dlls/comcat/factory.c

   1 /*
   2  *      ClassFactory implementation for comcat.dll
   3  *
   4  * Copyright (C) 2002 John K. Hohm
   5  *
   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.
  10  *
  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.
  15  *
  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "comcat_private.h"
  22
  23 #include "wine/debug.h"
  24
  25 WINE_DEFAULT_DEBUG_CHANNEL(ole);
  26
  27 static ULONG WINAPI COMCAT_IClassFactory_AddRef(LPCLASSFACTORY iface);
  28
  29 /**********************************************************************
  30  * COMCAT_IClassFactory_QueryInterface (also IUnknown)
  31  */
  32 static HRESULT WINAPI COMCAT_IClassFactory_QueryInterface(
  33     LPCLASSFACTORY iface,
  34     REFIID riid,
  35     LPVOID *ppvObj)
  36 {
  37     ClassFactoryImpl *This = (ClassFactoryImpl *)iface;
  38     TRACE("\n\tIID:\t%s\n",debugstr_guid(riid));
  39
  40     if (This == NULL || ppvObj == NULL) return E_POINTER;
  41
  42     if (IsEqualGUID(riid, &IID_IUnknown) ||
  43         IsEqualGUID(riid, &IID_IClassFactory))
  44     {
  45         *ppvObj = (LPVOID)iface;
  46         COMCAT_IClassFactory_AddRef(iface);
  47         return S_OK;
  48     }
  49
  50     return E_NOINTERFACE;
  51 }
  52
  53 /**********************************************************************
  54  * COMCAT_IClassFactory_AddRef (also IUnknown)
  55  */
  56 static ULONG WINAPI COMCAT_IClassFactory_AddRef(LPCLASSFACTORY iface)
  57 {
  58     ClassFactoryImpl *This = (ClassFactoryImpl *)iface;
  59     TRACE("\n");
  60
  61     if (This == NULL) return E_POINTER;
  62
  63     if (InterlockedIncrement(&This->ref) == 1) {
  64         InterlockedIncrement(&dll_ref);
  65     }
  66     return This->ref;
  67 }
  68
  69 /**********************************************************************
  70  * COMCAT_IClassFactory_Release (also IUnknown)
  71  */
  72 static ULONG WINAPI COMCAT_IClassFactory_Release(LPCLASSFACTORY iface)
  73 {
  74     ClassFactoryImpl *This = (ClassFactoryImpl *)iface;
  75     TRACE("\n");
  76
  77     if (This == NULL) return E_POINTER;
  78
  79     if (InterlockedDecrement(&This->ref) == 0) {
  80         InterlockedDecrement(&dll_ref);
  81     }
  82     return This->ref;
  83 }
  84
  85 /**********************************************************************
  86  * COMCAT_IClassFactory_CreateInstance
  87  */
  88 static HRESULT WINAPI COMCAT_IClassFactory_CreateInstance(
  89     LPCLASSFACTORY iface,
  90     LPUNKNOWN pUnkOuter,
  91     REFIID riid,
  92     LPVOID *ppvObj)
  93 {
  94     ClassFactoryImpl *This = (ClassFactoryImpl *)iface;
  95     HRESULT res;
  96     TRACE("\n\tIID:\t%s\n",debugstr_guid(riid));
  97
  98     if (This == NULL || ppvObj == NULL) return E_POINTER;
  99
 100     /* Don't support aggregation (Windows doesn't) */
 101     if (pUnkOuter != NULL) return CLASS_E_NOAGGREGATION;
 102
 103     res = IUnknown_QueryInterface((LPUNKNOWN)&COMCAT_ComCatMgr, riid, ppvObj);
 104     if (SUCCEEDED(res)) {
 105         return res;
 106     }
 107
 108     return CLASS_E_CLASSNOTAVAILABLE;
 109 }
 110
 111 /**********************************************************************
 112  * COMCAT_IClassFactory_LockServer
 113  */
 114 static HRESULT WINAPI COMCAT_IClassFactory_LockServer(
 115     LPCLASSFACTORY iface,
 116     BOOL fLock)
 117 {
 118     TRACE("\n");
 119
 120     if (fLock != FALSE) {
 121         IClassFactory_AddRef(iface);
 122     } else {
 123         IClassFactory_Release(iface);
 124     }
 125     return S_OK;
 126 }
 127
 128 /**********************************************************************
 129  * IClassFactory_Vtbl
 130  */
 131 static IClassFactoryVtbl IClassFactory_Vtbl =
 132 {
 133     COMCAT_IClassFactory_QueryInterface,
 134     COMCAT_IClassFactory_AddRef,
 135     COMCAT_IClassFactory_Release,
 136     COMCAT_IClassFactory_CreateInstance,
 137     COMCAT_IClassFactory_LockServer
 138 };
 139
 140 /**********************************************************************
 141  * static ClassFactory instance
 142  */
 143 ClassFactoryImpl COMCAT_ClassFactory = { &IClassFactory_Vtbl, 0 };