comctl32undoc.c

来自「一个类似windows」· C语言 代码 · 共 1,246 行 · 第 1/3 页

 */
INT WINAPI EnumMRUListW (HANDLE hList, INT nItemPos, LPVOID lpBuffer,
                         DWORD nBufferSize)
{
    LPWINEMRULIST mp = (LPWINEMRULIST) hList;
    LPWINEMRUITEM witem;
    INT desired, datasize;

    if (nItemPos >= mp->cursize) return -1;
    if ((nItemPos < 0) || !lpBuffer) return mp->cursize;
    desired = mp->realMRU[nItemPos];
    desired -= 'a';
    TRACE("nItemPos=%d, desired=%d\n", nItemPos, desired);
    witem = mp->array[desired];
    datasize = min( witem->size, nBufferSize );
    memcpy( lpBuffer, &witem->datastart, datasize);
    TRACE("(%p, %d, %p, %ld): returning len=%d\n",
	  hList, nItemPos, lpBuffer, nBufferSize, datasize);
    return datasize;
}

/**************************************************************************
 *                EnumMRUListA [COMCTL32.154]
 *
 * See EnumMRUListW.
 */
INT WINAPI EnumMRUListA (HANDLE hList, INT nItemPos, LPVOID lpBuffer,
                         DWORD nBufferSize)
{
    LPWINEMRULIST mp = (LPWINEMRULIST) hList;
    LPWINEMRUITEM witem;
    INT desired, datasize;
    DWORD lenA;

    if (nItemPos >= mp->cursize) return -1;
    if ((nItemPos < 0) || !lpBuffer) return mp->cursize;
    desired = mp->realMRU[nItemPos];
    desired -= 'a';
    TRACE("nItemPos=%d, desired=%d\n", nItemPos, desired);
    witem = mp->array[desired];
    if(mp->extview.dwFlags & MRUF_BINARY_LIST) {
        datasize = min( witem->size, nBufferSize );
	memcpy( lpBuffer, &witem->datastart, datasize);
    } else {
        lenA = WideCharToMultiByte(CP_ACP, 0, (LPWSTR)&witem->datastart, -1,
				   NULL, 0, NULL, NULL);
	datasize = min( witem->size, nBufferSize );
	WideCharToMultiByte(CP_ACP, 0, (LPWSTR)&witem->datastart, -1,
			    lpBuffer, datasize, NULL, NULL);
    }
    TRACE("(%p, %d, %p, %ld): returning len=%d\n",
	  hList, nItemPos, lpBuffer, nBufferSize, datasize);
    return datasize;
}


/**************************************************************************
 * Str_GetPtrA [COMCTL32.233]
 *
 * Copies a string into a destination buffer.
 *
 * PARAMS
 *     lpSrc   [I] Source string
 *     lpDest  [O] Destination buffer
 *     nMaxLen [I] Size of buffer in characters
 *
 * RETURNS
 *     The number of characters copied.
 */
INT WINAPI Str_GetPtrA (LPCSTR lpSrc, LPSTR lpDest, INT nMaxLen)
{
    INT len;

    TRACE("(%p %p %d)\n", lpSrc, lpDest, nMaxLen);

    if (!lpDest && lpSrc)
	return strlen (lpSrc);

    if (nMaxLen == 0)
	return 0;

    if (lpSrc == NULL) {
	lpDest[0] = '\0';
	return 0;
    }

    len = strlen (lpSrc);
    if (len >= nMaxLen)
	len = nMaxLen - 1;

    RtlMoveMemory (lpDest, lpSrc, len);
    lpDest[len] = '\0';

    return len;
}


/**************************************************************************
 * Str_SetPtrA [COMCTL32.234]
 *
 * Makes a copy of a string, allocating memory if necessary.
 *
 * PARAMS
 *     lppDest [O] Pointer to destination string
 *     lpSrc   [I] Source string
 *
 * RETURNS
 *     Success: TRUE
 *     Failure: FALSE
 *
 * NOTES
 *     Set lpSrc to NULL to free the memory allocated by a previous call
 *     to this function.
 */
BOOL WINAPI Str_SetPtrA (LPSTR *lppDest, LPCSTR lpSrc)
{
    TRACE("(%p %p)\n", lppDest, lpSrc);

    if (lpSrc) {
	LPSTR ptr = ReAlloc (*lppDest, strlen (lpSrc) + 1);
	if (!ptr)
	    return FALSE;
	strcpy (ptr, lpSrc);
	*lppDest = ptr;
    }
    else {
	if (*lppDest) {
	    Free (*lppDest);
	    *lppDest = NULL;
	}
    }

    return TRUE;
}


/**************************************************************************
 * Str_GetPtrW [COMCTL32.235]
 *
 * See Str_GetPtrA.
 */
INT WINAPI Str_GetPtrW (LPCWSTR lpSrc, LPWSTR lpDest, INT nMaxLen)
{
    INT len;

