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user32: Always call ScrollWindowEx in the listbox WM_VSCROLL handler.

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Daniel Jelinski 2012-12-12 20:34:31 +01:00 committed by Alexandre Julliard
parent 4eb769451e
commit 39222f6ab7
1 changed files with 6 additions and 17 deletions
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23
dlls/user32/listbox.c
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@ -297,20 +297,12 @@ static LRESULT LISTBOX_SetTopItem( LB_DESCR *descr, INT index, BOOL scroll )
if (index < 0) index = 0;
if (descr->style & LBS_MULTICOLUMN) index -= index % descr->page_size;
if (descr->top_item == index) return LB_OKAY;
if (descr->style & LBS_MULTICOLUMN)
{
INT diff = (descr->top_item - index) / descr->page_size * descr->column_width;
if (scroll && (abs(diff) < descr->width))
ScrollWindowEx( descr->self, diff, 0, NULL, NULL, 0, NULL,
SW_INVALIDATE | SW_ERASE | SW_SCROLLCHILDREN );
else
scroll = FALSE;
}
else if (scroll)
if (scroll)
{
INT diff;
if (descr->style & LBS_OWNERDRAWVARIABLE)
if (descr->style & LBS_MULTICOLUMN)
diff = (descr->top_item - index) / descr->page_size * descr->column_width;
else if (descr->style & LBS_OWNERDRAWVARIABLE)
{
INT i;
diff = 0;
@ -328,11 +320,8 @@ static LRESULT LISTBOX_SetTopItem( LB_DESCR *descr, INT index, BOOL scroll )
else
diff = (descr->top_item - index) * descr->item_height;
if (abs(diff) < descr->height)
ScrollWindowEx( descr->self, 0, diff, NULL, NULL, 0, NULL,
SW_INVALIDATE | SW_ERASE | SW_SCROLLCHILDREN );
else
scroll = FALSE;
ScrollWindowEx( descr->self, 0, diff, NULL, NULL, 0, NULL,
SW_INVALIDATE | SW_ERASE | SW_SCROLLCHILDREN );
}
if (!scroll) InvalidateRect( descr->self, NULL, TRUE );
descr->top_item = index;