2 * Undocumented functions from COMCTL32.DLL
4 * Copyright 1998 Eric Kohl
5 * 1998 Juergen Schmied <j.schmied@metronet.de>
6 * 2000 Eric Kohl for CodeWeavers
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * All of these functions are UNDOCUMENTED!! And I mean UNDOCUMENTED!!!!
24 * Do NOT rely on names or contents of undocumented structures and types!!!
25 * These functions are used by EXPLORER.EXE, IEXPLORE.EXE and
26 * COMCTL32.DLL (internally).
30 #include "wine/port.h"
38 #define NONAMELESSUNION
39 #define NONAMELESSSTRUCT
51 #include "wine/unicode.h"
54 #include "wine/debug.h"
56 WINE_DEFAULT_DEBUG_CHANNEL(commctrl);
58 static const WCHAR strMRUList[] = { 'M','R','U','L','i','s','t',0 };
60 /**************************************************************************
63 * Allocates memory block from the dll's private heap
66 * dwSize [I] size of the allocated memory block
69 * Success: pointer to allocated memory block
72 LPVOID WINAPI Alloc (DWORD dwSize)
74 return LocalAlloc( LMEM_ZEROINIT, dwSize );
78 /**************************************************************************
79 * ReAlloc [COMCTL32.72]
81 * Changes the size of an allocated memory block or allocates a memory
82 * block using the dll's private heap.
85 * lpSrc [I] pointer to memory block which will be resized
86 * dwSize [I] new size of the memory block.
89 * Success: pointer to the resized memory block
93 * If lpSrc is a NULL-pointer, then ReAlloc allocates a memory
96 LPVOID WINAPI ReAlloc (LPVOID lpSrc, DWORD dwSize)
99 return LocalReAlloc( lpSrc, dwSize, LMEM_ZEROINIT | LMEM_MOVEABLE );
101 return LocalAlloc( LMEM_ZEROINIT, dwSize);
105 /**************************************************************************
108 * Frees an allocated memory block from the dll's private heap.
111 * lpMem [I] pointer to memory block which will be freed
117 BOOL WINAPI Free (LPVOID lpMem)
119 return !LocalFree( lpMem );
123 /**************************************************************************
124 * GetSize [COMCTL32.74]
126 * Retrieves the size of the specified memory block from the dll's
130 * lpMem [I] pointer to an allocated memory block
133 * Success: size of the specified memory block
136 DWORD WINAPI GetSize (LPVOID lpMem)
138 return LocalSize( lpMem );
142 /**************************************************************************
143 * MRU-Functions {COMCTL32}
146 * The MRU-Api is a set of functions to manipulate lists of M.R.U. (Most Recently
147 * Used) items. It is an undocumented Api that is used (at least) by the shell
148 * and explorer to implement their recent documents feature.
150 * Since these functions are undocumented, they are unsupported by MS and
151 * may change at any time.
153 * Internally, the list is implemented as a last in, last out list of items
154 * persisted into the system registry under a caller chosen key. Each list
155 * item is given a one character identifier in the Ascii range from 'a' to
156 * '}'. A list of the identifiers in order from newest to oldest is stored
157 * under the same key in a value named "MRUList".
159 * Items are re-ordered by changing the order of the values in the MRUList
160 * value. When a new item is added, it becomes the new value of the oldest
161 * identifier, and that identifier is moved to the front of the MRUList value.
163 * Wine stores MRU-lists in the same registry format as Windows, so when
164 * switching between the builtin and native comctl32.dll no problems or
165 * incompatibilities should occur.
167 * The following undocumented structure is used to create an MRU-list:
168 *|typedef INT (CALLBACK *MRUStringCmpFn)(LPCTSTR lhs, LPCTSTR rhs);
169 *|typedef INT (CALLBACK *MRUBinaryCmpFn)(LPCVOID lhs, LPCVOID rhs, DWORD length);
171 *|typedef struct tagCREATEMRULIST
177 *| LPCTSTR lpszSubKey;
179 *|} CREATEMRULIST, *LPCREATEMRULIST;
182 * cbSize [I] The size of the CREATEMRULIST structure. This must be set
183 * to sizeof(CREATEMRULIST) by the caller.
184 * nMaxItems [I] The maximum number of items allowed in the list. Because
185 * of the limited number of identifiers, this should be set to
186 * a value from 1 to 30 by the caller.
