[PATCH v7 01/10] comctl32/listbox: Check for out of bounds index using an unsigned index
Needed for LBS_NODATA.
Signed-off-by: Gabriel Ivăncescu gabrielopcode@gmail.com --- dlls/comctl32/listbox.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/dlls/comctl32/listbox.c b/dlls/comctl32/listbox.c index cb645b4..71f1c05 100644 --- a/dlls/comctl32/listbox.c +++ b/dlls/comctl32/listbox.c @@ -489,7 +489,7 @@ static INT LISTBOX_GetItemFromPoint( const LB_DESCR *descr, INT x, INT y ) * Paint an item. */ static void LISTBOX_PaintItem( LB_DESCR *descr, HDC hdc, const RECT *rect, - INT index, UINT action, BOOL ignoreFocus ) + UINT index, UINT action, BOOL ignoreFocus ) { BOOL selected = FALSE, focused; LB_ITEMDATA *item = NULL; @@ -508,7 +508,7 @@ static void LISTBOX_PaintItem( LB_DESCR *descr, HDC hdc, const RECT *rect, RECT r; HRGN hrgn;
- if (!item) + if (index >= descr->nb_items) { if (action == ODA_FOCUS) DrawFocusRect( hdc, rect );
Signed-off-by: Gabriel Ivăncescu gabrielopcode@gmail.com ---
Next patch fixes the return value of InitStorage.
dlls/comctl32/listbox.c | 63 +++++++++++++++-------------------------- 1 file changed, 23 insertions(+), 40 deletions(-)
diff --git a/dlls/comctl32/listbox.c b/dlls/comctl32/listbox.c index 71f1c05..498c549 100644 --- a/dlls/comctl32/listbox.c +++ b/dlls/comctl32/listbox.c @@ -36,12 +36,13 @@ #include "wine/unicode.h" #include "wine/exception.h" #include "wine/debug.h" +#include "wine/heap.h"
#include "comctl32.h"
WINE_DEFAULT_DEBUG_CHANNEL(listbox);
-/* Items array granularity */ +/* Items array granularity (must be power of 2) */ #define LB_ARRAY_GRANULARITY 16
/* Scrolling timeout in ms */ @@ -126,6 +127,25 @@ static TIMER_DIRECTION LISTBOX_Timer = LB_TIMER_NONE;
static LRESULT LISTBOX_GetItemRect( const LB_DESCR *descr, INT index, RECT *rect );
+static BOOL resize_storage(LB_DESCR *descr, UINT items_size) +{ + LB_ITEMDATA *items; + + if (items_size > descr->items_size) + { + items_size = (items_size + LB_ARRAY_GRANULARITY - 1) & ~(LB_ARRAY_GRANULARITY - 1); + items = heap_realloc(descr->items, items_size * sizeof(LB_ITEMDATA)); + if (!items) + { + SEND_NOTIFICATION(descr, LBN_ERRSPACE); + return FALSE; + } + descr->items_size = items_size; + descr->items = items; + } + return TRUE; +} + static BOOL is_item_selected( const LB_DESCR *descr, UINT index ) { return descr->items[index].selected; @@ -684,27 +704,8 @@ static void LISTBOX_DrawFocusRect( LB_DESCR *descr, BOOL on ) */ static LRESULT LISTBOX_InitStorage( LB_DESCR *descr, INT nb_items ) { - LB_ITEMDATA *item; - - nb_items += LB_ARRAY_GRANULARITY - 1; - nb_items -= (nb_items % LB_ARRAY_GRANULARITY); - if (descr->items) { - nb_items += descr->items_size; - item = HeapReAlloc( GetProcessHeap(), 0, descr->items, - nb_items * sizeof(LB_ITEMDATA)); - } - else { - item = HeapAlloc( GetProcessHeap(), 0, - nb_items * sizeof(LB_ITEMDATA)); - } - - if (!item) - { - SEND_NOTIFICATION( descr, LBN_ERRSPACE ); + if (!resize_storage(descr, descr->nb_items + nb_items)) return LB_ERRSPACE; - } - descr->items_size = nb_items; - descr->items = item; return LB_OKAY; }
