2 * IParseDisplayName implementation for DEVENUM.dll
4 * Copyright (C) 2002 Robert Shearman
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
21 * - Implements IParseDisplayName interface which creates a moniker
22 * from a string in a special format
24 #include "devenum_private.h"
26 #include "wine/debug.h"
28 WINE_DEFAULT_DEBUG_CHANNEL(devenum);
30 static HRESULT WINAPI DEVENUM_IParseDisplayName_QueryInterface(IParseDisplayName *iface,
31 REFIID riid, void **ppv)
33 TRACE("\n\tIID:\t%s\n",debugstr_guid(riid));
38 if (IsEqualGUID(riid, &IID_IUnknown) ||
39 IsEqualGUID(riid, &IID_IParseDisplayName))
42 IParseDisplayName_AddRef(iface);
46 FIXME("- no interface IID: %s\n", debugstr_guid(riid));
51 static ULONG WINAPI DEVENUM_IParseDisplayName_AddRef(IParseDisplayName *iface)
57 return 2; /* non-heap based object */
60 static ULONG WINAPI DEVENUM_IParseDisplayName_Release(IParseDisplayName *iface)
64 DEVENUM_UnlockModule();
66 return 1; /* non-heap based object */
69 /**********************************************************************
70 * DEVENUM_IParseDisplayName_ParseDisplayName
72 * Creates a moniker referenced to by the display string argument
75 * Might not handle more complicated strings properly (ie anything
76 * not in "@device:sw:{CLSID1}\<filter name or CLSID>" format
78 static HRESULT WINAPI DEVENUM_IParseDisplayName_ParseDisplayName(IParseDisplayName *iface,
79 IBindCtx *pbc, LPOLESTR pszDisplayName, ULONG *pchEaten, IMoniker **ppmkOut)
81 LPOLESTR pszBetween = NULL;
82 LPOLESTR pszClass = NULL;
83 MediaCatMoniker * pMoniker = NULL;
86 WCHAR wszRegKeyName[MAX_PATH];
89 static const WCHAR wszRegSeparator[] = {'\\', 0 };
91 TRACE("(%p, %s, %p, %p)\n", pbc, debugstr_w(pszDisplayName), pchEaten, ppmkOut);
95 *pchEaten = strlenW(pszDisplayName);
97 pszDisplayName = strchrW(pszDisplayName, '{');
98 pszBetween = strchrW(pszDisplayName, '}') + 2;
100 /* size = pszBetween - pszDisplayName - 1 (for '\\' after CLSID)
101 * + 1 (for NULL character)
103 classlen = (int)(pszBetween - pszDisplayName - 1);
104 pszClass = CoTaskMemAlloc((classlen + 1) * sizeof(WCHAR));
106 return E_OUTOFMEMORY;
108 memcpy(pszClass, pszDisplayName, classlen * sizeof(WCHAR));
109 pszClass[classlen] = 0;
111 TRACE("Device CLSID: %s\n", debugstr_w(pszClass));
113 res = CLSIDFromString(pszClass, &clsidDevice);
117 res = DEVENUM_GetCategoryKey(&clsidDevice, &hbasekey, wszRegKeyName, MAX_PATH);
122 pMoniker = DEVENUM_IMediaCatMoniker_Construct();
125 strcatW(wszRegKeyName, wszRegSeparator);
126 strcatW(wszRegKeyName, pszBetween);
128 if (RegCreateKeyW(hbasekey, wszRegKeyName, &pMoniker->hkey) == ERROR_SUCCESS)
129 *ppmkOut = &pMoniker->IMoniker_iface;
132 IMoniker_Release(&pMoniker->IMoniker_iface);
138 CoTaskMemFree(pszClass);
140 TRACE("-- returning: %x\n", res);
144 /**********************************************************************
145 * IParseDisplayName_Vtbl
147 static const IParseDisplayNameVtbl IParseDisplayName_Vtbl =
149 DEVENUM_IParseDisplayName_QueryInterface,
150 DEVENUM_IParseDisplayName_AddRef,
151 DEVENUM_IParseDisplayName_Release,
152 DEVENUM_IParseDisplayName_ParseDisplayName
155 /* The one instance of this class */
156 IParseDisplayName DEVENUM_ParseDisplayName = { &IParseDisplayName_Vtbl };