187 * dwFlags [I] If bit 0 is set, the list will be used to store binary
188 * data, otherwise it is assumed to store strings. If bit 1
189 * is set, every change made to the list will be reflected in
190 * the registry immediately, otherwise changes will only be
191 * written when the list is closed.
192 * hKey [I] The registry key that the list should be written under.
193 * This must be supplied by the caller.
194 * lpszSubKey [I] A caller supplied name of a subkey under hKey to write
195 * the list to. This may not be blank.
196 * lpfnCompare [I] A caller supplied comparison function, which may be either
197 * an MRUStringCmpFn if dwFlags does not have bit 0 set, or a
198 * MRUBinaryCmpFn otherwise.
201 * - Create an MRU-list with CreateMRUList() or CreateMRUListLazy().
202 * - Add items to an MRU-list with AddMRUString() or AddMRUData().
203 * - Remove items from an MRU-list with DelMRUString().
204 * - Find data in an MRU-list with FindMRUString() or FindMRUData().
205 * - Iterate through an MRU-list with EnumMRUList().
206 * - Free an MRU-list with FreeMRUList().
209 typedef struct tagCREATEMRULISTA
217 } CREATEMRULISTA, *LPCREATEMRULISTA;
219 typedef struct tagCREATEMRULISTW
227 } CREATEMRULISTW, *LPCREATEMRULISTW;
230 #define MRUF_STRING_LIST 0 /* list will contain strings */
231 #define MRUF_BINARY_LIST 1 /* list will contain binary data */
232 #define MRUF_DELAYED_SAVE 2 /* only save list order to reg. is FreeMRUList */
234 /* If list is a string list lpfnCompare has the following prototype
235 * int CALLBACK MRUCompareString(LPCSTR s1, LPCSTR s2)
236 * for binary lists the prototype is
237 * int CALLBACK MRUCompareBinary(LPCVOID data1, LPCVOID data2, DWORD cbData)
238 * where cbData is the no. of bytes to compare.
239 * Need to check what return value means identical - 0?
242 typedef struct tagWINEMRUITEM
244 DWORD size; /* size of data stored */
245 DWORD itemFlag; /* flags */
247 } WINEMRUITEM, *LPWINEMRUITEM;
250 #define WMRUIF_CHANGED 0x0001 /* this dataitem changed */
252 typedef struct tagWINEMRULIST
254 CREATEMRULISTW extview; /* original create information */
255 BOOL isUnicode; /* is compare fn Unicode */
256 DWORD wineFlags; /* internal flags */
257 DWORD cursize; /* current size of realMRU */
258 LPWSTR realMRU; /* pointer to string of index names */
259 LPWINEMRUITEM *array; /* array of pointers to data */
260 /* in 'a' to 'z' order */
261 } WINEMRULIST, *LPWINEMRULIST;
264 #define WMRUF_CHANGED 0x0001 /* MRU list has changed */
266 /**************************************************************************
267 * MRU_SaveChanged (internal)
269 * Local MRU saving code
271 static void MRU_SaveChanged ( LPWINEMRULIST mp )
278 /* or should we do the following instead of RegOpenKeyEx:
281 /* open the sub key */
282 if ((err = RegOpenKeyExW( mp->extview.hKey, mp->extview.lpszSubKey,
283 0, KEY_WRITE, &newkey))) {
284 /* not present - what to do ??? */
285 ERR("Could not open key, error=%d, attempting to create\n",
287 if ((err = RegCreateKeyExW( mp->extview.hKey, mp->extview.lpszSubKey,
290 REG_OPTION_NON_VOLATILE,
291 KEY_READ | KEY_WRITE,
295 ERR("failed to create key /%s/, err=%d\n",
296 debugstr_w(mp->extview.lpszSubKey), err);
300 if (mp->wineFlags & WMRUF_CHANGED) {
301 mp->wineFlags &= ~WMRUF_CHANGED;
302 err = RegSetValueExW(newkey, strMRUList, 0, REG_SZ, (LPBYTE)mp->realMRU,
303 (strlenW(mp->realMRU) + 1)*sizeof(WCHAR));
305 ERR("error saving MRUList, err=%d\n", err);
307 TRACE("saving MRUList=/%s/\n", debugstr_w(mp->realMRU));
310 for(i=0; i<mp->cursize; i++) {
311 witem = mp->array[i];
312 if (witem->itemFlag & WMRUIF_CHANGED) {
313 witem->itemFlag &= ~WMRUIF_CHANGED;
314 realname[0] = 'a' + i;
315 err = RegSetValueExW(newkey, realname, 0,
316 (mp->extview.dwFlags & MRUF_BINARY_LIST) ?
