An application sends the SBM_GETSCROLLINFO message to retrieve the parameters of a scroll bar.
SBM_GETSCROLLINFO
wParam = 0; // not used, must be zero
lParam = (LPARAM) (LPSCROLLINFO) lpsi; // scroll bar parameters
Parameters
lpsi
Value of lParam. Points to a SCROLLINFO structure whose fMask member, when the message is sent, specifies the scroll bar parameters to retrieve. Before returning, the message copies the specified parameters to the appropriate members of the structure.
The fMask member can be a combination of the following values:
| Value | Meaning |
| SIF_ALL | Combination of SIF_PAGE, SIF_POS, and SIF_RANGE. |
| SIF_PAGE | Copies the scroll page to the nPage member of the SCROLLINFO structure pointed to by lpsi. |
| SIF_POS | Copies the scroll position to the nPos member of the SCROLLINFO structure pointed to by lpsi. |
| SIF_RANGE | Copies the scroll range to the nMin and nMax members of the SCROLLINFO structure pointed to by lpsi. |
Return Values
If the message retrieved any values, the return value is TRUE; otherwise, it is FALSE.
See Also