2 * IParent implementation
4 * Copyright (c) 2006 Stefan Dösinger
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
20 * A universal parent interface for everything in WineD3D that doesn't have
25 #include "wine/port.h"
26 #include "wine/debug.h"
40 #include "wine/exception.h"
46 #include "ddraw_private.h"
48 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
50 const GUID IID_IParent = {0xc20e4c88, 0x74e7, 0x4940, {0xba, 0x9f, 0x2e, 0x32, 0x3f, 0x9d, 0xc9, 0x81}};
52 /*****************************************************************************
54 *****************************************************************************/
56 /*****************************************************************************
57 * IParent::Queryinterface
59 * It can't query any interfaces, and it's not used for anything. So
60 * it just returns E_NOINTERFACE
63 * riid: guid of queried interface
64 * obj: returns a pointer to the interface
67 * This implementation always returns E_NOINTERFACE and NULL
69 *****************************************************************************/
71 IParentImpl_QueryInterface(IParent *iface,
75 ICOM_THIS_FROM(IParentImpl, IParent, iface);
76 TRACE("(%p)->(%s,%p)\n", This, debugstr_guid(riid), obj);
79 if ( IsEqualGUID( &IID_IUnknown, riid ) ||
80 IsEqualGUID( &IID_IParent, riid ) )
82 *obj = ICOM_INTERFACE(This, IParent);
83 IParent_AddRef(ICOM_INTERFACE(This, IParent));
89 /*****************************************************************************
92 * Increases the refcount
99 *****************************************************************************/
101 IParentImpl_AddRef(IParent *iface)
103 ICOM_THIS_FROM(IParentImpl, IParent, iface);
104 ULONG ref = InterlockedIncrement(&This->ref);
106 TRACE("(%p) : AddRef from %d\n", This, ref - 1);
112 /*****************************************************************************
115 * Releases the refcount, and destroys the object if the refcount falls to 0
116 * Also releases the child object, if destroyed. That's almost the whole sense
124 *****************************************************************************/
126 IParentImpl_Release(IParent *iface)
128 ICOM_THIS_FROM(IParentImpl, IParent, iface);
129 ULONG ref = InterlockedDecrement(&This->ref);
131 TRACE("(%p) : ReleaseRef to %d\n", This, ref);
135 TRACE("(%p) Releasing child at %p\n", This, This->child);
137 IUnknown_Release(This->child);
138 HeapFree(GetProcessHeap(), 0, This);
144 /*****************************************************************************
146 *****************************************************************************/
147 const IParentVtbl IParent_Vtbl =
149 IParentImpl_QueryInterface,