318 &witem->datastart, witem->size);
320 ERR("error saving /%s/, err=%d\n", debugstr_w(realname), err);
322 TRACE("saving value for name /%s/ size=%ld\n",
323 debugstr_w(realname), witem->size);
326 RegCloseKey( newkey );
329 /**************************************************************************
330 * FreeMRUList [COMCTL32.152]
332 * Frees a most-recently-used items list.
335 * hMRUList [I] Handle to list.
340 void WINAPI FreeMRUList (HANDLE hMRUList)
342 LPWINEMRULIST mp = (LPWINEMRULIST)hMRUList;
345 TRACE("(%p)\n", hMRUList);
349 if (mp->wineFlags & WMRUF_CHANGED) {
350 /* need to open key and then save the info */
351 MRU_SaveChanged( mp );
354 for(i=0; i<mp->extview.nMaxItems; i++) {
360 Free((LPWSTR)mp->extview.lpszSubKey);
365 /**************************************************************************
366 * FindMRUData [COMCTL32.169]
368 * Searches binary list for item that matches lpData of length cbData.
369 * Returns position in list order 0 -> MRU and if lpRegNum != NULL then value
370 * corresponding to item's reg. name will be stored in it ('a' -> 0).
373 * hList [I] list handle
374 * lpData [I] data to find
375 * cbData [I] length of data
376 * lpRegNum [O] position in registry (maybe NULL)
379 * Position in list 0 -> MRU. -1 if item not found.
381 INT WINAPI FindMRUData (HANDLE hList, LPCVOID lpData, DWORD cbData,
384 LPWINEMRULIST mp = (LPWINEMRULIST)hList;
389 if (!mp->extview.lpfnCompare)
392 if(!(mp->extview.dwFlags & MRUF_BINARY_LIST) && !mp->isUnicode) {
393 DWORD len = WideCharToMultiByte(CP_ACP, 0, lpData, -1,
394 NULL, 0, NULL, NULL);
396 WideCharToMultiByte(CP_ACP, 0, lpData, -1, dataA, len, NULL, NULL);
399 for(i=0; i<mp->cursize; i++) {
400 if (mp->extview.dwFlags & MRUF_BINARY_LIST) {
401 if (!mp->extview.lpfnCompare(lpData, &mp->array[i]->datastart,
407 if (!mp->extview.lpfnCompare(lpData, &mp->array[i]->datastart))
410 DWORD len = WideCharToMultiByte(CP_ACP, 0,
411 (LPWSTR)&mp->array[i]->datastart, -1,
412 NULL, 0, NULL, NULL);
413 LPSTR itemA = Alloc(len);
415 WideCharToMultiByte(CP_ACP, 0, (LPWSTR)&mp->array[i]->datastart, -1,
416 itemA, len, NULL, NULL);
418 cmp = mp->extview.lpfnCompare(dataA, itemA);
431 if (lpRegNum && (ret != -1))
434 TRACE("(%p, %p, %ld, %p) returning %d\n",
435 hList, lpData, cbData, lpRegNum, ret);
441 /**************************************************************************
442 * AddMRUData [COMCTL32.167]
444 * Add item to MRU binary list. If item already exists in list then it is
445 * simply moved up to the top of the list and not added again. If list is
446 * full then the least recently used item is removed to make room.
449 * hList [I] Handle to list.
450 * lpData [I] ptr to data to add.
451 * cbData [I] no. of bytes of data.
454 * No. corresponding to registry name where value is stored 'a' -> 0 etc.
