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user32/listbox: Fix scrolling for multi-column listboxes.

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Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=38565
Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>
Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Gabriel Ivăncescu 2018-08-16 18:03:49 +03:00 committed by Alexandre Julliard
parent 3f266610d5
commit f025570c80
1 changed files with 6 additions and 7 deletions
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13
dlls/user32/listbox.c
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@ -300,28 +300,27 @@ static LRESULT LISTBOX_SetTopItem( LB_DESCR *descr, INT index, BOOL scroll )
if (descr->top_item == index) return LB_OKAY;
if (scroll)
{
INT diff;
INT dx = 0, dy = 0;
if (descr->style & LBS_MULTICOLUMN)
diff = (descr->top_item - index) / descr->page_size * descr->column_width;
dx = (descr->top_item - index) / descr->page_size * descr->column_width;
else if (descr->style & LBS_OWNERDRAWVARIABLE)
{
INT i;
diff = 0;
if (index > descr->top_item)
{
for (i = index - 1; i >= descr->top_item; i--)
diff -= descr->items[i].height;
dy -= descr->items[i].height;
}
else
{
for (i = index; i < descr->top_item; i++)
diff += descr->items[i].height;
dy += descr->items[i].height;
}
}
else
diff = (descr->top_item - index) * descr->item_height;
dy = (descr->top_item - index) * descr->item_height;
ScrollWindowEx( descr->self, 0, diff, NULL, NULL, 0, NULL,
ScrollWindowEx( descr->self, dx, dy, NULL, NULL, 0, NULL,
SW_INVALIDATE | SW_ERASE | SW_SCROLLCHILDREN );
}
else