@@ -1525,29 +1526,11 @@ static LRESULT LISTBOX_InsertItem( LB_DESCR *descr, INT index, LPWSTR str, ULONG_PTR data ) { LB_ITEMDATA *item; - INT max_items; INT oldfocus = descr->focus_item;
if (index == -1) index = descr->nb_items; else if ((index < 0) || (index > descr->nb_items)) return LB_ERR; - if (descr->nb_items == descr->items_size) - { - /* We need to grow the array */ - max_items = descr->items_size + LB_ARRAY_GRANULARITY; - if (descr->items) - item = HeapReAlloc( GetProcessHeap(), 0, descr->items, - max_items * sizeof(LB_ITEMDATA) ); - else - item = HeapAlloc( GetProcessHeap(), 0, - max_items * sizeof(LB_ITEMDATA) ); - if (!item) - { - SEND_NOTIFICATION( descr, LBN_ERRSPACE ); - return LB_ERRSPACE; - } - descr->items_size = max_items; - descr->items = item; - } + if (!resize_storage(descr, descr->nb_items + 1)) return LB_ERR;
/* Insert the item structure */
Signed-off-by: Gabriel Ivăncescu gabrielopcode@gmail.com --- dlls/comctl32/listbox.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/dlls/comctl32/listbox.c b/dlls/comctl32/listbox.c index 498c549..f1ecc52 100644 --- a/dlls/comctl32/listbox.c +++ b/dlls/comctl32/listbox.c @@ -706,7 +706,7 @@ static LRESULT LISTBOX_InitStorage( LB_DESCR *descr, INT nb_items ) { if (!resize_storage(descr, descr->nb_items + nb_items)) return LB_ERRSPACE; - return LB_OKAY; + return descr->items_size; }
Signed-off-by: Gabriel Ivăncescu gabrielopcode@gmail.com --- dlls/comctl32/tests/listbox.c | 64 +++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+)
diff --git a/dlls/comctl32/tests/listbox.c b/dlls/comctl32/tests/listbox.c index e789483..68e4073 100644 --- a/dlls/comctl32/tests/listbox.c +++ b/dlls/comctl32/tests/listbox.c @@ -1906,6 +1906,69 @@ static void test_GetListBoxInfo(void) DestroyWindow(parent); }
+static void test_init_storage( void ) +{ + static const DWORD styles[] = + { + LBS_HASSTRINGS, + LBS_NODATA | LBS_OWNERDRAWFIXED, + }; + HWND parent, listbox; + LONG ret, items_size; + int i, j; + + parent = create_parent(); + for (i = 0; i < ARRAY_SIZE(styles); i++) + { + listbox = CreateWindowA(WC_LISTBOXA, "TestList", styles[i] | WS_CHILD, + 0, 0, 100, 100, parent, (HMENU)ID_LISTBOX, NULL, 0); + + items_size = SendMessageA(listbox, LB_INITSTORAGE, 100, 0); + ok(items_size >= 100, "expected at least 100, got %d\n", items_size); + + ret = SendMessageA(listbox, LB_INITSTORAGE, 0, 0); + ok(ret == items_size, "expected %d, got %d\n", items_size, ret); + + /* it doesn't grow since the space was already reserved */ + ret = SendMessageA(listbox, LB_INITSTORAGE, items_size, 0); + ok(ret == items_size, "expected %d, got %d\n", items_size, ret); + + /* it doesn't shrink the reserved space */ + ret = SendMessageA(listbox, LB_INITSTORAGE, 42, 0); + ok(ret == items_size, "expected %d, got %d\n", items_size, ret); + + /* now populate almost all of it so it's not reserved anymore */ + if (styles[i] & LBS_NODATA) + { + ret = SendMessageA(listbox, LB_SETCOUNT, items_size - 1, 0); + ok(ret == 0, "unexpected return value %d\n", ret); + } + else + { + for (j = 0; j < items_size - 1; j++) + { + ret = SendMessageA(listbox, LB_INSERTSTRING, -1, (LPARAM)""); + ok(ret == j, "expected %d, got %d\n", j, ret); + } + } + + /* we