457 INT WINAPI AddMRUData (HANDLE hList, LPCVOID lpData, DWORD cbData)
459 LPWINEMRULIST mp = (LPWINEMRULIST)hList;
463 if ((replace = FindMRUData (hList, lpData, cbData, NULL)) >= 0) {
464 /* Item exists, just move it to the front */
465 LPWSTR pos = strchrW(mp->realMRU, replace + 'a');
466 while (pos > mp->realMRU)
473 /* either add a new entry or replace oldest */
474 if (mp->cursize < mp->extview.nMaxItems) {
475 /* Add in a new item */
476 replace = mp->cursize;
480 /* get the oldest entry and replace data */
481 replace = mp->realMRU[mp->cursize - 1] - 'a';
482 Free(mp->array[replace]);
485 /* Allocate space for new item and move in the data */
486 mp->array[replace] = witem = Alloc(cbData + sizeof(WINEMRUITEM));
487 witem->itemFlag |= WMRUIF_CHANGED;
488 witem->size = cbData;
489 memcpy( &witem->datastart, lpData, cbData);
491 /* now rotate MRU list */
492 for(i=mp->cursize-1; i>=1; i--)
493 mp->realMRU[i] = mp->realMRU[i-1];
496 /* The new item gets the front spot */
497 mp->wineFlags |= WMRUF_CHANGED;
498 mp->realMRU[0] = replace + 'a';
500 TRACE("(%p, %p, %ld) adding data, /%c/ now most current\n",
501 hList, lpData, cbData, replace+'a');
503 if (!(mp->extview.dwFlags & MRUF_DELAYED_SAVE)) {
504 /* save changed stuff right now */
505 MRU_SaveChanged( mp );
511 /**************************************************************************
512 * AddMRUStringW [COMCTL32.401]
514 * Add an item to an MRU string list.
517 * hList [I] Handle to list.
518 * lpszString [I] The string to add.
521 * Success: The number corresponding to the registry name where the string
522 * has been stored (0 maps to 'a', 1 to 'b' and so on).
523 * Failure: -1, if hList is NULL or memory allocation fails. If lpszString
524 * is invalid, the function returns 0, and GetLastError() returns
525 * ERROR_INVALID_PARAMETER. The last error value is set only in
529 * -If lpszString exists in the list already, it is moved to the top of the
530 * MRU list (it is not duplicated).
531 * -If the list is full the least recently used list entry is replaced with
533 * -If this function returns 0 you should check the last error value to
534 * ensure the call really succeeded.
536 INT WINAPI AddMRUStringW(HANDLE hList, LPCWSTR lpszString)
538 TRACE("(%p,%s)\n", hList, debugstr_w(lpszString));
543 if (!lpszString || IsBadStringPtrW(lpszString, -1))
545 SetLastError(ERROR_INVALID_PARAMETER);
549 return AddMRUData(hList, lpszString,
550 (strlenW(lpszString) + 1) * sizeof(WCHAR));
553 /**************************************************************************
554 * AddMRUStringA [COMCTL32.153]
558 INT WINAPI AddMRUStringA(HANDLE hList, LPCSTR lpszString)
564 TRACE("(%p,%s)\n", hList, debugstr_a(lpszString));
569 if (IsBadStringPtrA(lpszString, -1))
571 SetLastError(ERROR_INVALID_PARAMETER);
575 len = MultiByteToWideChar(CP_ACP, 0, lpszString, -1, NULL, 0) * sizeof(WCHAR);
576 stringW = Alloc(len);
580 MultiByteToWideChar(CP_ACP, 0, lpszString, -1, stringW, len/sizeof(WCHAR));
581 ret = AddMRUData(hList, stringW, len);
586 /**************************************************************************
587 * DelMRUString [COMCTL32.156]
589 * Removes item from either string or binary list (despite its name)
592 * hList [I] list handle
593 * nItemPos [I] item position to remove 0 -> MRU
596 * TRUE if successful, FALSE if nItemPos is out of range.
598 BOOL WINAPI DelMRUString(HANDLE hList, INT nItemPos)
600 FIXME("(%p, %d): stub\n", hList, nItemPos);
604 /**************************************************************************
605 * FindMRUStringW [COMCTL32.402]
607 * See FindMRUStringA.
609 INT WINAPI FindMRUStringW (HANDLE hList, LPCWSTR lpszString, LPINT lpRegNum)
611 return FindMRUData(hList, lpszString,
612 (lstrlenW(lpszString) + 1) * sizeof(WCHAR), lpRegNum);
615 /**************************************************************************
616 * FindMRUStringA [COMCTL32.155]
618 * Searches string list for item that matches lpszString.
619 * Returns position in list order 0 -> MRU and if lpRegNum != NULL then value
620 * corresponding to item's reg. name will be stored in it ('a' -> 0).
623 * hList [I] list handle
624 * lpszString [I] string to find
625 * lpRegNum [O] position in registry (maybe NULL)
628 * Position in list 0 -> MRU. -1 if item not found.
