes, of this structure.

fMask

Specifies the scroll bar parameters to set or retrieve. This member can be a combination of the following values:

Value	Meaning
SIF_ALL	Combination of SIF_PAGE, SIF_POS, SIF_RANGE, and SIF_TRACKPOS.
SIF_DISABLENOSCROLL	This value is used only when setting a scroll bar's parameters. If the scroll bar's new parameters make the scroll bar unnecessary, disable the scroll bar instead of removing it.
SIF_PAGE	The nPage member contains the page size for a proportional scroll bar.
SIF_POS	The nPos member contains the scroll box position, which is not updated while the user drags the scroll box.
SIF_RANGE	The nMin and nMax members contain the minimum and maximum values for the scrolling range.
SIF_TRACKPOS	The nTrackPos member contains the current position of the scroll box while the user is dragging it.

nMin

Specifies the minimum scrolling position.

nMax

Specifies the maximum scrolling position.

nPage

Specifies the page size. A scroll bar uses this value to determine the appropriate size of the proportional scroll box.

nPos

Specifies the position of the scroll box.

nTrackPos

Specifies the immediate position of a scroll box that the user is dragging. An application can retrieve this value while processing the SB_THUMBTRACK notification message. An application cannot set the immediate scroll position; the SetScrollInfo function ignores this member.

QuickInfo

  Windows NT: Requires version 3.51 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Requires version 1.0 or later.
  Header: Declared in winuser.h.

See Also

Scroll Bars Overview, Scroll Bar Structures, SBM_GETSCROLLINFO, SBM_SETSCROLLINFO, GetScrollInfo, SetScrollInfo