still have one more reserved slot, so it doesn't grow yet */ + ret = SendMessageA(listbox, LB_INITSTORAGE, 1, 0); + ok(ret == items_size, "expected %d, got %d\n", items_size, ret); + + /* fill the slot and check again, it should grow this time */ + ret = SendMessageA(listbox, LB_INSERTSTRING, -1, (LPARAM)""); + ok(ret == items_size - 1, "expected %d, got %d\n", items_size - 1, ret); + ret = SendMessageA(listbox, LB_INITSTORAGE, 0, 0); + ok(ret == items_size, "expected %d, got %d\n", items_size, ret); + ret = SendMessageA(listbox, LB_INITSTORAGE, 1, 0); + ok(ret > items_size, "expected it to grow past %d, got %d\n", items_size, ret); + + DestroyWindow(listbox); + } + DestroyWindow(parent); +} + static void test_missing_lbuttonup(void) { HWND listbox, parent, capture; @@ -2425,6 +2488,7 @@ START_TEST(listbox) test_listbox_LB_DIR(); test_listbox_dlgdir(); test_set_count(); + test_init_storage(); test_GetListBoxInfo(); test_missing_lbuttonup(); test_extents();
Signed-off-by: Gabriel Ivăncescu gabrielopcode@gmail.com --- dlls/comctl32/listbox.c | 22 ++++++---------------- 1 file changed, 6 insertions(+), 16 deletions(-)
diff --git a/dlls/comctl32/listbox.c b/dlls/comctl32/listbox.c index f1ecc52..4ff98d4 100644 --- a/dlls/comctl32/listbox.c +++ b/dlls/comctl32/listbox.c @@ -131,7 +131,8 @@ static BOOL resize_storage(LB_DESCR *descr, UINT items_size) { LB_ITEMDATA *items;
- if (items_size > descr->items_size) + if (items_size > descr->items_size || + items_size + LB_ARRAY_GRANULARITY * 2 < descr->items_size) { items_size = (items_size + LB_ARRAY_GRANULARITY - 1) & ~(LB_ARRAY_GRANULARITY - 1); items = heap_realloc(descr->items, items_size * sizeof(LB_ITEMDATA)); @@ -704,7 +705,9 @@ static void LISTBOX_DrawFocusRect( LB_DESCR *descr, BOOL on ) */ static LRESULT LISTBOX_InitStorage( LB_DESCR *descr, INT nb_items ) { - if (!resize_storage(descr, descr->nb_items + nb_items)) + UINT new_size = descr->nb_items + nb_items; + + if (new_size > descr->items_size && !resize_storage(descr, new_size)) return LB_ERRSPACE; return descr->items_size; } @@ -1666,7 +1669,6 @@ static void LISTBOX_DeleteItem( LB_DESCR *descr, INT index ) static LRESULT LISTBOX_RemoveItem( LB_DESCR *descr, INT index ) { LB_ITEMDATA *item; - INT max_items;
if ((index < 0) || (index >= descr->nb_items)) return LB_ERR;
@@ -1686,20 +1688,8 @@ static LRESULT LISTBOX_RemoveItem( LB_DESCR *descr, INT index ) (descr->nb_items - index) * sizeof(LB_ITEMDATA) ); if (descr->anchor_item == descr->nb_items) descr->anchor_item--;
- /* Shrink the item array if possible */ + resize_storage(descr, descr->nb_items);
- 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_size = max_items; - descr->items = item; - } - } /* Repaint the items */
LISTBOX_UpdateScroll( descr );
Signed-off-by: Gabriel Ivăncescu gabrielopcode@gmail.com ---
This has been carefully done so that it matches the previous behavior when LBS_NODATA was used, since SetCount only works with it (so that means it also implies LBS_OWNERDRAWFIXED and so on).
count was changed to unsigned so that it passes the last test in the patch series, apparently Windows treats it as unsigned.