630 INT WINAPI FindMRUStringA (HANDLE hList, LPCSTR lpszString, LPINT lpRegNum)
632 DWORD len = MultiByteToWideChar(CP_ACP, 0, lpszString, -1, NULL, 0);
633 LPWSTR stringW = Alloc(len * sizeof(WCHAR));
636 MultiByteToWideChar(CP_ACP, 0, lpszString, -1, stringW, len);
637 ret = FindMRUData(hList, stringW, len * sizeof(WCHAR), lpRegNum);
642 /*************************************************************************
643 * CreateMRUListLazy_common (internal)
645 static HANDLE CreateMRUListLazy_common(LPWINEMRULIST mp)
649 DWORD datasize, dwdisp;
654 /* get space to save indices that will turn into names
655 * but in order of most to least recently used
657 mp->realMRU = Alloc((mp->extview.nMaxItems + 2) * sizeof(WCHAR));
659 /* get space to save pointers to actual data in order of
660 * 'a' to 'z' (0 to n).
662 mp->array = Alloc(mp->extview.nMaxItems * sizeof(LPVOID));
664 /* open the sub key */
665 if ((err = RegCreateKeyExW( mp->extview.hKey, mp->extview.lpszSubKey,
668 REG_OPTION_NON_VOLATILE,
669 KEY_READ | KEY_WRITE,
673 /* error - what to do ??? */
674 ERR("(%lu %lu %lx %p %s %p): Could not open key, error=%d\n",
675 mp->extview.cbSize, mp->extview.nMaxItems, mp->extview.dwFlags,
676 mp->extview.hKey, debugstr_w(mp->extview.lpszSubKey),
677 mp->extview.lpfnCompare, err);
681 /* get values from key 'MRUList' */
683 datasize = (mp->extview.nMaxItems + 1) * sizeof(WCHAR);
684 if((err=RegQueryValueExW( newkey, strMRUList, 0, &type,
685 (LPBYTE)mp->realMRU, &datasize))) {
686 /* not present - set size to 1 (will become 0 later) */
691 datasize /= sizeof(WCHAR);
693 TRACE("MRU list = %s, datasize = %ld\n", debugstr_w(mp->realMRU), datasize);
695 mp->cursize = datasize - 1;
696 /* datasize now has number of items in the MRUList */
698 /* get actual values for each entry */
700 for(i=0; i<mp->cursize; i++) {
701 realname[0] = 'a' + i;
702 if(RegQueryValueExW( newkey, realname, 0, &type, 0, &datasize)) {
703 /* not present - what to do ??? */
704 ERR("Key %s not found 1\n", debugstr_w(realname));
706 mp->array[i] = witem = Alloc(datasize + sizeof(WINEMRUITEM));
707 witem->size = datasize;
708 if(RegQueryValueExW( newkey, realname, 0, &type,
709 &witem->datastart, &datasize)) {
710 /* not present - what to do ??? */
711 ERR("Key %s not found 2\n", debugstr_w(realname));
714 RegCloseKey( newkey );
719 TRACE("(%lu %lu %lx %p %s %p): Current Size = %ld\n",
720 mp->extview.cbSize, mp->extview.nMaxItems, mp->extview.dwFlags,
721 mp->extview.hKey, debugstr_w(mp->extview.lpszSubKey),
722 mp->extview.lpfnCompare, mp->cursize);
726 /**************************************************************************
727 * CreateMRUListLazyW [COMCTL32.404]
729 * See CreateMRUListLazyA.
731 HANDLE WINAPI CreateMRUListLazyW (LPCREATEMRULISTW lpcml, DWORD dwParam2,
732 DWORD dwParam3, DWORD dwParam4)
736 /* Native does not check for a NULL lpcml */
738 if (lpcml->cbSize != sizeof(CREATEMRULISTW) || !lpcml->hKey ||
739 IsBadStringPtrW(lpcml->lpszSubKey, -1))
742 mp = Alloc(sizeof(WINEMRULIST));
743 memcpy(&mp->extview, lpcml, sizeof(CREATEMRULISTW));
744 mp->extview.lpszSubKey = Alloc((strlenW(lpcml->lpszSubKey) + 1) * sizeof(WCHAR));
745 strcpyW((LPWSTR)mp->extview.lpszSubKey, lpcml->lpszSubKey);
746 mp->isUnicode = TRUE;
748 return CreateMRUListLazy_common(mp);
751 /**************************************************************************
752 * CreateMRUListLazyA [COMCTL32.157]
754 * Creates a most-recently-used list.
