SBM_GETPOS message

The SBM_GETPOS message is sent to retrieve the current position of the scroll box of a scroll bar control. The current position is a relative value that depends on the current scrolling range. For example, if the scrolling range is 0 through 100 and the scroll box is in the middle of the bar, the current position is 50.

Applications should not send this message directly. Instead, they should use the GetScrollPos function. A window receives this message through its WindowProc function. Applications which implement a custom scroll bar control must respond to these messages for the GetScrollPos function to function properly.

Parameters

wParam

Not used; must be zero.

lParam

Not used; must be zero.

Return value

The return value is the current position of the scroll box in the scroll bar.

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Winuser.h (include Windows.h)

See also

Reference
SBM_GETRANGE
SBM_SETPOS
SBM_SETRANGE
SBM_SETRANGEREDRAW

 

 

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