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user32/listbox: Store the items array size instead of using HeapSize().

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Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Gabriel Ivăncescu 2018-12-03 13:32:10 +03:00 committed by Alexandre Julliard
parent 8700ef560e
commit ae4199e264
1 changed files with 14 additions and 7 deletions
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21
dlls/user32/listbox.c
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@ -67,6 +67,7 @@ typedef struct
INT height; /* Window height */
LB_ITEMDATA *items; /* Array of items */
INT nb_items; /* Number of items */
UINT items_size; /* Total number of allocated items in the array */
INT top_item; /* Top visible item */
INT selected_item; /* Selected item */
INT focus_item; /* Item that has the focus */
@ -713,7 +714,7 @@ static LRESULT LISTBOX_InitStorage( LB_DESCR *descr, INT nb_items )
nb_items += LB_ARRAY_GRANULARITY - 1;
nb_items -= (nb_items % LB_ARRAY_GRANULARITY);
if (descr->items) {
nb_items += HeapSize( GetProcessHeap(), 0, descr->items ) / sizeof(*item);
nb_items += descr->items_size;
item = HeapReAlloc( GetProcessHeap(), 0, descr->items,
nb_items * sizeof(LB_ITEMDATA));
}
@ -727,6 +728,7 @@ static LRESULT LISTBOX_InitStorage( LB_DESCR *descr, INT nb_items )
SEND_NOTIFICATION( descr, LBN_ERRSPACE );
return LB_ERRSPACE;
}
descr->items_size = nb_items;
descr->items = item;
return LB_OKAY;
}
@ -1537,12 +1539,10 @@ static LRESULT LISTBOX_InsertItem( LB_DESCR *descr, INT index,
if (index == -1) index = descr->nb_items;
else if ((index < 0) || (index > descr->nb_items)) return LB_ERR;
if (!descr->items) max_items = 0;
else max_items = HeapSize( GetProcessHeap(), 0, descr->items ) / sizeof(*item);
if (descr->nb_items == max_items)
if (descr->nb_items == descr->items_size)
{
/* We need to grow the array */
max_items += LB_ARRAY_GRANULARITY;
max_items = descr->items_size + LB_ARRAY_GRANULARITY;
if (descr->items)
item = HeapReAlloc( GetProcessHeap(), 0, descr->items,
max_items * sizeof(LB_ITEMDATA) );
@ -1554,6 +1554,7 @@ static LRESULT LISTBOX_InsertItem( LB_DESCR *descr, INT index,
SEND_NOTIFICATION( descr, LBN_ERRSPACE );
return LB_ERRSPACE;
}
descr->items_size = max_items;
descr->items = item;
}
@ -1713,13 +1714,17 @@ static LRESULT LISTBOX_RemoveItem( LB_DESCR *descr, INT index )
/* Shrink the item array if possible */
max_items = HeapSize( GetProcessHeap(), 0, descr->items ) / sizeof(LB_ITEMDATA);
max_items = descr->items_size;
if (descr->nb_items < max_items - 2*LB_ARRAY_GRANULARITY)
{
max_items -= LB_ARRAY_GRANULARITY;
item = HeapReAlloc( GetProcessHeap(), 0, descr->items,
max_items * sizeof(LB_ITEMDATA) );
if (item) descr->items = item;
if (item)
{
descr->items_size = max_items;
descr->items = item;
}
}
/* Repaint the items */
@ -1765,6 +1770,7 @@ static void LISTBOX_ResetContent( LB_DESCR *descr )
descr->selected_item = -1;
descr->focus_item = 0;
descr->anchor_item = -1;
descr->items_size = 0;
descr->items = NULL;
}
@ -2506,6 +2512,7 @@ static BOOL LISTBOX_Create( HWND hwnd, LPHEADCOMBO lphc )
descr->width = rect.right - rect.left;
descr->height = rect.bottom - rect.top;
descr->items = NULL;
descr->items_size = 0;
descr->nb_items = 0;
descr->top_item = 0;
descr->selected_item = -1;