    TRACE("(%p %p %d)\n", lpSrc, lpDest, nMaxLen);

    if (!lpDest && lpSrc)
	return strlenW (lpSrc);

    if (nMaxLen == 0)
	return 0;

    if (lpSrc == NULL) {
	lpDest[0] = L'\0';
	return 0;
    }

    len = strlenW (lpSrc);
    if (len >= nMaxLen)
	len = nMaxLen - 1;

    RtlMoveMemory (lpDest, lpSrc, len*sizeof(WCHAR));
    lpDest[len] = L'\0';

    return len;
}


/**************************************************************************
 * Str_SetPtrW [COMCTL32.236]
 *
 * See Str_SetPtrA.
 */
BOOL WINAPI Str_SetPtrW (LPWSTR *lppDest, LPCWSTR lpSrc)
{
    TRACE("(%p %p)\n", lppDest, lpSrc);

    if (lpSrc) {
	INT len = strlenW (lpSrc) + 1;
	LPWSTR ptr = ReAlloc (*lppDest, len * sizeof(WCHAR));
	if (!ptr)
	    return FALSE;
	strcpyW (ptr, lpSrc);
	*lppDest = ptr;
    }
    else {
	if (*lppDest) {
	    Free (*lppDest);
	    *lppDest = NULL;
	}
    }

    return TRUE;
}


/**************************************************************************
 * Str_GetPtrWtoA [internal]
 *
 * Converts a unicode string into a multi byte string
 *
 * PARAMS
 *     lpSrc   [I] Pointer to the unicode source string
 *     lpDest  [O] Pointer to caller supplied storage for the multi byte string
 *     nMaxLen [I] Size, in bytes, of the destination buffer
 *
 * RETURNS
 *     Length, in bytes, of the converted string.
 */

INT Str_GetPtrWtoA (LPCWSTR lpSrc, LPSTR lpDest, INT nMaxLen)
{
    INT len;

    TRACE("(%s %p %d)\n", debugstr_w(lpSrc), lpDest, nMaxLen);

    if (!lpDest && lpSrc)
	return WideCharToMultiByte(CP_ACP, 0, lpSrc, -1, 0, 0, NULL, NULL);

    if (nMaxLen == 0)
	return 0;

    if (lpSrc == NULL) {
	lpDest[0] = '\0';
	return 0;
    }

    len = WideCharToMultiByte(CP_ACP, 0, lpSrc, -1, 0, 0, NULL, NULL);
    if (len >= nMaxLen)
	len = nMaxLen - 1;

    WideCharToMultiByte(CP_ACP, 0, lpSrc, -1, lpDest, len, NULL, NULL);
    lpDest[len] = '\0';

    return len;
}


/**************************************************************************
 * Str_SetPtrAtoW [internal]
 *
 * Converts a multi byte string to a unicode string.
 * If the pointer to the destination buffer is NULL a buffer is allocated.
 * If the destination buffer is too small to keep the converted multi byte
 * string the destination buffer is reallocated. If the source pointer is
 * NULL, the destination buffer is freed.
 *
 * PARAMS
 *     lppDest [I/O] pointer to a pointer to the destination buffer
 *     lpSrc   [I] pointer to a multi byte string
 *
 * RETURNS
 *     TRUE: conversion successful
 *     FALSE: error
 */
BOOL Str_SetPtrAtoW (LPWSTR *lppDest, LPCSTR lpSrc)
{
    TRACE("(%p %s)\n", lppDest, lpSrc);

    if (lpSrc) {
	INT len = MultiByteToWideChar(CP_ACP,0,lpSrc,-1,NULL,0);
	LPWSTR ptr = ReAlloc (*lppDest, len*sizeof(WCHAR));

	if (!ptr)
	    return FALSE;
	MultiByteToWideChar(CP_ACP,0,lpSrc,-1,ptr,len);
	*lppDest = ptr;
    }
    else {
	if (*lppDest) {
	    Free (*lppDest);
	    *lppDest = NULL;
	}
    }

    return TRUE;
}


/**************************************************************************
 * Notification functions
 */

typedef struct tagNOTIFYDATA
{
    HWND hwndFrom;
    HWND hwndTo;
    DWORD  dwParam3;
    DWORD  dwParam4;
    DWORD  dwParam5;
    DWORD  dwParam6;
} NOTIFYDATA, *LPNOTIFYDATA;