757 * lpcml [I] ptr to CREATEMRULIST structure.
758 * dwParam2 [I] Unknown
759 * dwParam3 [I] Unknown
760 * dwParam4 [I] Unknown
763 * Handle to MRU list.
765 HANDLE WINAPI CreateMRUListLazyA (LPCREATEMRULISTA lpcml, DWORD dwParam2,
766 DWORD dwParam3, DWORD dwParam4)
771 /* Native does not check for a NULL lpcml */
773 if (lpcml->cbSize != sizeof(CREATEMRULISTA) || !lpcml->hKey ||
774 IsBadStringPtrA(lpcml->lpszSubKey, -1))
777 mp = Alloc(sizeof(WINEMRULIST));
778 memcpy(&mp->extview, lpcml, sizeof(CREATEMRULISTW));
779 len = MultiByteToWideChar(CP_ACP, 0, lpcml->lpszSubKey, -1, NULL, 0);
780 mp->extview.lpszSubKey = Alloc(len * sizeof(WCHAR));
781 MultiByteToWideChar(CP_ACP, 0, lpcml->lpszSubKey, -1,
782 (LPWSTR)mp->extview.lpszSubKey, len);
783 mp->isUnicode = FALSE;
784 return CreateMRUListLazy_common(mp);
787 /**************************************************************************
788 * CreateMRUListW [COMCTL32.400]
790 * See CreateMRUListA.
792 HANDLE WINAPI CreateMRUListW (LPCREATEMRULISTW lpcml)
794 return CreateMRUListLazyW(lpcml, 0, 0, 0);
797 /**************************************************************************
798 * CreateMRUListA [COMCTL32.151]
800 * Creates a most-recently-used list.
803 * lpcml [I] ptr to CREATEMRULIST structure.
806 * Handle to MRU list.
808 HANDLE WINAPI CreateMRUListA (LPCREATEMRULISTA lpcml)
810 return CreateMRUListLazyA (lpcml, 0, 0, 0);
814 /**************************************************************************
815 * EnumMRUListW [COMCTL32.403]
817 * Enumerate item in a most-recenty-used list
820 * hList [I] list handle
821 * nItemPos [I] item position to enumerate
822 * lpBuffer [O] buffer to receive item
823 * nBufferSize [I] size of buffer
826 * For binary lists specifies how many bytes were copied to buffer, for
827 * string lists specifies full length of string. Enumerating past the end
828 * of list returns -1.
829 * If lpBuffer == NULL or nItemPos is -ve return value is no. of items in
832 INT WINAPI EnumMRUListW (HANDLE hList, INT nItemPos, LPVOID lpBuffer,
835 LPWINEMRULIST mp = (LPWINEMRULIST) hList;
837 INT desired, datasize;
839 if (nItemPos >= mp->cursize) return -1;
840 if ((nItemPos < 0) || !lpBuffer) return mp->cursize;
841 desired = mp->realMRU[nItemPos];
843 TRACE("nItemPos=%d, desired=%d\n", nItemPos, desired);
844 witem = mp->array[desired];
845 datasize = min( witem->size, nBufferSize );
846 memcpy( lpBuffer, &witem->datastart, datasize);
847 TRACE("(%p, %d, %p, %ld): returning len=%d\n",
848 hList, nItemPos, lpBuffer, nBufferSize, datasize);
852 /**************************************************************************
853 * EnumMRUListA [COMCTL32.154]
857 INT WINAPI EnumMRUListA (HANDLE hList, INT nItemPos, LPVOID lpBuffer,
860 LPWINEMRULIST mp = (LPWINEMRULIST) hList;
862 INT desired, datasize;
865 if (nItemPos >= mp->cursize) return -1;
866 if ((nItemPos < 0) || !lpBuffer) return mp->cursize;
867 desired = mp->realMRU[nItemPos];
869 TRACE("nItemPos=%d, desired=%d\n", nItemPos, desired);
870 witem = mp->array[desired];
871 if(mp->extview.dwFlags & MRUF_BINARY_LIST) {
872 datasize = min( witem->size, nBufferSize );
873 memcpy( lpBuffer, &witem->datastart, datasize);
875 lenA = WideCharToMultiByte(CP_ACP, 0, (LPWSTR)&witem->datastart, -1,
876 NULL, 0, NULL, NULL);
877 datasize = min( witem->size, nBufferSize );
878 WideCharToMultiByte(CP_ACP, 0, (LPWSTR)&witem->datastart, -1,
879 lpBuffer, datasize, NULL, NULL);
881 TRACE("(%p, %d, %p, %ld): returning len=%d\n",
882 hList, nItemPos, lpBuffer, nBufferSize, datasize);
887 /**************************************************************************
888 * Str_GetPtrA [COMCTL32.233]
890 * Copies a string into a destination buffer.
