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[COMCTL32] Combobox Implement logic for set and get dropdown height CORE-15833

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by import of Wine commit
313c63e194
merged from current Wine head.

Thanks to patches author Fabian Maurer
and also Doug Lyons for tests and adding initial the merge-patch.
This commit is contained in:
Joachim Henze 2019-03-16 02:11:00 +01:00
parent 05886b83e9
commit e3e173ffaa
2 changed files with 24 additions and 20 deletions
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43
dll/win32/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
dll/win32/comctl32/comctl32.h
View file

@ -147,6 +147,7 @@ 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;