/**************************************************************************
 * DoNotify [Internal]
 */

static LRESULT DoNotify (LPNOTIFYDATA lpNotify, UINT uCode, LPNMHDR lpHdr)
{
    NMHDR nmhdr;
    LPNMHDR lpNmh = NULL;
    UINT idFrom = 0;

    TRACE("(%p %p %d %p 0x%08lx)\n",
	   lpNotify->hwndFrom, lpNotify->hwndTo, uCode, lpHdr,
	   lpNotify->dwParam5);

    if (!lpNotify->hwndTo)
	return 0;

    if (lpNotify->hwndFrom == (HWND)-1) {
	lpNmh = lpHdr;
	idFrom = lpHdr->idFrom;
    }
    else {
	if (lpNotify->hwndFrom)
	    idFrom = GetDlgCtrlID (lpNotify->hwndFrom);

	lpNmh = (lpHdr) ? lpHdr : &nmhdr;

	lpNmh->hwndFrom = lpNotify->hwndFrom;
	lpNmh->idFrom = idFrom;
	lpNmh->code = uCode;
    }

    return SendMessageW (lpNotify->hwndTo, WM_NOTIFY, idFrom, (LPARAM)lpNmh);
}


/**************************************************************************
 * SendNotify [COMCTL32.341]
 *
 * Sends a WM_NOTIFY message to the specified window.
 *
 * PARAMS
 *     hwndTo   [I] Window to receive the message
 *     hwndFrom [I] Window that the message is from (see notes)
 *     uCode    [I] Notification code
 *     lpHdr    [I] The NMHDR and any additional information to send or NULL
 *
 * RETURNS
 *     Success: return value from notification
 *     Failure: 0
 *
 * NOTES
 *     If hwndFrom is -1 then the identifier of the control sending the
 *     message is taken from the NMHDR structure.
 *     If hwndFrom is not -1 then lpHdr can be NULL.
 */
LRESULT WINAPI SendNotify (HWND hwndTo, HWND hwndFrom, UINT uCode, LPNMHDR lpHdr)
{
    NOTIFYDATA notify;

    TRACE("(%p %p %d %p)\n",
	   hwndTo, hwndFrom, uCode, lpHdr);

    notify.hwndFrom = hwndFrom;
    notify.hwndTo   = hwndTo;
    notify.dwParam5 = 0;
    notify.dwParam6 = 0;

    return DoNotify (&notify, uCode, lpHdr);
}


/**************************************************************************
 * SendNotifyEx [COMCTL32.342]
 *
 * Sends a WM_NOTIFY message to the specified window.
 *
 * PARAMS
 *     hwndFrom [I] Window to receive the message
 *     hwndTo   [I] Window that the message is from
 *     uCode    [I] Notification code
 *     lpHdr    [I] The NMHDR and any additional information to send or NULL
 *     dwParam5 [I] Unknown
 *
 * RETURNS
 *     Success: return value from notification
 *     Failure: 0
 *
 * NOTES
 *     If hwndFrom is -1 then the identifier of the control sending the
 *     message is taken from the NMHDR structure.
 *     If hwndFrom is not -1 then lpHdr can be NULL.
 */
LRESULT WINAPI SendNotifyEx (HWND hwndTo, HWND hwndFrom, UINT uCode,
                             LPNMHDR lpHdr, DWORD dwParam5)
{
    NOTIFYDATA notify;
    HWND hwndNotify;

    TRACE("(%p %p %d %p 0x%08lx)\n",
	   hwndFrom, hwndTo, uCode, lpHdr, dwParam5);

    hwndNotify = hwndTo;
    if (!hwndTo) {
	if (IsWindow (hwndFrom)) {
	    hwndNotify = GetParent (hwndFrom);
	    if (!hwndNotify)
		return 0;
	}
    }

    notify.hwndFrom = hwndFrom;
    notify.hwndTo   = hwndNotify;
    notify.dwParam5 = dwParam5;
    notify.dwParam6 = 0;

    return DoNotify (&notify, uCode, lpHdr);
}