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comctl32/combo: Implement logic for setting and getting dropdown height. 

Signed-off-by: Fabian Maurer <dark.shadow4@web.de>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Fabian Maurer 2018-08-19 21:03:55 +02:00 committed by Alexandre Julliard
parent 3d0be0bad8
commit 313c63e194
4 changed files with 30 additions and 26 deletions
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43
dlls/comctl32/combo.c
View File

@ -18,10 +18,6 @@
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
* TODO:
* - ComboBox_[GS]etMinVisible()
* - CB_GETMINVISIBLE, CB_SETMINVISIBLE
* - CB_SETTOPINDEX
*/
#include <stdarg.h>
@ -459,6 +455,11 @@ static LRESULT COMBO_Create( HWND hwnd, LPHEADCOMBO lphc, HWND hwndParent, LONG
*/
lphc->wState |= CBF_MEASUREITEM;
/*
* Per default the comctl32 version of combo shows up to 30 items
*/
lphc->visibleItems = 30;
/* M$ IE 3.01 actually creates (and rapidly destroys) an ownerless combobox */
if( lphc->owner || !(style & WS_VISIBLE) )
@ -1010,23 +1011,18 @@ static void CBDropDown( LPHEADCOMBO lphc )
if (nItems > 0)
{
int nHeight;
int nIHeight;
int nIHeight = (int)SendMessageW(lphc->hWndLBox, LB_GETITEMHEIGHT, 0, 0);
nIHeight = (int)SendMessageW(lphc->hWndLBox, LB_GETITEMHEIGHT, 0, 0);
nHeight = nIHeight*nItems;
if (nHeight < nDroppedHeight - COMBO_YBORDERSIZE())
nDroppedHeight = nHeight + COMBO_YBORDERSIZE();
if (nDroppedHeight < nHeight)
{
if (nItems < 5)
nDroppedHeight = (nItems+1)*nIHeight;
else if (nDroppedHeight < 6*nIHeight)
nDroppedHeight = 6*nIHeight;
}
if (lphc->dwStyle & CBS_NOINTEGRALHEIGHT)
{
nDroppedHeight -= 1;
}
else
{
if (nItems > lphc->visibleItems)
nItems = lphc->visibleItems;
nDroppedHeight = nItems * nIHeight + COMBO_YBORDERSIZE();
}
}
r.left = rect.left;
@ -2135,6 +2131,13 @@ static LRESULT CALLBACK COMBO_WindowProc( HWND hwnd, UINT message, WPARAM wParam
return SendMessageW(lphc->hWndEdit, EM_LIMITTEXT, wParam, lParam);
return TRUE;
case CB_GETMINVISIBLE:
return lphc->visibleItems;
case CB_SETMINVISIBLE:
lphc->visibleItems = (INT)wParam;
return TRUE;
default:
if (message >= WM_USER)
WARN("unknown msg WM_USER+%04x wp=%04lx lp=%08lx\n", message - WM_USER, wParam, lParam );

1
dlls/comctl32/comctl32.h
View File

@ -149,6 +149,7 @@ typedef struct
INT fixedOwnerDrawHeight;
INT droppedWidth; /* last two are not used unless set */
INT editHeight; /* explicitly */
INT visibleItems;
} HEADCOMBO, *LPHEADCOMBO;
extern BOOL COMBO_FlipListbox(HEADCOMBO *lphc, BOOL ok, BOOL bRedrawButton) DECLSPEC_HIDDEN;

7
dlls/comctl32/tests/combo.c
View File

@ -1165,7 +1165,7 @@ static void test_combo_dropdown_size(DWORD style)
int limit;
} info_height[] = {
{33, 50, -1},
{35, 50, 40},
{35, 100, 40},
{15, 50, 3},
};
@ -1182,7 +1182,6 @@ static void test_combo_dropdown_size(DWORD style)
info_test->height_combo, hMainWnd, (HMENU)COMBO_ID, NULL, 0);
min_visible_expected = SendMessageA(hCombo, CB_GETMINVISIBLE, 0, 0);
todo_wine
ok(min_visible_expected == 30, "Unexpected number of items %d.\n", min_visible_expected);
cbInfo.cbSize = sizeof(COMBOBOXINFO);
@ -1202,10 +1201,8 @@ static void test_combo_dropdown_size(DWORD style)
min_visible_expected = info_test->limit;
ret = SendMessageA(hCombo, CB_SETMINVISIBLE, min_visible_expected, 0);
todo_wine
ok(ret, "Failed to set visible limit.\n");
min_visible_actual = SendMessageA(hCombo, CB_GETMINVISIBLE, 0, 0);
todo_wine
ok(min_visible_expected == min_visible_actual, "test %d: unexpected number of items %d.\n",
test, min_visible_actual);
}
@ -1242,7 +1239,6 @@ static void test_combo_dropdown_size(DWORD style)
if (expected_height_list < 0)
expected_height_list = 0;
todo_wine
ok(expected_height_list == height_list, "Test %d, expected list height to be %d, got %d\n",
test, expected_height_list, height_list);
}
@ -1250,7 +1246,6 @@ static void test_combo_dropdown_size(DWORD style)
{
expected_height_list = min(info_test->num_items, min_visible_expected) * height_item;
todo_wine
ok(expected_height_list == height_list, "Test %d, expected list height to be %d, got %d\n",
test, expected_height_list, height_list);
}

5
include/commctrl.h
View File

@ -5220,6 +5220,11 @@ static const WCHAR WC_COMBOBOXW[] = { 'C','o','m','b','o','B','o','x',0 };
#define CB_SETCUEBANNER (CBM_FIRST + 3)
#define CB_GETCUEBANNER (CBM_FIRST + 4)
#define ComboBox_GetMinVisible(hwnd) \
((int)SendMessage((hwnd), CB_GETMINVISIBLE, 0, 0))
#define ComboBox_SetMinVisible(hwnd, count) \
((BOOL)SendMessage((hwnd), CB_SETMINVISIBLE, (WPARAM)(count), 0))
/**************************************************************************
* Edit control
*/