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Back to article list Search Articles Add Comment Printer friendly Direct link Windows API: Extracting hight and low order values 2002-03-06 -- Larry Sand Newsgroups: comp.lang.clarion,softvelocity.products.c55ee
Robert,
If you have this prototype:
ScWndProc PROCEDURE(UNSIGNED hWnd, |
UNSIGNED uMsg, |
UNSIGNED wParam, |
LONG lParam)!,LONG,PASCAL
As Edward notes, the word order of an Intel 32 bit integer is reversed,
so define this structure over the wParam to get the low order word
containing the scroll bar value.
wP GROUP,OVER(wParam)
low USHORT
high USHORT
END
Then you can do some thing like:
CASE wP.low
OF SB_LEFT
!handle the upper left scroll
....
END
Cheers,
Larry Sand
"Robert Rodgers"
Today is November 23, 2024, 3:26 am This article has been viewed 35206 times. Google search has resulted in 35 hits on this article since January 25, 2004.
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