dlls/comctl32/listbox.c | 45 +++++++++++++++++++++++++++++++---------- 1 file changed, 34 insertions(+), 11 deletions(-)
diff --git a/dlls/comctl32/listbox.c b/dlls/comctl32/listbox.c index 4ff98d4..daeee0d 100644 --- a/dlls/comctl32/listbox.c +++ b/dlls/comctl32/listbox.c @@ -1742,24 +1742,47 @@ static void LISTBOX_ResetContent( LB_DESCR *descr ) /*********************************************************************** * LISTBOX_SetCount */ -static LRESULT LISTBOX_SetCount( LB_DESCR *descr, INT count ) +static LRESULT LISTBOX_SetCount( LB_DESCR *descr, UINT count ) { - LRESULT ret; + UINT orig_num = descr->nb_items;
if (!(descr->style & LBS_NODATA)) return LB_ERR;
- /* FIXME: this is far from optimal... */ - if (count > descr->nb_items) + if (count > orig_num) { - while (count > descr->nb_items) - if ((ret = LISTBOX_InsertString( descr, -1, 0 )) < 0) - return ret; + if (!resize_storage(descr, count)) + return LB_ERRSPACE; + memset(&descr->items[orig_num], 0, (count - orig_num) * sizeof(LB_ITEMDATA)); + descr->nb_items = count; + + LISTBOX_UpdateScroll(descr); + LISTBOX_InvalidateItems(descr, orig_num); + + /* If listbox was empty, set focus to the first item */ + if (orig_num == 0) LISTBOX_SetCaretIndex(descr, 0, FALSE); } - else if (count < descr->nb_items) + else if (count < orig_num) { - while (count < descr->nb_items) - if ((ret = LISTBOX_RemoveItem( descr, (descr->nb_items - 1) )) < 0) - return ret; + LISTBOX_InvalidateItems(descr, count); + descr->nb_items = count; + + if (count == 0) SendMessageW(descr->self, LB_RESETCONTENT, 0, 0); + else + { + descr->anchor_item = min(descr->anchor_item, count - 1); + + resize_storage(descr, count); + if (descr->selected_item >= count) + descr->selected_item = -1; + + LISTBOX_UpdateScroll(descr); + + /* If we removed the scrollbar, reset the top of the list */ + if (count <= descr->page_size && orig_num > descr->page_size) + LISTBOX_SetTopItem(descr, 0, TRUE); + + descr->focus_item = min(descr->focus_item, count - 1); + } }
InvalidateRect( descr->self, NULL, TRUE );
Needed for LBS_NODATA.
Signed-off-by: Gabriel Ivăncescu gabrielopcode@gmail.com --- dlls/comctl32/listbox.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/dlls/comctl32/listbox.c b/dlls/comctl32/listbox.c index daeee0d..0cf61e2 100644 --- a/dlls/comctl32/listbox.c +++ b/dlls/comctl32/listbox.c @@ -149,6 +149,8 @@ static BOOL resize_storage(LB_DESCR *descr, UINT items_size)
static BOOL is_item_selected( const LB_DESCR *descr, UINT index ) { + if (!(descr->style & (LBS_MULTIPLESEL | LBS_EXTENDEDSEL))) + return index == descr->selected_item; return descr->items[index].selected; }
Signed-off-by: Gabriel Ivăncescu gabrielopcode@gmail.com --- dlls/comctl32/tests/listbox.c | 130 ++++++++++++++++++++++++++++++++++ 1 file changed, 130 insertions(+)
diff --git a/dlls/comctl32/tests/listbox.c b/dlls/comctl32/tests/listbox.c index 68e4073..0cdcdea 100644 --- a/dlls/comctl32/tests/listbox.c +++ b/dlls/comctl32/tests/listbox.c @@ -784,6 +784,135 @@ static void test_listbox_height(void) DestroyWindow( hList ); }