893 * lpSrc [I] Source string
894 * lpDest [O] Destination buffer
895 * nMaxLen [I] Size of buffer in characters
898 * The number of characters copied.
900 INT WINAPI Str_GetPtrA (LPCSTR lpSrc, LPSTR lpDest, INT nMaxLen)
904 TRACE("(%p %p %d)\n", lpSrc, lpDest, nMaxLen);
906 if (!lpDest && lpSrc)
907 return strlen (lpSrc);
917 len = strlen (lpSrc);
921 RtlMoveMemory (lpDest, lpSrc, len);
928 /**************************************************************************
929 * Str_SetPtrA [COMCTL32.234]
931 * Makes a copy of a string, allocating memory if necessary.
934 * lppDest [O] Pointer to destination string
935 * lpSrc [I] Source string
942 * Set lpSrc to NULL to free the memory allocated by a previous call
945 BOOL WINAPI Str_SetPtrA (LPSTR *lppDest, LPCSTR lpSrc)
947 TRACE("(%p %p)\n", lppDest, lpSrc);
950 LPSTR ptr = ReAlloc (*lppDest, strlen (lpSrc) + 1);
967 /**************************************************************************
968 * Str_GetPtrW [COMCTL32.235]
972 INT WINAPI Str_GetPtrW (LPCWSTR lpSrc, LPWSTR lpDest, INT nMaxLen)
976 TRACE("(%p %p %d)\n", lpSrc, lpDest, nMaxLen);
978 if (!lpDest && lpSrc)
979 return strlenW (lpSrc);
989 len = strlenW (lpSrc);
993 RtlMoveMemory (lpDest, lpSrc, len*sizeof(WCHAR));
1000 /**************************************************************************
1001 * Str_SetPtrW [COMCTL32.236]
1005 BOOL WINAPI Str_SetPtrW (LPWSTR *lppDest, LPCWSTR lpSrc)
1007 TRACE("(%p %p)\n", lppDest, lpSrc);
1010 INT len = strlenW (lpSrc) + 1;
1011 LPWSTR ptr = ReAlloc (*lppDest, len * sizeof(WCHAR));
1014 strcpyW (ptr, lpSrc);
1028 /**************************************************************************
1029 * Str_GetPtrWtoA [internal]
1031 * Converts a unicode string into a multi byte string
1034 * lpSrc [I] Pointer to the unicode source string
1035 * lpDest [O] Pointer to caller supplied storage for the multi byte string
1036 * nMaxLen [I] Size, in bytes, of the destination buffer
1039 * Length, in bytes, of the converted string.
1042 INT Str_GetPtrWtoA (LPCWSTR lpSrc, LPSTR lpDest, INT nMaxLen)
1046 TRACE("(%s %p %d)\n", debugstr_w(lpSrc), lpDest, nMaxLen);
1048 if (!lpDest && lpSrc)
1049 return WideCharToMultiByte(CP_ACP, 0, lpSrc, -1, 0, 0, NULL, NULL);
1054 if (lpSrc == NULL) {
1059 len = WideCharToMultiByte(CP_ACP, 0, lpSrc, -1, 0, 0, NULL, NULL);
1063 WideCharToMultiByte(CP_ACP, 0, lpSrc, -1, lpDest, len, NULL, NULL);
1070 /**************************************************************************
1071 * Str_SetPtrAtoW [internal]
1073 * Converts a multi byte string to a unicode string.
1074 * If the pointer to the destination buffer is NULL a buffer is allocated.
1075 * If the destination buffer is too small to keep the converted multi byte
1076 * string the destination buffer is reallocated. If the source pointer is
1077 * NULL, the destination buffer is freed.
