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Make sure winhelp doesn't scroll outside of its display area.

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This commit is contained in:
Johan Dahlin 2003-08-11 18:41:52 +00:00 committed by Alexandre Julliard
parent 49b408b192
commit 84d5992357
1 changed files with 7 additions and 1 deletions
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8
programs/winhelp/winhelp.c
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@ -814,6 +814,8 @@ static LRESULT CALLBACK WINHELP_TextWndProc(HWND hWnd, UINT msg, WPARAM wParam,
RECT rect;
INT Min, Max;
INT CurPos = GetScrollPos(hWnd, SB_VERT);
INT dy;
GetScrollRange(hWnd, SB_VERT, &Min, &Max);
GetClientRect(hWnd, &rect);
@ -831,7 +833,11 @@ static LRESULT CALLBACK WINHELP_TextWndProc(HWND hWnd, UINT msg, WPARAM wParam,
}
if (update)
{
INT dy = GetScrollPos(hWnd, SB_VERT) - CurPos;
if (CurPos > Max)
CurPos = Max;
else if (CurPos < Min)
CurPos = Min;
dy = GetScrollPos(hWnd, SB_VERT) - CurPos;
SetScrollPos(hWnd, SB_VERT, CurPos, TRUE);
ScrollWindow(hWnd, 0, dy, NULL, NULL);
UpdateWindow(hWnd);