+static void test_changing_selection_styles(void) +{ + static const DWORD styles[] = + { + 0, + LBS_NODATA | LBS_OWNERDRAWFIXED + }; + static const DWORD selstyles[] = + { + 0, + LBS_MULTIPLESEL, + LBS_EXTENDEDSEL, + LBS_MULTIPLESEL | LBS_EXTENDEDSEL + }; + static const LONG selexpect_single[] = { 0, 0, 1 }; + static const LONG selexpect_single2[] = { 1, 0, 0 }; + static const LONG selexpect_multi[] = { 1, 0, 1 }; + static const LONG selexpect_multi2[] = { 1, 1, 0 }; + + HWND parent, listbox; + DWORD style; + LONG ret; + UINT i, j, k; + + parent = create_parent(); + ok(parent != NULL, "Failed to create parent window.\n"); + for (i = 0; i < ARRAY_SIZE(styles); i++) + { + /* Test if changing selection styles affects selection storage */ + for (j = 0; j < ARRAY_SIZE(selstyles); j++) + { + LONG setcursel_expect, selitemrange_expect, getselcount_expect; + const LONG *selexpect; + + listbox = CreateWindowA(WC_LISTBOXA, "TestList", styles[i] | selstyles[j] | WS_CHILD | WS_VISIBLE, + 0, 0, 100, 100, parent, (HMENU)ID_LISTBOX, NULL, 0); + ok(listbox != NULL, "%u: Failed to create ListBox window.\n", j); + + if (selstyles[j] & (LBS_MULTIPLESEL | LBS_EXTENDEDSEL)) + { + setcursel_expect = LB_ERR; + selitemrange_expect = LB_OKAY; + getselcount_expect = 2; + selexpect = selexpect_multi; + } + else + { + setcursel_expect = 2; + selitemrange_expect = LB_ERR; + getselcount_expect = LB_ERR; + selexpect = selexpect_single; + } + + for (k = 0; k < ARRAY_SIZE(selexpect_multi); k++) + { + ret = SendMessageA(listbox, LB_INSERTSTRING, -1, (LPARAM)"x"); + ok(ret == k, "%u: Unexpected return value %d, expected %d.\n", j, ret, k); + } + ret = SendMessageA(listbox, LB_GETCOUNT, 0, 0); + ok(ret == ARRAY_SIZE(selexpect_multi), "%u: Unexpected count %d.\n", j, ret); + + /* Select items with different methods */ + ret = SendMessageA(listbox, LB_SETCURSEL, 2, 0); + ok(ret == setcursel_expect, "%u: Unexpected return value %d.\n", j, ret); + ret = SendMessageA(listbox, LB_SELITEMRANGE, TRUE, MAKELPARAM(0, 0)); + ok(ret == selitemrange_expect, "%u: Unexpected return value %d.\n", j, ret); + ret = SendMessageA(listbox, LB_SELITEMRANGE, TRUE, MAKELPARAM(2, 2)); + ok(ret == selitemrange_expect, "%u: Unexpected return value %d.\n", j, ret); + + /* Verify that the proper items are selected */ + for (k = 0; k < ARRAY_SIZE(selexpect_multi); k++) + { + ret = SendMessageA(listbox, LB_GETSEL, k, 0); + ok(ret == selexpect[k], "%u: Unexpected selection state %d, expected %d.\n", + j, ret, selexpect[k]); + } + + /* Now change the selection style */ + style = GetWindowLongA(listbox, GWL_STYLE); + ok((style & (LBS_MULTIPLESEL | LBS_EXTENDEDSEL)) == selstyles[j], + "%u: unexpected window styles %#x.\n", j, style); + if (selstyles[j] & (LBS_MULTIPLESEL | LBS_EXTENDEDSEL)) + style &= ~selstyles[j]; + else + style |= LBS_MULTIPLESEL | LBS_EXTENDEDSEL; + SetWindowLongA(listbox, GWL_STYLE, style); + style = GetWindowLongA(listbox, GWL_STYLE); + ok(!(style & selstyles[j]), "%u: unexpected window styles %#x.\n", j, style); + + /* Verify that the same items are selected */ + ret = SendMessageA(listbox, LB_GETSELCOUNT, 0, 0); + ok(ret == getselcount_expect, "%u: expected %d from LB_GETSELCOUNT, got %d\n", + j, getselcount_expect, ret); + + for (k = 0; k < ARRAY_SIZE(selexpect_multi); k++) + { + ret = SendMessageA(listbox, LB_GETSEL, k, 0); + ok(ret == selexpect[k], "%u: Unexpected selection state %d, expected %d.