1080 * lppDest [I/O] pointer to a pointer to the destination buffer
1081 * lpSrc [I] pointer to a multi byte string
1084 * TRUE: conversion successful
1087 BOOL Str_SetPtrAtoW (LPWSTR *lppDest, LPCSTR lpSrc)
1089 TRACE("(%p %s)\n", lppDest, lpSrc);
1092 INT len = MultiByteToWideChar(CP_ACP,0,lpSrc,-1,NULL,0);
1093 LPWSTR ptr = ReAlloc (*lppDest, len*sizeof(WCHAR));
1097 MultiByteToWideChar(CP_ACP,0,lpSrc,-1,ptr,len);
1111 /**************************************************************************
1112 * Notification functions
1115 typedef struct tagNOTIFYDATA
1123 } NOTIFYDATA, *LPNOTIFYDATA;
1126 /**************************************************************************
1127 * DoNotify [Internal]
1130 static LRESULT DoNotify (LPNOTIFYDATA lpNotify, UINT uCode, LPNMHDR lpHdr)
1133 LPNMHDR lpNmh = NULL;
1136 TRACE("(%p %p %d %p 0x%08lx)\n",
1137 lpNotify->hwndFrom, lpNotify->hwndTo, uCode, lpHdr,
1138 lpNotify->dwParam5);
1140 if (!lpNotify->hwndTo)
1143 if (lpNotify->hwndFrom == (HWND)-1) {
1145 idFrom = lpHdr->idFrom;
1148 if (lpNotify->hwndFrom)
1149 idFrom = GetDlgCtrlID (lpNotify->hwndFrom);
1151 lpNmh = (lpHdr) ? lpHdr : &nmhdr;
1153 lpNmh->hwndFrom = lpNotify->hwndFrom;
1154 lpNmh->idFrom = idFrom;
1155 lpNmh->code = uCode;
1158 return SendMessageW (lpNotify->hwndTo, WM_NOTIFY, idFrom, (LPARAM)lpNmh);
1162 /**************************************************************************
1163 * SendNotify [COMCTL32.341]
1165 * Sends a WM_NOTIFY message to the specified window.
1168 * hwndTo [I] Window to receive the message
1169 * hwndFrom [I] Window that the message is from (see notes)
1170 * uCode [I] Notification code
1171 * lpHdr [I] The NMHDR and any additional information to send or NULL
1174 * Success: return value from notification
1178 * If hwndFrom is -1 then the identifier of the control sending the
1179 * message is taken from the NMHDR structure.
1180 * If hwndFrom is not -1 then lpHdr can be NULL.
1182 LRESULT WINAPI SendNotify (HWND hwndTo, HWND hwndFrom, UINT uCode, LPNMHDR lpHdr)
1186 TRACE("(%p %p %d %p)\n",
1187 hwndTo, hwndFrom, uCode, lpHdr);
1189 notify.hwndFrom = hwndFrom;
1190 notify.hwndTo = hwndTo;
1191 notify.dwParam5 = 0;
1192 notify.dwParam6 = 0;
1194 return DoNotify (¬ify, uCode, lpHdr);
1198 /**************************************************************************
1199 * SendNotifyEx [COMCTL32.342]
1201 * Sends a WM_NOTIFY message to the specified window.
1204 * hwndFrom [I] Window to receive the message
1205 * hwndTo [I] Window that the message is from
1206 * uCode [I] Notification code
1207 * lpHdr [I] The NMHDR and any additional information to send or NULL
1208 * dwParam5 [I] Unknown
1211 * Success: return value from notification
1215 * If hwndFrom is -1 then the identifier of the control sending the
1216 * message is taken from the NMHDR structure.
1217 * If hwndFrom is not -1 then lpHdr can be NULL.
1219 LRESULT WINAPI SendNotifyEx (HWND hwndTo, HWND hwndFrom, UINT uCode,
1220 LPNMHDR lpHdr, DWORD dwParam5)
1225 TRACE("(%p %p %d %p 0x%08lx)\n",
1226 hwndFrom, hwndTo, uCode, lpHdr, dwParam5);
1228 hwndNotify = hwndTo;
1230 if (IsWindow (hwndFrom)) {
1231 hwndNotify = GetParent (hwndFrom);
1237 notify.hwndFrom = hwndFrom;
1238 notify.hwndTo = hwndNotify;
1239 notify.dwParam5 = dwParam5;
1240 notify.dwParam6 = 0;
1242 return DoNotify (¬ify, uCode, lpHdr);