dlls/devenum/factory.c

   1 /*
   2  *      ClassFactory implementation for DEVENUM.dll
   3  *
   4  * Copyright (C) 2002 John K. Hohm
   5  * Copyright (C) 2002 Robert Shearman
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "devenum_private.h"
  23
  24 #include "wine/debug.h"
  25
  26 WINE_DEFAULT_DEBUG_CHANNEL(devenum);
  27
  28 /**********************************************************************
  29  * DEVENUM_IClassFactory_QueryInterface (also IUnknown)
  30  */
  31 static HRESULT WINAPI DEVENUM_IClassFactory_QueryInterface(
  32     LPCLASSFACTORY iface,
  33     REFIID riid,
  34     LPVOID *ppvObj)
  35 {
  36     ClassFactoryImpl *This = (ClassFactoryImpl *)iface;
  37     TRACE("\n\tIID:\t%s\n",debugstr_guid(riid));
  38
  39     if (This == NULL || ppvObj == NULL) return E_POINTER;
  40
  41     if (IsEqualGUID(riid, &IID_IUnknown) ||
  42         IsEqualGUID(riid, &IID_IClassFactory))
  43     {
  44         *ppvObj = (LPVOID)iface;
  45         IClassFactory_AddRef(iface);
  46         return S_OK;
  47     }
  48     else if (IsEqualGUID(riid, &IID_IParseDisplayName))
  49     {
  50         return IClassFactory_CreateInstance(iface, NULL, riid, ppvObj);
  51     }
  52
  53     FIXME("- no interface\n\tIID:\t%s\n", debugstr_guid(riid));
  54     return E_NOINTERFACE;
  55 }
  56
  57 /**********************************************************************
  58  * DEVENUM_IClassFactory_AddRef (also IUnknown)
  59  */
  60 static ULONG WINAPI DEVENUM_IClassFactory_AddRef(LPCLASSFACTORY iface)
  61 {
  62     ClassFactoryImpl *This = (ClassFactoryImpl *)iface;
  63     TRACE("\n");
  64
  65     if (This == NULL) return E_POINTER;
  66
  67     This->ref++;
  68
  69     if (InterlockedIncrement(&This->ref) == 1) {
  70         InterlockedIncrement(&dll_ref);
  71     }
  72     return This->ref;
  73 }
  74
  75 /**********************************************************************
  76  * DEVENUM_IClassFactory_Release (also IUnknown)
  77  */
  78 static ULONG WINAPI DEVENUM_IClassFactory_Release(LPCLASSFACTORY iface)
  79 {
  80     ClassFactoryImpl *This = (ClassFactoryImpl *)iface;
  81     TRACE("\n");
  82
  83     if (This == NULL) return E_POINTER;
  84
  85     if (InterlockedDecrement(&This->ref) == 0) {
  86         InterlockedDecrement(&dll_ref);
  87     }
  88     return This->ref;
  89 }
  90
  91 /**********************************************************************
  92  * DEVENUM_IClassFactory_CreateInstance
  93  */
  94 static HRESULT WINAPI DEVENUM_IClassFactory_CreateInstance(
  95     LPCLASSFACTORY iface,
  96     LPUNKNOWN pUnkOuter,
  97     REFIID riid,
  98     LPVOID *ppvObj)
  99 {
 100     ClassFactoryImpl *This = (ClassFactoryImpl *)iface;
 101     TRACE("\n\tIID:\t%s\n",debugstr_guid(riid));
 102
 103     if (This == NULL || ppvObj == NULL) return E_POINTER;
 104
 105     /* Don't support aggregation (Windows doesn't) */
 106     if (pUnkOuter != NULL) return CLASS_E_NOAGGREGATION;
 107
 108     if (IsEqualGUID(&IID_ICreateDevEnum, riid))
 109     {
 110         *ppvObj = &DEVENUM_CreateDevEnum;
 111         return S_OK;
 112     }
 113     if (IsEqualGUID(&IID_IParseDisplayName, riid))
 114     {
 115         *ppvObj = &DEVENUM_ParseDisplayName;
 116         return S_OK;
 117     }
 118
 119     return CLASS_E_CLASSNOTAVAILABLE;
 120 }
 121
 122 /**********************************************************************
 123  * DEVENUM_IClassFactory_LockServer
 124  */
 125 static HRESULT WINAPI DEVENUM_IClassFactory_LockServer(
 126     LPCLASSFACTORY iface,
 127     BOOL fLock)
 128 {
 129     TRACE("\n");
 130
 131     if (fLock != FALSE) {
 132         IClassFactory_AddRef(iface);
 133     } else {
 134         IClassFactory_Release(iface);
 135     }
 136     return S_OK;
 137 }
 138
 139 /**********************************************************************
 140  * IClassFactory_Vtbl
 141  */
 142 static IClassFactoryVtbl IClassFactory_Vtbl =
 143 {
 144     DEVENUM_IClassFactory_QueryInterface,
 145     DEVENUM_IClassFactory_AddRef,
 146     DEVENUM_IClassFactory_Release,
 147     DEVENUM_IClassFactory_CreateInstance,
 148     DEVENUM_IClassFactory_LockServer
 149 };
 150
 151 /**********************************************************************
 152  * static ClassFactory instance
 153  */
 154 ClassFactoryImpl DEVENUM_ClassFactory = { &IClassFactory_Vtbl, 0 };