\n", + j, ret, selexpect[k]); + } + + /* Lastly see if we can still change the selection as before with old style */ + if (setcursel_expect != LB_ERR) setcursel_expect = 0; + ret = SendMessageA(listbox, LB_SETCURSEL, 0, 0); + ok(ret == setcursel_expect, "%u: Unexpected return value %d.\n", j, ret); + ret = SendMessageA(listbox, LB_SELITEMRANGE, TRUE, MAKELPARAM(1, 1)); + ok(ret == selitemrange_expect, "%u: Unexpected return value %d.\n", j, ret); + ret = SendMessageA(listbox, LB_SELITEMRANGE, FALSE, MAKELPARAM(2, 2)); + ok(ret == selitemrange_expect, "%u: Unexpected return value %d.\n", j, ret); + + /* And verify the selections */ + selexpect = (selstyles[j] & (LBS_MULTIPLESEL | LBS_EXTENDEDSEL)) ? selexpect_multi2 : selexpect_single2; + ret = SendMessageA(listbox, LB_GETSELCOUNT, 0, 0); + ok(ret == getselcount_expect, "%u: expected %d from LB_GETSELCOUNT, got %d\n", + j, getselcount_expect, ret); + + for (k = 0; k < ARRAY_SIZE(selexpect_multi); k++) + { + ret = SendMessageA(listbox, LB_GETSEL, k, 0); + ok(ret == selexpect[k], "%u: Unexpected selection state %d, expected %d.\n", + j, ret, selexpect[k]); + } + + DestroyWindow(listbox); + } + } + DestroyWindow(parent); +} + static void test_itemfrompoint(void) { /* WS_POPUP is required in order to have a more accurate size calculation ( @@ -2483,6 +2612,7 @@ START_TEST(listbox) test_LB_SELITEMRANGE(); test_LB_SETCURSEL(); test_listbox_height(); + test_changing_selection_styles(); test_itemfrompoint(); test_listbox_item_data(); test_listbox_LB_DIR();
The LBS_NODATA style's purpose is to drastically improve performance and memory usage on very large lists, since they should function as virtual lists. Thus, don't store any data for single-selection listboxes (descr->items always NULL).
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=32374 Signed-off-by: Gabriel Ivăncescu gabrielopcode@gmail.com ---
Most of the changes are just indentation in InsertItem/RemoveItem. The rest are needed to solve subtle bugs (and because we have to special-case single-selection LBS_NODATA listboxes for storing no data).
Few extra changes due to InitStorage changes/tests prior patches.
dlls/comctl32/listbox.c | 140 ++++++++++++++++++++++++++-------------- 1 file changed, 90 insertions(+), 50 deletions(-)
diff --git a/dlls/comctl32/listbox.c b/dlls/comctl32/listbox.c index 0cf61e2..6459d9c 100644 --- a/dlls/comctl32/listbox.c +++ b/dlls/comctl32/listbox.c @@ -19,7 +19,7 @@ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA * * TODO: - * - LBS_NODATA + * - LBS_NODATA for multi-selection listboxes */
#include <string.h> @@ -154,6 +154,12 @@ static BOOL is_item_selected( const LB_DESCR *descr, UINT index ) return descr->items[index].selected; }
+static BOOL is_singlesel_NODATA(const LB_DESCR *descr) +{ + return (descr->style & LBS_NODATA) && + !(descr->style & (LBS_MULTIPLESEL | LBS_EXTENDEDSEL)); +} + /*********************************************************************** * LISTBOX_GetCurrentPageSize * @@ -547,6 +553,7 @@ static void LISTBOX_PaintItem( LB_DESCR *descr, HDC hdc, const RECT *rect, GetClientRect(descr->self, &r); hrgn = set_control_clipping( hdc, &r );
