Определить позицию скролла другого процесса

Syntax

BOOL GetScrollInfo( HWND hwnd,
int fnBar,
LPSCROLLINFO lpsi
);
Parameters

hwnd
[in] Handle to a scroll bar control or a window with a standard scroll bar, depending on the value of the fnBar parameter.

fnBar
[in] Specifies the type of scroll bar for which to retrieve parameters. This parameter can be one of the following values.
SB_CTL
Retrieves the parameters for a scroll bar control. The hwnd parameter must be the handle to the scroll bar control.
SB_HORZ
Retrieves the parameters for the window's standard horizontal scroll bar.
SB_VERT
Retrieves the parameters for the window's standard vertical scroll bar.

lpsi
[in, out] Pointer to a SCROLLINFO structure. Before calling GetScrollInfo, set the cbSize member to sizeof(SCROLLINFO), and set the fMask member to specify the scroll bar parameters to retrieve. Before returning, the function copies the specified parameters to the appropriate members of the structure.
The fMask member can be one or more of the following values.

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.
SIF_TRACKPOS
Copies the current scroll box tracking position to the nTrackPos member of the SCROLLINFO structure pointed to by lpsi.
Return Value

If the function retrieved any values, the return value is nonzero.

If the function does not retrieve any values, the return value is zero. To get extended error information, call GetLastError.