+ if (is_singlesel_NODATA(descr)) item = NULL; dis.CtlType = ODT_LISTBOX; dis.CtlID = GetWindowLongPtrW( descr->self, GWLP_ID ); dis.hwndItem = descr->self; @@ -709,8 +716,15 @@ static LRESULT LISTBOX_InitStorage( LB_DESCR *descr, INT nb_items ) { UINT new_size = descr->nb_items + nb_items;
- if (new_size > descr->items_size && !resize_storage(descr, new_size)) - return LB_ERRSPACE; + /* Windows keeps track of (unaligned) reserved space + for LBS_NODATA, despite the fact it is useless */ + if (new_size > descr->items_size) + { + if (is_singlesel_NODATA(descr)) + descr->items_size = new_size; + else if (!resize_storage(descr, new_size)) + return LB_ERRSPACE; + } return descr->items_size; }
@@ -1460,10 +1474,13 @@ static LRESULT LISTBOX_SetSelection( LB_DESCR *descr, INT index, { INT oldsel = descr->selected_item; if (index == oldsel) return LB_OKAY; - if (oldsel != -1) descr->items[oldsel].selected = FALSE; - if (index != -1) descr->items[index].selected = TRUE; - if (oldsel != -1) LISTBOX_RepaintItem( descr, oldsel, ODA_SELECT ); + if (!(descr->style & LBS_NODATA)) + { + if (oldsel != -1) descr->items[oldsel].selected = FALSE; + if (index != -1) descr->items[index].selected = TRUE; + } descr->selected_item = index; + if (oldsel != -1) LISTBOX_RepaintItem( descr, oldsel, ODA_SELECT ); if (index != -1) LISTBOX_RepaintItem( descr, index, ODA_SELECT ); if (send_notify && descr->nb_items) SEND_NOTIFICATION( descr, (index != -1) ? LBN_SELCHANGE : LBN_SELCANCEL ); @@ -1535,36 +1552,42 @@ 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 (!resize_storage(descr, descr->nb_items + 1)) return LB_ERR; - - /* Insert the item structure */ - - item = &descr->items[index]; - if (index < descr->nb_items) - RtlMoveMemory( item + 1, item, - (descr->nb_items - index) * sizeof(LB_ITEMDATA) ); - item->str = str; - item->data = HAS_STRINGS(descr) ? 0 : data; - item->height = 0; - item->selected = FALSE; - descr->nb_items++; - - /* Get item height */ - - if (descr->style & LBS_OWNERDRAWVARIABLE) + if (is_singlesel_NODATA(descr)) { - MEASUREITEMSTRUCT mis; - UINT id = (UINT)GetWindowLongPtrW( descr->self, GWLP_ID ); + descr->nb_items++; + descr->items_size = max(descr->items_size, descr->nb_items); + } + else + { + if (!resize_storage(descr, descr->nb_items + 1)) return LB_ERR; + + /* Insert the item structure */ + item = &descr->items[index]; + if (index < descr->nb_items) + RtlMoveMemory( item + 1, item, + (descr->nb_items - index) * sizeof(LB_ITEMDATA) ); + item->str = str; + item->data = HAS_STRINGS(descr) ? 0 : data; + item->height = 0; + item->selected = FALSE; + descr->nb_items++; + + /* Get item height */ + if (descr->style & LBS_OWNERDRAWVARIABLE) + { + MEASUREITEMSTRUCT mis; + UINT id = (UINT)GetWindowLongPtrW( descr->self, GWLP_ID );
- mis.CtlType = ODT_LISTBOX; - mis.CtlID = id; - mis.itemID = index; - mis.itemData = data; - mis.itemHeight = descr->item_height; - SendMessageW( descr->owner, WM_MEASUREITEM, id, (LPARAM)&mis ); - item->height = mis.itemHeight ? mis.itemHeight : 1; - TRACE("[%p]: measure item %d (%s) = %d\n", - descr->self, index, str ? debugstr_w(str) : "", item->height ); + mis.CtlType = ODT_LISTBOX; + mis.CtlID = id; + mis.itemID = index; + mis.itemData = data; + mis.itemHeight = descr->item_height; + SendMessageW( descr->owner, WM_MEASUREITEM, id, (LPARAM)&mis ); + item->height = mis.itemHeight ? mis.itemHeight : 1; + TRACE("[%p]: measure item %d (%s) = %d\n", + descr->self, index, str ? debugstr_w(str) : "", item->height ); + } }
/* Repaint the items */ @@ -1678,19 +1701,29 @@ static LRESULT LISTBOX_RemoveItem( LB_DESCR *descr, INT index ) LISTBOX_InvalidateItems( descr, index );
descr->nb_items--; - LISTBOX_DeleteItem( descr, index ); - - if (!descr->nb_items) return LB_OKAY; + if (is_singlesel_NODATA(descr)) + { + if (!descr->nb_items) + { + SendMessageW(descr->self, LB_RESETCONTENT, 0, 0); + return LB_OKAY; + } + } + else + { + LISTBOX_DeleteItem( descr, index );
- /* Remove the item */ + if (!descr->nb_items) return LB_OKAY;
- item = &descr->items[index]; - if (index < descr->nb_items) - RtlMoveMemory( item, item + 1, - (descr->nb_items - index) * sizeof(LB_ITEMDATA) ); - if (descr->anchor_item == descr->nb_items) descr->anchor_item--; + /* Remove the item */ + item = &descr->items[index]; + if (index < descr->nb_items) + RtlMoveMemory( item, item + 1, + (descr->nb_items - index) * sizeof(LB_ITEMDATA) );
- resize_storage(descr, descr->nb_items); + resize_storage(descr, descr->nb_items); + } + descr->anchor_item = min(descr->anchor_item, descr->nb_items - 1);
/* Repaint the items */
@@ -1729,7 +1762,8 @@ static void LISTBOX_ResetContent( LB_DESCR *descr ) { INT i;
- for(i = descr->nb_items - 1; i>=0; i--) LISTBOX_DeleteItem( descr, i); + if (descr->items) + for (i = descr->nb_items - 1; i >= 0; i--) LISTBOX_DeleteItem(descr, i); HeapFree( GetProcessHeap(), 0, descr->items ); descr->nb_items = 0; descr->top_item = 0; @@ -1752,9 +1786,14 @@ static LRESULT LISTBOX_SetCount( LB_DESCR *descr, UINT count )
if (count > orig_num) { - if (!resize_storage(descr, count)) - return LB_ERRSPACE; - memset(&descr->items[orig_num], 0, (count - orig_num) * sizeof(LB_ITEMDATA)); + if (descr->style & (LBS_MULTIPLESEL | LBS_EXTENDEDSEL)) + { + if (!resize_storage(descr, count)) + return LB_ERRSPACE; + memset(&descr->items[orig_num], 0, (count - orig_num) * sizeof(LB_ITEMDATA)); + } + else + descr->items_size = max(descr->items_size, count); descr->nb_items = count;
LISTBOX_UpdateScroll(descr); @@ -1773,8 +1812,9 @@ static LRESULT LISTBOX_SetCount( LB_DESCR *descr, UINT count ) { descr->anchor_item = min(descr->anchor_item, count - 1);
- resize_storage(descr, count); - if (descr->selected_item >= count) + if (descr->style & (LBS_MULTIPLESEL | LBS_EXTENDEDSEL)) + resize_storage(descr, count); + else if (descr->selected_item >= descr->nb_items) descr->selected_item = -1;
LISTBOX_UpdateScroll(descr);
Signed-off-by: Gabriel Ivăncescu gabrielopcode@gmail.com --- dlls/comctl32/tests/listbox.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/dlls/comctl32/tests/listbox.c b/dlls/comctl32/tests/listbox.c index 0cdcdea..de73ad2 100644 --- a/dlls/comctl32/tests/listbox.c +++ b/dlls/comctl32/tests/listbox.c @@ -1996,6 +1996,11 @@ static void test_set_count( void ) GetUpdateRect( listbox, &r, TRUE ); ok( !IsRectEmpty( &r ), "got empty rect\n");
+ ret = SendMessageA( listbox, LB_SETCOUNT, -5, 0 ); + ok( ret == 0, "got %d\n", ret ); + ret = SendMessageA( listbox, LB_GETCOUNT, 0, 0 ); + ok( ret == -5, "got %d\n", ret ); + DestroyWindow( listbox );
for (i = 0; i < ARRAY_SIZE(styles); ++i)
-
Gabriel Ivăncescu